Power Management

DA9223-XXFT1BB-A

Dialog Semiconductor

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter

Manufacturer: Dialog Semiconductor

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PDF pages: 60

Technical content

Datasheet sections

1 Terms and Definitions
2 Pinout
3 Absolute Maximum Ratings
4 Recommended Operating Conditions
5 Electrical Characteristics
6 Efficiency Measurements
7 Functional Description
7.1 DC-DC Buck Converter
7.1.1 Switching Frequency
7.1.2 Operation Modes and Phase Selection
7.1.3 Output Voltage Selection
7.1.4 Soft Start Up
7.1.5 Current Limit
7.2 Ports Description
7.2.1 VDDIO
7.2.2 IC_EN
7.2.4 GPIO Extender
7.3 Operating Modes
7.3.1 ON Mode
7.3.2 OFF Mode
7.4 Control Interfaces
7.4.3 Details of the 2-WIRE Control Bus Protocol
7.5 Internal Temperature Supervision
8 Register Definitions
8.1 Register Map
8.2 Register Definitions
8.2.1 Register Page Control
8.2.2 Register Page
8.2.3 Register Page
8.2.4 Register Page
8.2.5 Register Page
9 Application Information
9.1 Capacitor Selection
9.2 Inductor Selection
10 Package Information

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 1 of 60 © 2021 Dialog Semiconductor General Description DA9223-A and DA9224-A are PMICs optimized for the supply of CPUs, GPUs, and DDR memory rails in automotive in-vehicle infotainment systems, Advanced Driver Assistance Systems (ADAS), navigation and telematics applications. The fast transient response (10 A/µs) and load regulation are optimized for the latest generation of multi core application processors. DA9223-A operates as a single four-phase buck converter delivering up to 16 A output current. DA9224-A integrates two dual-phase buck converters, capable of delivering 2 x 8 A output current. Each buck regulates a programmable output voltage in the range of 0.3 V to 1.57 V. With an external resistor divider the output voltage can be set to any voltage between 1.57 V and 4.3 V. The input voltage range of 2.8 V to 5.5 V makes it suited for a wide variety of low voltage systems, including all Li-Ion battery powered applications. To guarantee the highest accuracy and to support multiple PCB routing scenarios without loss of performance, a remote sensing capability is implemented in both the DA9223-A and DA9224-A. The power devices are fully integrated, so no external FETs or Schottky diodes are needed. A programmable soft start-up can be enabled, which limits the inrush current from the input node and secures a slope controlled activation of the rail. The Dynamic Voltage Control (DVC) supports adaptive adjustment of the supply voltage depending on the processor load, either via direct register writes through the communication interface (I 2C or SPI compatible) or via an input pin. DA9223-A and DA9224-A feature integrated over-temperature and over-current protection for increased system reliability without the need for external sensing components. The safety feature set is completed by a VDDIO under voltage lockout. The configurable I2C address selection via GPI allows multiple instances of DA9223-A and DA9224- A to be placed in an application sharing the same communication interface with different addresses. Key Features ■ 2.8 V to 5.5 V input voltage ■ 1 x 16 A DA9223-A ■ 2 x 8 A DA9224-A ■ 3 MHz nominal switching frequency (allows use of low profile [1 mm] inductors) ■ ±1 % accuracy (static) ■ ±3 % accuracy (dynamic) ■ 0.3 V to 1.57 V output voltage 1.57 V to 4.3 V with resistor divider ■ Dynamic Voltage Control (DVC) ■ Automatic phase shedding ■ Integrated power switches ■ Remote sensing at point of load ■ I2C/SPI compatible interface ■ Adjustable soft start ■ -40 °C to +105 ºC temperature range ■ AEC-Q100 grade 2 qualified ■ 66 TFBGA 0.8 mm pitch

Applications

■ In-car infotainment ■ Automotive display clusters ■ Advanced Driver Assistance Systems (ADAS) ■ Navigation and telematics ■ Mobile computing ■ Industrial embedded systems

1 Terms and Definitions

CPU Central Processing Unit DDR Dual Data Rate DVC Dynamic Voltage Control FET Field Effect Transistor GPI General Purpose Input GPU Graphic Processing Unit IC Integrated Circuit OTP One Time Programmable memory PCB Printed Circuit Board PMIC Power Management Integrated Circuit POL Point Of Load PWM Pulse Width Modulation

2 Pinout

Figure 3: 66 TFBGA 0.8 mm Pitch Ball Map 1 2 3 4 5 6 7 8 9 10 11 A VDD_A1 VDD_A1 VDD_A1 VDD_A1 SDA/ SI SCL/ SK GPI0/ TRK VDD_B1 VDD_B1 VDD_B1 VDD_B1 A DA9223-A/24-A B LX_A1 LX_A1 LX_A1 LX_A1 GPIO2 FBAP GPI1/ CLK_IN LX_B1 LX_B1 LX_B1 LX_B1 B High Power Signals C VSS_A1 VSS_A1 VSS_A1 VSS_A1 VDDCORE FBAN SO/ GPIO3 VSS_B1 VSS_B1 VSS_B1 VSS_B1 C High Power Noisy Signals Power Signals D VSS_A2 VSS_A2 VSS_A2 VSS_A2 nCS/ GPI4 FBBP/ NC nIRQ VSS_B2 VSS_B2 VSS_B2 VSS_B2 D Noisy Digital Signals Quasi Static Digital Signals E LX_A2 LX_A2 LX_A2 LX_A2 VSS FBBN/ NC VDDIO LX_B2 LX_B2 LX_B2 LX_B2 E Sensitive Analog Signals F VDD_A2 VDD_A2 VDD_A2 VDD_A2 VSS_ANA VSYS IC_EN VDD_B2 VDD_B2 VDD_B2 VDD_B2 F 1 2 3 4 5 6 7 8 9 10 11 66 balls see balls through package

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 7 of 60 © 2021 Dialog Semiconductor Table 1: Pin Description Pin Name Signal Name Second Function Type (See Table 2) Description B1, B2, B3, B4 LX_A1 AO Switching node for Buck A phase 1 E1, E2, E3, E4 LX_A2 AO Switching node for Buck A phase 2 B8, B9, B10, B11 LX_B1 AO Switching node for Buck B phase 1 E8, E9, E10, E11 LX_B2 AO Switching node for Buck B phase 2 A1, A2, A3, A4 VDD_A1 PS Supply voltage for Buck A phase 1 To be connected to VSYS F1, F2, F3, F4 VDD_A2 PS Supply voltage for Buck A phase 2 To be connected to VSYS A8, A9, A10, A11 VDD_B1 PS Supply voltage for Buck B phase 1 To be connected to VSYS F8, F9, F10, F11 VDD_B2 PS Supply voltage for Buck B phase 2 To be connected to VSYS F7 IC_EN DI Integrated Circuit (IC) Enable Signal D7 nIRQ DO Interrupt line towards the host E7 VDDIO PS I/O Voltage Rail B6 FBAP AI Positive sense node for Buck A C6 FBAN AI Negative sense node for Buck A FBBP AI Positive sense node for Buck B of DA9224-A NC AO Do not connect for DA9223-A FBBN AI Negative sense node for Buck B of DA9224-A NC AO Do not connect for DA9223-A A7 GPI0 TRK DI/AI General purpose input, input track B7 GPI1 DI General purpose input B5 GPIO2 DIO General purpose input/output A5 SDA SI DIO 2-WIRE data, 4-WIRE data input/output A6 SCL SK DI 2-WIRE clock, 4-WIRE clock D5 nCS GPI4 DI 4-WIRE chip select, general purpose input C7 SO GPIO3 DIO 4-WIRE data output, general purpose input/output C5 VDDCORE AO Regulated supply for internal circuitry. Decouple with 150 nF (or 220 nF) F6 VSYS PS Supply for IC and input for voltage supervision E5 VSS VSS F5 VSS_ANA VSS

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 8 of 60 © 2021 Dialog Semiconductor Pin Name Signal Name Second Function Type (See Table 2) Description C1, C2, C3, C4, D1, D2, D3, D4, C8, C9, C10, C11, D8, D9, D10, D11 VSS_A1, VSS_A2 VSS_B1 VSS_B2 VSS Connect together Table 2: Pin Type Definition Pin Type Description Pin Type Description DI Digital Input AI Analogue Input DO Digital Output AO Analogue Output DIO Digital Input/Output AIO Analogue Input/Output PS Power Supply VSS Ground

3 Absolute Maximum Ratings

Table 3: Absolute Maximum Ratings Parameter Description Conditions (Note 1) Min Typ Max Unit TSTG Storage temperature -65 +150 °C TJ Junction temperature -40 +150 °C VDD_LIM Limiting supply voltage -0.3 6.0 V VPIN Limiting voltage at all pins except above -0.3 VDD + 0.3 (max 6.0) V VESD_HBM Electrostatic discharge voltage Human Body Model 2 kV Note 1 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, so functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specification are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

4 Recommended Operating Conditions

Table 4: Recommended Operating Conditions Parameter Description Conditions (Note 1) Min Typ Max Unit VDD Supply voltage 2.8 5.5 V TJ_OP Operating junction temperature -40 125 °C TA Ambient temperature -40 105 °C VDDIO Input/output supply voltage 1.2 3.6 (Note 2) V PTOT Total power dissipation (Note 3) TFBGA 0.8 mm pitch Derating factor above TA = 70 °C: 29.3 mW/°C 1620 mW JA Thermal resistance junction to ambient (Note 3) TFBGA 0.8 mm pitch 34.2 °C/W Note 1 Within the specified limits, a lifetime of 10 years is guaranteed. If operating outside of these recommended conditions, please consult with Dialog Semiconductor. Note 2 VDDIO is not allowed to be higher than VDD. Note 3 Obtained from measurement on a 6-layer evaluation board. Influenced by PCB technology and layout.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 10 of 60 © 2021 Dialog Semiconductor Figure 4: 66 TFBGA 0.8 mm Pitch Power Derating Curve 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 20 30 40 50 60 70 80 90 100 110 120 130 140 PD (W) TA (°C) PD = (TJ - TA) / θJA θJA = 34.2 °C/W Still air (0 m/s) ▲TJ(WARN) = 125 °C ◆TJ(CRIT) = 140 °C

5 Electrical Characteristics

Unless otherwise noted, the following is valid for TJ = -40 to +125 ºC, VDD = 2.8 V to 5.5 V, COUT = 47 μF per phase, local sensing. Table 5: Buck Converters Characteristics Parameter Description Conditions Min Typ Max Unit External Component Electrical Conditions COUT Output capacitance (per phase) Including voltage and temperature coefficient 23 47 62 µF ESRCOUT Equivalent series resistance (per phase) f > 100 kHz 10 mΩ LPHASE Inductance (per phase) Including current and temperature dependence 0.11 0.22 0.29 µH DCRLPHASE Inductor resistance 100 mΩ

Electrical Characteristics

VDD Supply voltage VDD_x = VSYS 2.8 5.5 V VBUCK Buck output voltage (Note 1) IO = 0 to IO_MAX 0.3 1.57 V VOACC Output voltage accuracy PWM mode Incl. static line/load reg and voltage ripple VBUCK ≥ 1 V -2.0 +2.0 % Incl. static line/load reg and voltage ripple VBUCK < 1 V ±20 mV VBUCK = 1 V VDD = 3.8 V no load -1.0 +1.0 % VBUCK = 1 V VDD = 3.8 V no load TA = 27 ºC -0.5 +0.5 % VTR_LOAD Load regulation transient voltage (Note 2) DA9223-A IO = 0 to 5 A, tr = 500 ns PWM 4-phase VBUCK ≥ 1 V VBUCK < 1 V ±20 mV DA9223-A IO = 0 to 5 A, tr = 500 ns auto mode, ph shedding VBUCK = 1 V ±3.5 Load regulation transient voltage (Note 2) DA9224-A IO = 0 to 5 A, tr = 500 ns PWM 2-phase VBUCK = 1 V ±3.5 % VTR_LINE Line regulation transient voltage VDD = 3 to.3.6 V dt =10 µs IO = IO(MAX)/2 15 mV IO_MAX Maximum output current Per phase 4000 mA

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 12 of 60 © 2021 Dialog Semiconductor Parameter Description Conditions Min Typ Max Unit ILIM_MIN Minimum current limit per phase (programmable) (Note 3) BUCKA_ILIM BUCKB_ILIM = 0000 -20% 4000 20% mA ILIM_MAX Maximum current limit per phase (programmable) (Note 3) BUCKA_ILIM BUCKB_ILIM = 1111 -20% 7000 20% mA IQ_PWM Quiescent current synchronous rectification mode Per phase No load VDD = 3.7 V 17 mA fSW Switching frequency 3 MHz tSTUP Startup time VOUT = 1.0 V BUCKA_UP_CTRL BUCKB_UP_CTRL = 100 (Note 4) µs RO_PD Output pull-down resistance For each phase at the LX node at 0.5 V, (see BUCKx_PD_DIS) 150 200 Ω RON_PMOS PMOS on-resistance Incl. pin and routing VDD = 3.7 V per phase 29 mΩ RON_NMOS NMOS on-resistance Incl. pin and routing VDD = 3.7 V per phase 21 mΩ PFM Mode VBUCK_PFM Buck output voltage in PFM IO = 0 mA to IO_MAX 0.3 1.57 V IMIN_PFM Minimum output current in PFM Static output voltage, no DVC 2 mA IQ_PFM_A2 DA9224-A quiescent current Buck A enabled No switching VDD = 3.7 V (Note 5) 58 µA IQ_PFM_A4 DA9223-A quiescent current Buck enabled No switching VDD = 3.7 V (Note 5) 72 µA IQ_PFM_A2B2 DA9224-A quiescent current Buck A enabled Buck B enabled No switching VDD = 3.7 V (Note 5) 106 µA Note 1 Programmable in 10 mV increments. Note 2 Additional to the dc accuracy. Inductor value 0.22 uH. The value is measured directly at COUT(EXT). In case of remote sensing, parasitics of PCB and external components may affect this value. Note 3 On-time > 50 ns.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 13 of 60 © 2021 Dialog Semiconductor Note 4 Time from beginning to end of the voltage ramp. Additional 10 µs typical delay, plus internal sync to the enable port. Note 5 For the total quiescent current of the IC, the IDD_ON should be added. Table 6: IC Performance and Supervision Parameter Description Conditions Min Typ Max Unit IDD_OFF Off state supply current IC_EN = 0 TA = 27 °C 0.1 1 µA IDD_ON On state supply current IC_EN = 1 Buck A/B off TA = 27 °C 14 µA VTH_PG Power good threshold voltage referred to VBUCK -50 mV VHYS_PG Power good hysteresis voltage 50 mV VTH_UVLO_VDD Under voltage lockout threshold at VDD BUCK_EN = 0 2.0 V BUCK_EN = 1 2.55 V VTH_UVLO_IO Under voltage lockout threshold at VDDIO 1.315 1.45 1.55 V VHYS_UVLO_IO Under voltage lockout hysteresis at VDDIO 70 mV TTH_WARN Thermal warning threshold temperature 110 125 140 °C TTH_CRIT Thermal critical threshold temperature 125 140 155 ºC TTH_POR Thermal power on reset threshold temperature 135 150 165 °C fOSC Internal oscillator frequency -7% 6.0 +7% MHz

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 14 of 60 © 2021 Dialog Semiconductor Table 7: Digital I/O Characteristics Parameter Description Conditions Min Typ Max Unit VIH_EN HIGH level input voltage at pin IC_EN 1.1 V VIL_EN LOW level input voltage at pin IC_EN 0.35 V tEN Enable time I/F operating 750 µs RO_PU_GPO Pull up resistor at GPO VDDIO = 1.8 V VGPO = 0 V 100 k RI_PD_GPI Pull down resistor at GPI VDDIO = 1.8 V VGPI = VDDIO 150 k VIH GPI0-4, SCL, SDA, (2-WIRE mode) HIGH level input voltage VDDCORE mode VDDIO mode 1.75 0.7*VDDIO V VIL GPI0-4, SCL, SDA, (2-WIRE mode) LOW level input voltage VDDCORE mode VDDIO mode 0.75 0.3*VDDIO V VIH_4WIRE SK, nCS, SI (4-WIRE Mode) HIGH level input voltage 0.7*VDDIO V VIL_4WIRE SK, nCS, SI (4-WIRE Mode) LOW level input voltage 0.3*VDDIO V VOH GPO2-3, SO (4-WIRE mode) HIGH level output voltage push-pull mode at 1 mA VDDIO ≥ 1.5 V 0.8*VDDIO V VOL1 GPO2-3, SDA (2-WIRE mode) SO (4-WIRE mode) LOW level output voltage at IOL = 1 mA 0.3 V VOL3 SDA (2-WIRE Mode) LOW level output voltage at IOL = 3 mA 0.24 V VOL20 SDA (2-WIRE Mode) LOW level output voltage at IOL = 20 mA 0.4 V CIN CLK, SDA (2-WIRE Mode) input capacitance 2.5 10 pF tSP CLK, SDA (2-WIRE Mode) spike suppression pulse width Fast/Fast+ mode High Speed mode 0 50 10 ns tfDA Fall time of SDA signal (2-WIRE Mode) Fast at CB < 550 pF HS at 10 < CB <100 pF HS at CB < 400 pF 20+0.1 CB 120 160 ns

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 15 of 60 © 2021 Dialog Semiconductor Table 8: 2-WIRE Control Bus Characteristics Parameter Description Conditions Min Typ Max Unit tBUF Bus free time from STOP to START condition 0.5 µs CB Bus line capacitive load 150 pF Standard/Fast/Fast+ Mode fSCL Clock frequency at pin SCL 0 (Note 1) 1000 kHz tSU_STA START condition set- up time 0.26 µs tH_STA START condition hold time 0.26 µs tW_CL Clock LOW duration 0.5 µs tW_CH Clock HIGH duration 0.26 µs tR Rise time at pin CLK and DATA Input requirement 1000 ns tF Fall time at pin CLK and DATA Input requirement 300 ns tSU_D Data set-up time 50 ns tH_D Data hold time 0 ns High Speed Mode fSCL_HS Clock frequency at pin SCL 0 (Note 1) 3400 kHz tSU_STA_HS START condition set- up time 160 ns tH_STA_HS START condition hold time 160 ns tW_CL_HS Clock LOW duration 160 ns tW_CH_HS Clock HIGH duration 60 ns tR_HS Rise time at pin CLK and DATA Input requirement 160 ns tF_HS Fall time at pin CLK and DATA Input requirement 160 ns tSU_D_HS Data set-up time 10 ns tH_D_HS Data hold time 0 ns tSU_STO_HS STOP condition set- up time 160 ns Note 1 Minimum clock frequency is 10 kHz if 2WIRE_TO is enabled.

6 Efficiency Measurements

The efficiency measurements for DA9223-A and DA9224-A (in TFBGA 0.8 mm pitch package) are shown with phase shedding enabled in each plot and were measured using 2520 size inductor with typ. 8 mΩ DCR. Figure 7: DA9223-A Efficiency vs Load, VOUT = 1.0 V, 0-16 A Figure 8: DA9223-A Efficiency vs Load, VIN = 3.6 V, 0-16 A

7 Functional Description

Flexible configurability and the availability of different control schemes make both DA9223-A and DA9224-A the ideal single/dual buck companion ICs to expand the existing capabilities of a system PMIC such as DA9063. Due to the advanced compatibility between both DA9223-A and DA9224-A and the DA9063, they offer several advantages when they are operated together. These advantages include:

DA9223-A and DA9224-A can be enabled and controlled by DA9063 during the power up sequence, thanks to DA9063’s dedicated output signals during power-up, and compatible input controls in both DA9223-A and DA9224-A.
DA9223-A and DA9224-A can be used in a completely transparent way for the host processor and can share the same Control Interface (same SPI chip select or I2C address), thanks to the compatible registers map. DA9223-A and DA9224-A have a dedicated register space for configuration and control which doesn’t conflict with DA9063.
DA9223-A and DA9224-A support a power-good configurable port for enhanced communication to the host processor and improved power-up sequencing.
DA9223-A and DA9224-A can both share the same interrupt line with DA9063. In addition, the 2-WIRE / 4-WIRE interfaces allow DA9223-A and DA9224-A to fit to many standard PMU parts and power applications. DA9063 Host Processor nIRQ nONKEY nRESET Vdd VCharger nSHUTDOWN GPIOs OUT_32K Control IF DA9223-A/ DA9224-A Control IF GPIO9 nIRQ PWR1_EN nOFF LID GPI0 (enable) IC_EN PWR_EN SYS_EN GPI1 (voltage set) Figure 11: Interface of DA9223-A/24-A with DA9063 and the Host Processor As shown in Figure 11, a typical application case includes a host processor, a main PMIC (for example, DA9063) and DA9223-A or DA9224-A used as companion IC for the high power core supply. The easiest way of controlling DA9223-A and DA9224-A is through the Control Interface. The master initiating the communication must always be the host processor that reads and writes to the main PMIC, and to the DA9223-A and DA9224-A registers. To poll the status of DA9223-A or DA9224-A, the host processor must access the dedicated register area through the Control Interface. DA9223-A and DA9224-A can additionally be controlled by means of hardware inputs.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 21 of 60 © 2021 Dialog Semiconductor VDD_A1 VSYS VSS_ANA VIN LX_A1 FBAP FBAN FBBP FBBN SENSE+ SENSE- DA9224-A CPU/ GPU DDR CORE EN_A (GPI0) EN_B (GPI1) nIRQ SCL SDA VDDIO SENSE+ SENSE- I2C_ADDR_SEL (GPI4) VDDIO IC_EN VSYS VDD_A2 VDD_B1 VDD_B2 LX_A2 LX_B1 LX_B2 (LX_A3 in DA9215) Figure 13: Typical Application of DA9224-A Figure 13 shows a typical use case of DA9224-A for the simultaneous supply of a CPU and a GPU rail. The IC is always enabled because IC_EN is shorted to the battery voltage. The CORE application processor enables and disables the CPU/GPU and the DDR individually via dedicated ports on DA9224-A.

7.1 DC-DC Buck Converter

DA9223-A is a four-phase 16 A high efficiency synchronous step-down DVC regulator, operating at a high frequency of typically 3 MHz. It supplies an output voltage of typically 1.0 V for a CPU rail, configurable in the range 0.3 – 1.57 V, with high accuracy in steps of 10 mV. DA9224-A contains two buck converters, Buck A and Buck B, each capable of delivering 8 A. To improve the accuracy of the delivered voltage, each buck converter can support a differential se nsing of the configured voltage directly at the point of load via dedicated positive and negative sense pins. Both Buck A and Buck B have two voltage registers each. One defines the normal output voltage , while the other offers an alternative retention voltage. In this way different application power modes can easily be supported. The voltage selection can be operated either via GPI or via control interface to guarantee the maximum flexibility according to the specific host processor status in the application.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 22 of 60 © 2021 Dialog Semiconductor When a buck is enabled, its output voltage is monitored and a power-good signal indicates that the buck output voltage has reached a level higher than the VTH(PG) threshold. The power-good is lost when the voltage drops below VTH(PG) - VHYS(PG), which is the level at which the signal is de- asserted. The power good signaling should not be used in conjunction with fast start up rates, configured in BUCKx_UP_CTRL register fields and can be individually masked during DVC transitions using the PGA_DVC_MASK and PGB_DVC_MASK bits. For each of the buck converters the status of the power-good indicator can be read back via I2C from the PWRGOOD_A and PWRGOOD_B status bits. It can be also individually assigned to either GPIO2 or GPIO3 using BUCKA_PG_SEL and BUCKB_PG_SEL. For correct functionality, the GPIO ports need to be configured as output. An I2C write in GPIOx_MODE can overwrite the internal configuration so that a new update will be automatically done only when the internal power-good indicator changes status. The buck converters are capable of supporting DVC transitions that occur:

When they are active and the selected A-voltage or B-voltage is updated to a new target value.
When the voltage selection is changed from the A-voltage to the B-voltage (or B-voltage to the A-voltage) using VBUCKA_SEL and VBUCKB_SEL. The DVC controller operates in Pulse Width Modulation (PWM) mode with synchronous rectification. When the host processor changes the output voltage, the voltage transition of each buck conve rter can be individually signaled with a READY signal routed to either GPIO2 or GPIO3. The port has to be configured as GPO and selected for the functionality via READYA_CONF or READYB_CONF. In contrast to the power-good signal, the READY only informs the host processor about the completion of the digital DVC ramp without confirming that the target voltage has actually been reached. The slew rate of the DVC transition is individually programmed for each buck c onverter at 10mV per (4, 2, 1 or 0.5 µs) via control bit SLEW_RATE_A and SLEW_RATE_B. The typical supply current in PWM mode is in the order of 17 mA per phase (quiescent current and charge/discharge current) and drops to <1 µA when the buck is turned off. When the buck is disabled, a pull-down resistor (typically 150 Ω) for each phase is activated depending on the value stored in register bits BUCKA_PD_DIS and BUCKB_PD_DIS. Phases disabled using PHASE_SEL_A and PHASE_SEL_B will not have any pull-down. The pull-down resistor is always disabled at all phases when DA9223-A and DA9224-A are OFF.

7.1.1 Switching Frequency

The switching frequency is chosen to be high enough to allow the use of a small 0.22 µH inductor (see a complete list of coils in the Application Information, Section 9). The buck switching frequency can be tuned using register bit OSC_TUNE. The internal 6 MHz oscillator frequency is tuned in steps of 180 kHz. This impacts the buck converter frequency in steps of 90 kHz and helps to mitigate possible disturbances to other HF systems in the application.

7.1.2 Operation Modes and Phase Selection

The buck converters can operate in synchronous PWM mode and PFM mode. The operating mode is selected using register bits BUCKA_MODE and BUCKB_MODE. An automatic phase shedding can be enabled for each buck converter in PWM mode via EF PH_SH_EN_A \\h \\* MERGEFORMAT PH_SH_EN_A, PH_SH_EN_B, thereby automatically reducing or increasing the number of active phases depending on the output load current. For DA9224-A the phase shedding will automatically change between 1-phase and 2-phase operation at a typical current of 2.0 A. For DA9223-A the phase shedding will automatically change between 1- phase and 4-phase operation at a typical current of 2.5 A. The PHASE_SEL_A and PHASE_SEL_B register fields limit the maximum number of active phases under any conditions. If the automatic operation mode is selected on BUCKA_MODE or BUCKB_MODE, the buck converters will automatically change between synchronous PWM mode and PFM depending on the load current. This improves the efficiency of the converters across the whole range of output load currents.

7.1.3 Output Voltage Selection

The switching converter can be configured using either a 2-WIRE or a 4-WIRE interface. For security reasons, the re-programming of registers that can cause damage when wrongly programmed (for example, the voltage settings) can be disabled by asserting the control V_LOCK. When V_LOCK is asserted, reprogramming the registers 0xD0 to 0x14F from control interfaces is disabled. For each buck converter two output voltages can be pre-configured inside registers VBUCKA_A and VBUCKB_A, and registers VBUCKA_B and VBUCKB_B. The output voltage can be selected by either toggling register bits VBUCKA_SEL and VBUCKB_SEL or by re-programming the selected voltage control register. Both changes will result in ramped voltage transitions, during which the READY signal is asserted. After being enabled, the buck converter will by default use the register settings in VBUCKA_A and VBUCKB_A unless the output voltage selection is configured via the GPI port. If “00” has been selected in BUCKA_MODE or BUCKB_MODE, A-/B- voltage selection registers VBUCKx_x control the operation of the PWM and PFM modes. Regardless of the values programmed in the VBUCKx_A and VBUCKx_B registers, the registers VBUCKA_MAX, VBUCKB_MAX will individually limit the maximum output voltage that can be set for each of the buck converters. The buck converter provides an optional hardware enable/disable via selectable GPI, and configured via control register bits BUCKA_GPI and BUCKB_GPI. A change of the output voltage controlled by the state of a GPI is enabled via control register bits VBUCKA_GPI and VBUCKB_GPI. A rising or falling edge at the related GPI, DA9223-A and DA9224-A will configure the buck converters according to the status of the GPI. In addition to selecting between the A/B voltages, a track mode can be activated for Buck A to set the output voltage. In the DA9223-A, the track mode is applied to the 4-phase buck converter. This feature can be enabled on GPI0 via GPI0_PIN. The output voltage will be configured to follow the voltage applied at a selected GPI pin. The voltage applied at GPI0 must be in the same range as the nominal output voltage selectable for the buck rail (see VBUCKA_A and VBUCKA_B registers). In Track Mode, only single ended remote sensing is possible. In Track Mode, the content of the VBUCKA_SEL bit is ignored, as well as VBUCKA_A and VBUCKA_B bits. They will become active again once the voltage track mode is disabled. The GPI0 does not generate any event in this case. Figure 14: Concept of Control of the Buck’s Output Voltage

7.1.4 Soft Start Up

To limit in-rush current from VSYS, the buck converters can perform a soft-start after being enabled. The start-up behavior is a compromise between acceptable inrush current from the battery and turn-on time. In DA9223-A and DA9224-A different ramp times can be individually configured for each buck converter on register BUCKA_UP_CTRL and BUCKB_UP_CTRL. Rates higher than 20 mV/µs may produce overshoot during the start-up phase, so they should be considered carefully. It is also recommended to place a decoupling capacitor on the feedback lines if slow ramp-up slew rate; slower than 2.5 mV/µs is used. A ramped power-down can be selected on register bits BUCKA_DOWN_CTRL and BUCKB_DOWN_CTRL. When no ramp is selected, the output node will only be discharged by the pull-down resistor, if enabled via BUCKA_PD_DIS and BUCKB_PD_DIS.

7.1.5 Current Limit

The integrated current limit is meant to protect DA9223-A and DA9224-A power stages and the external coil from excessive current. The bucks’ current limit should be configured to be at least 40% higher than the required maximum continuous output current. When reaching the current limit, each buck converter generates an event and an interrupt to the host processor unless the interrupt has been masked using the OCx_MASK controls. These OCA_MASK and OCB_MASK control bits can be used to mask the generation of over-current events during DVC transitions. An extra masking time as defined in OCx_MASK will be automatically added to the DVC interval after the DVC has finished in order to ensure that the possible high current levels needed for DVC do not influence the event generation. 7.1.6 Variable VOUT above 1.57 V The whole product family is also available with an adjustable output voltage up to 4.3V. A resistive divider from VOUT to FBAN (or FBBN) can be used to set the output voltage higher than 1.57 V, see Figure 15. The value of the output voltage VOUT is set by the selection of the resistive divider shown in equation 1. The total resistance of the divider resistors (R1+R2) should be less than 40 k. 𝑉𝑂𝑈𝑇 = (1+𝑅1 𝑅2)∙𝑉𝑅𝐸𝐹 Equation 1 Figure 15: Resistive Divider from VOUT to FBAN

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 25 of 60 © 2021 Dialog Semiconductor For example, to program the output voltage VOUT to 1.8 V, with VREF set to 1.2 V, suggest 10 kΩ on R1 and 20 kΩ on R2. Note 1 The resistors need to be properly selected since the output voltage accuracy will be directly affected by any errors on the resistors. The voltage across FBAP and FBAN (VREF) is guaranteed, but not the output voltage accuracy. Note 2 For best accuracy and tracking R1 = R2 and VREF is adjusted to be 1/2 x Vout. Note 3 Capacitor C1 is used to provide feed forward control to improve transient response. The value of C1 should be between 1 nF and 10 nF. CAUTION The followings are important notes that need to be considered before using resistive divider on DA9223-A and DA9224-A: 1. Please contact your region's Dialog representative when adopting the resistive divider technique. Dialog need to prepare a special OTP because incorrect OTP settings may result in a different output voltage than expected. 2. The voltage difference between input voltage and output voltage needs to be: above 1.2 V, VIN-VOUT > 1.2 V. 3. The total resistance (R1+R2) is less than 40 k. 4. It is recommended that the device is operated in PWM mode only.

7.2 Ports Description

This section describes the functionality of each input / output port.

7.2.1 VDDIO

VDDIO is an independent IO supply rail input to DA9223-A and DA9224-A that can be assigned to the power manager interface and to the GPIOs (see control PM_IF_V and GPI_V). The rail assignment determines the IO voltage levels and logical thresholds (see also the Digital I/O Characteristics in Table 7). An integrated under voltage lockout circuit for the VDDIO prevents internal errors by disabling the I 2C communication when the voltage drops below VULO_IO. In that case the buck converters are also disabled and cannot be re-enabled (even via input port) until the VDDIO under-voltage condition has been resolved. At the exit of the VDDIO under voltage condition an event E_UVLO_IO is generated and the nIRQ line is driven active if the event is not masked. The VDDIO under-voltage circuit monitors voltages relative to a nominal voltage of 1.8V. If a different rail voltage is being used, the under-voltage circuit can be disabled via UVLO_IO_DIS. Note that the maximum speed at 4-WIRE interface is only available if the selected supply rail is greater than 1.6 V.

7.2.2 IC_EN

IC_EN is a general enable signal for DA9223-A and DA9224-A turning on and off the internal circuitry (for example, the reference, the digital core, etc.). Correct control of this port has a direct impact on the quiescent current of the whole application. A low level of IC_EN allows the device to reach the minimum quiescent current. The voltage at this pin is continuously sensed by a dedicated analogue circuit. The host processor can begin to start communication with DA9223-A and DA9224-A through the Control Interface and, for example to turn on the buck converters, a delay time of t EN after assertion of the IC_EN pin. If the bucks are enabled via OTP (see BUCKA_EN and BUCKB_EN controls), they will start up automatically after assertion of IC_EN. The IC_EN activation threshold is defined with a built-in hysteresis to avoid glitching transitions that take place with unstable rising or falling edges. 7.2.3 nIRQ The nIRQ port indicates that an interrupt-causing event has occurred and that the event/status information is available in the related registers. The nIRQ is an output signal that can either be push-pull or open drain (selected via IRQ_TYPE). If an active high IRQ signal is required, it can be achieved by asserting control IRQ_LEVEL (recommended for push-pull mode). Examples of this type of information can be critical temperature and voltage, fault conditions, status changes at GPI ports, and so forth. The event registers hold information about the events that have occurred. Events are triggered by a status change at the monitored signals. When an event bit is set, the nIRQ signal is asserted unless this interrupt is masked by a bit in the IRQ mask register. The nIRQ will not be released until all event registers with asserted bits have been read and cleared. New events that occur during reading an event register are held until the event register has been cleared, ensuring that the host processor does not miss them.

7.2.4 GPIO Extender

DA9223-A and DA9224-A include a GPIO extender that offers up to five 5 V-tolerant general purpose input/output ports. Each port is controlled via registers from the host processor. The GPIO3 and GPI4 ports are pin-shared with the 4-WIRE Control Interface. For instance, if GPIO3_PIN = 01, GPI4_PIN = 01 (Interface selected), the GPIO3 and GPI4 ports will be exclusively dedicated to output and chip-select signaling for 4-WIRE purposes. If the alternative function is selected, all GPIOs configuration as per registers 0x58 to 0x5A and 0x145 will be ignored. GPIs are supplied from the internal rail VDDCORE or VDDIO (selected via GPI_V) and can be configured to be active high or active low (selected via GPIOx_TYPE). The input signals can be debounced or immediately change the state of the assigned status register GPIx to high or low, according to the setting of GPIOx_MODE. The debouncing time is configurable via control DEBOUNCE (10 ms default). Whenever the status has changed to its configured active state (edge sensitive), the assigned event register is set and the nIRQ signal is asserted (unless this nIRQ is masked, see also Figure 16). Whenever DA9223-A and DA9224-A is enabled and enters ON mode (also when enabled changing the setting of GPIOx_PIN) the GPI status bits are initiated towards their configured passive state. This ensures that already active signals are detected, and that they create an event immediately after the GPI comparators are enabled. The buck enable signal (BUCKx_EN) can be controlled directly via a GPI, if so configured in the BUCKA_GPI and BUCKB_GPI registers. If it is required that GPI ports do not generate an event when configured for the HW control of the switching regulator, the relative mask bit should be set. GPIs can alternatively be selected to toggle the VBUCKA_SEL and VBUCKB_SEL from rising and falling edges at these inputs. Apart from changing the regulator output voltage this also provides hardware control of the regulator mode (normal/low power mode) from the settings of BUCKA_SL_A, BUCKA_SL_B, BUCKB_SL_A, and BUCKB_SL_B (enabled if BUCKA_MODE or BUCKB_MODE = ‘00’). All GPI ports have the additional option of activating a 100 kΩ pull-down resistor via GPIOx_PUPD, which ensures a well-defined level in case the input is not actively driven. If enabled via ADDR_SEL_CONF, the I2C address selection can be assigned to a specific GPI. An active voltage level at the selected GPI configures the slave address of DA9223-A and DA9224-A to IF_BASE_ADDR1 while a passive voltage level configures the slave address to IF_BASE_ADDR2. If no GPI is selected then the IF_BASE_ADDR1 is automatically used. If defined as an output, GPIOs can be configured to be open-drain or push-pull. If configured as push-pull, the supply rail is VDDIO. By disabling the internal 120 kΩ pull-up resistor in open-drain mode, the GPO can also be supplied from an external rail. The output state will be assign ed as configured by the GPIO register bit GPIOx_MODE. A specific power-good port for each of the buck converters can be configured via BUCKA_PG_SEL and BUCKB_PG_SEL. The respective port must be configured as GPO for correct operation. If assigned to the same GPO, it is necessary that the power-good indicators for Buck A and Buck B are both active (supply voltages in range) to assert the overall power-good. The signal will be released as soon as one of the single power-good signals is not active (that is, at least one supply is out of range). The power good signaling should not be used in conjunction with fast start up rates, configured in BUCKx_UP_CTRL register fields. Once enabled via RELOAD_FUNC_EN the GPI0 can be used as input port to operate a partial OTP download. When the input level is changed to active, the registers 0x5D, 0x5E, 0xD1 to 0xDA are updated to their OTP default. This allows a complete buck re-configuration that resets all the changes done to those registers previously (soft reset). If the buck should be kept on during the soft reset, the OTP values for the enable bits should be asserted because they are also part of the re- load.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 28 of 60 © 2021 Dialog Semiconductor Whenever the GPIO unit is off (POR or OFF Mode) all ports are configured as open drain active high (pass device switched off, high impedance state). When leaving POR the pull-up or pull-down resistors will be configured from register GPIOx_PUPD. Input Reference Buffer GPI0_PIN Interrupt mask: M_GPI0 Rising or Falling edge GPI0_TYPE: Active high/low GPI0 Status register nIRQ E_GPI0 Event register Reset Event register write 150 kΩ ... NOR NOR GPI0_PUPD GPI Buck GPIO3_PIN Debounce GPI0_MODE: Debounce on/off Interrupt mask: M_GPI3 Rising or Falling edge GPIO3_TYPE: Active high/low GPI3 Status register E_GPI3 Event register Reset Event register write 150 kΩ VDD_IO 100 kΩ GPO (Open drain) GPO (Push-pull) GPO3_MODE: 0 or 1 NOR GPIO3_PUPD GPIO3_PUPD VDD_IO GPI Debounce GPIO3_MODE: Debounce on/off VDD_IO 4-WIRE SO READY signal asserted during DVC READY_EN Track Mode Interface Reserved Reserved Regulator configure BUCK_ EN VBUCK_SEL Figure 16: GPIO Principle of Operation (Example Paths)

7.3 Operating Modes

7.3.1 ON Mode

DA9223-A and DA9224-A are in ON Mode when the IC_EN port is higher than EN_ON and the supply voltage is higher than VTH(UVLO)(VDD). Once enabled, the host processor can start the communication with DA9223-A and DA9224-A via Control Interface after the tEN delay needed for internal circuit start up. If BUCKA_EN or BUCKB_EN is asserted when DA9223-A and DA9224-A are in ON Mode the power up of the related buck converter is initiated. If the bucks are controlled via GPI, t he level of the controlling ports is checked when entering ON mode, so that an active level will immediat ely have effect on the buck. If BUCKA_EN or BUCKB_EN are not asserted and all controlling GPI ports are inactive, the buck converter will stay off with the output pull-down resistor enabled/disabled according to the setting of BUCKA_PD_DIS and BUCKB_PD_DIS.

7.3.2 OFF Mode

DA9223-A and DA9224-A are in OFF Mode when the IC_EN port is lower than EN_OFF. In OFF Mode, the bucks are always disabled and the output pull-down resistors are disabled independently of BUCKA_PD_DIS and BUCKB_PD_DIS. All I/O ports of DA9223-A and DA9224-A are configured as high impedance.

7.4 Control Interfaces

All the features of DA9223-A and DA9224-A can be controlled by SW through a serial control interfaces. The communication is selectable to be either a 2-WIRE (I2C compliant) or a 4-WIRE connection (SPI compliant) via control IF_TYPE, which will be selected during the initial OTP read. If 4-WIRE is selected, the GPIO3 and GPI4 are automatically configured as interface pins. Data is shifted into or out of DA9223-A and DA9224-A under the control of the host processor, which also provides the serial clock. In a normal application case the interface is only configured once from OTP values, which are loaded during the initial start-up of DA9223-A and DA9224-A. DA9223-A and DA9224-A react only on read/write commands where the transmitted register address (using the actual page bits as a MSB address range extensions) is within 0x50 to 0x67, 0xD0 to DF, 0x140 to 0x14F and (read only) 0x200 to 0x27F. Host access to registers outside these ranges will be ignored. This means there will be no acknowledge after receiving the register address in 2-WIRE Mode, and SO stays HI-Z in 4-WIRE Mode. During debug and production modes write access is available to page 4 (0x200 to 0x27F). DA9223-A and DA9224-A react only on write commands where the transmitted register address is 0x00, 0x80, 0x100 to0x106. The host processor must read the content of those registers before writing, thereby changing only the bit fields that are not marked as reserved (the content of the read back comes from the compatible PMIC, for exampl e DA9063). If the STAND_ALONE bit is asserted (OTP bit), DA9223-A and DA9224-A also react to read commands. 7.4.1 4-WIRE Communication In 4-WIRE Mode the interface uses a chip-select line (nCS/nSS), a clock line (SK), data input (SI) and data output line (SO). The DA9223-A and DA9224-A register map is split into four pages that each contain up to 128 registers. The register at address zero on each page is used as a page control register. The default active page after turn-on includes registers 0x50 to 0x6F. Writing to the page control register changes the active page for all subsequent read/write operations unless an automatic return to page 0 was selected by asserting bit REVERT. Unless the REVERT bit was asserted after modifying the active page, it is recommended to read back the page control register to ensure that future data exchange is accessing the intended registers. All registers outside the DA9223-A and DA9224-A range are write only, that is, the DA9223-A and DA9224-A will not answer to a read command and the data bus is tri-state (they are implicitly directed to DA9063). In particular the information contained in registers 0x105 and 0x106 is used by

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 30 of 60 © 2021 Dialog Semiconductor DA9223-A and DA9224-A to configure the control interface. They must be the same as the main PMIC (DA9063), so that a write to those registers configures both the main PMIC and DA9223-A and DA9224-A at the same time. The default OTP settings also need to be identical for a correct operation of the system. The 4-WIRE interface features a half-duplex operation, that is, data can be transmitted and received within a single 16-bit frame at enhanced clock speed (up to 14 MHz). It operates at the clock frequencies provided by the host. PMIC (slave) Host processor SK SO SI nCS/nSS nCS/nSS SI SK SO nCS/nSS VDDIO VDDIO VDDIO Slave deviceSI SK SO nCS/nSS VDDIO4-WIRE interface Host processor PMIC Peripheral device SI SK Peripheral device SDA SCL SCL SDA VDDIO VDDIO 2-WIRE interface Figure 17: Schematic of 4-WIRE and 2-WIRE Power Manager Bus A transmission begins when initiated by the host. Reading and writing is accomplished by the use of an 8-bit command, which is sent by the host prior to the exchanged 8-bit data. The byte from the host begins shifting in on the SI pin under the control of the serial clock SK provided from the host. The first seven bits specify the register address (0x01 to 0x07) that will be written or read by the host. The register address is automatically decoded after receiving the seventh address bit. The command word ends with an R/W bit, which together with the control bit R/W_POL specifies the direction of the following data exchange. During register writing the host continues sending out data during the following eight SK clocks. For reading, the host stops transmitting and the 8-bit register is clocked out of DA9223-A and DA9224-A during the consecutive eight SK clocks of the frame. Address and data are transmitted with MSB first. The polarity (active state) of nCS is defined by control bit nCS_POL. nCS resets the interface when inactive and it has to be released between successive cycles. The SO output from DA9223-A and DA9224-A is normally in high-impedance state and active only during the second half of read cycles. A pull-up or pull-down resistor may be needed at the SO line if a floating logic signal can cause unintended current consumption inside other cir cuits. Table 10: 4-WIRE Clock Configurations Configurations CPHA Clock Polarity CPOL Clock Phase Output Data is Updated at SK Edge Input Data is Registered at SK Edge 0 (idle low) 0 Falling Rising 0 (idle low) 1 Rising Falling 1 (idle high) 0 Rising Falling 1 (idle high) 1 Falling Rising DA9223-A and DA9224-A’s 4-WIRE interface offers two further configuration bits. Clock polarity (CPOL) and clock phase (CPHA) define when the interface will latch the serial data bits. CPOL determines whether SK idles high (CPOL = 1) or low (CPOL = 0). CPHA determines on which SK edge data is shifted in and out. With CPOL = 0 and CPHA = 0, DA9223-A and DA9224-A latch data on the SK rising edge. If the CPHA is set to 1 the data is latched on the SK falling edge. CPOL and CPHA states allow four different combinations of clock polarity and phase. Each setting is incompatible with the other three. The host and DA9223-A and DA9224-A must be set to the same CPOL and CPHA states to communicate with each other.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 33 of 60 © 2021 Dialog Semiconductor Table 11: 4-WIRE Interface Summary Parameters Signal Lines nCS Chip select SI Serial input data Master out Slave in SO Serial output data Master in Slave out SK Transmission clock Interface Push-pull with tristate Supply voltage Selected from VDDIO 1.6 V to 3.3 V Data rate Effective read/write data Up to 7 Mbps Transmission Half-duplex MSB first 16 bit cycles 7-bit address, 1 bit read/write, 8-bit data Configuration CPOL Clock polarity CPHA Clock phase nCS_POL nCS is active low/high Note that reading the same register at high clock rates directly after writing it does not guarantee a correct value. It is recommended to keep a delay of one frame until re-accessing a register that has just been written (for example, by writing/reading another register address in between). 7.4.2 2-WIRE Communication The IF_TYPE bit in the INTERFACE2 register can be used to configure the DA9223-A and DA9224- A control interface as a 2-WIRE serial data interface. In this case the GPIO3 and GPI4 are free for regular input/output functions. DA9223-A and DA9224-A has a configurable device write address (default: 0xD0) and a configurable device read address (default: 0xD1). See control IF_BASE_ADDR1 for details of configurable addresses. The ADDR_SEL_CONF bit is used to configure the device address as IF_BASE_ADDR1 or IF_BASE_ADDR2 depending on the voltage level applied at a configurable GPI port (see Section 7.2.4). The SK port functions as the 2-WIRE clock and the SI port carries all the power manager bi-directional 2-WIRE data. The 2-WIRE interface is open-drain supporting multiple devices on a single line. The bus lines have to be pulled HIGH by external pull-up resistors (in the 2 kΩ to 20 kΩ range). The attached devices only drive the bus lines LOW by connecting them to ground. As a result two devices cannot conflict if they drive the bus simultaneously. In standard/fast mode the highest frequency of the bus is 400 kHz. The exact frequency can be determined by the application and does not have any relation to the DA9223-A and DA9224-A internal clock signals. DA9223-A and DA9224- A will follow the host clock speed within the described limitations, and does not initiate any clock arbitration or slow down. An automatic interface reset can be triggered using control 2WIRE_TO if the clock signal stops to toggle for more than 35 ms. The interface supports operation compatible to Standard, Fast, Fast-Plus and High Speed mode of the I2C-bus specification Rev 4. Operation in high speed mode at 3.4 MHz requires mode changing in order to set spike suppression and slope control characteristics to be compatible with the I2C-bus specification. The high speed mode can be enabled on a transfer by transfer basis by sending the master code (0000 1XXX) at the beginning of the transfer. DA9223-A and DA9224-A do not make use of clock stretching, and deliver read data without additional delay up to 3.4 MHz. Alternatively, PM_IF_HSM configures the interface to use high speed mode continuously. In this case, the master code is not required at the beginning of every transfer. This reduces the communication overhead on the bus but limits the slaves attachable to the bus to compatible devices. The communication on the 2-WIRE bus always takes place between two devices, one acting as the master and the other as the slave. The DA9223-A and DA9224-A will only operate as a SLAVE.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 34 of 60 © 2021 Dialog Semiconductor In contrast to the 4-WIRE mode, the 2-WIRE interface has direct access to two pages of the register map (up to 256 addresses). The register at address zero on each page is used as a page control register (with the 2-WIRE bus ignoring the LSB of control REG_PAGE). Writing to the page control register changes the active page for all subsequent read/write operations unless an automatic return to page 0 was selected by asserting control REVERT. Unless REVERT was asserted after modifying the active page, it is recommended to read back the page control register to ensure that future data exchange is accessing the intended registers. In 2-WIRE operation DA9223-A and DA9224-A offer an alternative way to access register page 2 and page 3. It removes the need for preceding page selection writes by incrementing the device write/read address by one (default 0xD2/0xD3) for any direct access of page 2 and page 3 (page 0 and 1 access requires the basic write/read device address with the MSB of REG_PAGE to be ‘0’).

7.4.3 Details of the 2-WIRE Control Bus Protocol

All data is transmitted across the 2-WIRE bus in groups of eight bits. To send a bit the SDA line is driven towards the intended state while the SCL is LOW (a low on SDA indicates a zero bit). Once the SDA has settled, the SCL line is brought HIGH and then LOW. This pulse on SCL clocks the SDA bit into the receiver’s shift register. A two-byte serial protocol is used containing one byte for address and one byte data. Data and address transfer are transmitted MSB first for both read and write operations. All transmissions begin with the START condition from the master while the bus is in IDLE state (the bus is free). It is initiated by a high to low transition on the SDA line while the SCL is in the high state (a STOP condition is indicated by a low to high transition on the SDA line while the SCL is in the high state). SCL SDA Figure 22: Timing of 2-WIRE START and STOP Condition The 2-WIRE bus is monitored by DA9223-A and DA9224-A for a valid SLAVE address whenever the interface is enabled. It responds immediately when it receives its own slave address. The acknowledge is done by pulling the SDA line low during the following clock cycle (white blocks marked with ‘A’ in Figure 23 to Figure 27). The protocol for a register write from master to slave consists of a start condition, a slave address with read/write bit and the 8-bit register address followed by eight bits of data terminated by a STOP condition. DA9223-A and DA9224-A respond to all bytes with Acknowledge. This is illustrated in Figure 23. SLAVEadr W REGadr A DATA A P S = START condition A = Acknowledge (low) P = STOP condition W = Write (low) Master to Slave Slave to Master 7-bits 1-bit 8-bits 8-bits A S Figure 23: 2-WIRE Byte Write (SDA Line)

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 36 of 60 © 2021 Dialog Semiconductor An update of WRITE_MODE cannot be done without interruption within a transmission frame. Thus, if not previously selected or not set as OTP default, the activation of Repeated Write must be done with a regular write on WRITE_MODE followed by a stop condition. The next frame after a start condition can be written in Repeated Write. S SLAVEadr W A REGadr A DATA A S = START condition A = Acknowledge (low) Sr = Repeat START condition A* = No Acknowledge P = STOP condition W = Write (low) R = Read (high) Master to Slave Slave to Master 7-bits 1 bit 8-bits 8-bits REGadr A 1-bit 8-bits A P DATA ………. A 8-bits Repeated writes Figure 27: 2-WIRE Repeated Write (SDA Line) If a new START or STOP condition occurs within a message, the bus will return to IDLE-mode.

7.5 Internal Temperature Supervision

To protect DA9223-A and DA9224-A from damage due to excessive power dissipation, the internal temperature is continuously monitored. There are three temperature thresholds: Table 12: Over-Temperature Thresholds Temperature Threshold Typical Temperature Setting Interrupt Event Status Bit Masking Bit TEMP_WARN 125 °C E_TEMP_WARN TEMP_WARN M_TEMP_WARN TEMP_CRIT 140 °C E_TEMP_CRIT TEMP_CRIT M_TEMP_CRIT TEMP_POR 150 °C When the junction temperature reaches the TEMP_WARN threshold, DA9223-A and DA9224-A will assert the bit TEMP_WARN and will generate the event E_TEMP_WARN. If not masked using bit M_TEMP_WARN, the output port nIRQ will be asserted. The status bit TEMP_WARN will remain asserted as long as the junction temperature remains higher than TEMP_WARN. When the junction temperature increases further to TEMP_CRIT, DA9223-A and DA9224-A will immediately disable the buck converter, assert the bit TEMP_CRIT, and will generate the event E_TEMP_CRIT. If not masked via bit M_TEMP_CRIT, the output port nIRQ will be asserted. The status bit TEMP_CRIT will remain asserted as long as the junction temperature remains higher than TEMP_CRIT. The buck converter will be kept disabled as long as the junction temperature is above TEMP_CRIT. It will not be automatically re-enabled even after the temperature drops below the valid threshold (even if the controlling GPI is asserted). A direct write into BUCKA_EN or BUCKB_EN, or a toggling of the controlling GPI, is needed to enable the buck converter. Whenever the junction temperature exceeds TEMP_POR, a power on reset to the digital core is immediately asserted, which will stops all functionalities of DA9223-A and DA9224-A. This is needed to prevent possible permanent damage in the case of a rapid temperature increase.

8 Register Definitions

8.1 Register Map

Table 13 displays the register map, where all bits loaded from OTP are marked in bold.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 38 of 60 © 2021 Dialog Semiconductor Table 13: Register Map Addr Function 7 6 5 4 3 2 1 0 0x 00 PAGE_CON REVERT WRITE_MODE Reserved Reserved Reserved 0x 50 STATUS_A Reserved Reserved Reserved GPI4 GPI3 GPI2 GPI1 GPI0 0x 51 STATUS_B RAMP_READY_B RAMP_READY_A OV_CURR_B OV_CURR_A TEMP_CRIT TEMP_WARN PWRGOOD_B PWRGOOD_A 0x 52 EVENT_A Reserved E_UVLO_IO Reserved E_GPI4 E_GPI3 E_GPI2 E_GPI1 E_GPI0 0x 53 EVENT_B Reserved Reserved E_OV_CURR_B E_OV_CURR_A E_TEMP_CRIT E_TEMP_WARN E_PWRGOODB E_PWRGOOD_A 0x 54 MASK_A Reserved M_UVLO_IO Reserved M_GPI4 M_GPI3 M_GPI2 M_GPI1 M_GPI0 0x 55 MASK_B Reserved Reserved M_OV_CURR_B M_OV_CURR_A M_TEMP_CRIT M_TEMP_WARN M_PWRGOOD_B M_PWRGOOD_A 0x 56 CONTROL_A V_LOCK 0x 58 GPI0-1 GPI1_MODE GPI1_TYPE GPI0_MODE GPI0_TYPE 0x 59 GPIO2-3 GPIO3_MODE GPIO3_TYPE GPIO2_MODE GPIO2_TYPE 0x 5A GPI4 Reserved Reserved GPI4_MODE GPI4_TYPE 0x 5D BUCKA_CONT Reserved VBUCKA_SEL BUCKA_PD_DIS BUCKA_EN 0x 5E BUCKB_CONT Reserved VBUCKB_SEL BUCKB_PD_DIS BUCKB_EN 0x 80 PAGE_CON REVERT WRITE_MODE Reserved Reserved Reserved 0x D0 BUCK_ILIM 0x D1 BUCKA_CONF 0x D2 BUCKB_CONF 0x D3 BUCK_CONF Reserved Reserved Reserved PH_SH_EN_B PH_SH_EN_A PHASE_SEL_B 0x D5 VBUCKA_MAX Reserved 0x D6 VBUCKB_MAX Reserved 0x D7 VBUCKA_A BUCKA_SL_A 0x D8 VBUCKA_B BUCKA_SL_B 0x D9 VBUCKB_A BUCKB_SL_A 0x DA VBUCKB_B BUCKB_SL_B 0x 100 PAGE_CON REVERT WRITE_MODE Reserved Reserved Reserved 0x 105 INTERFACE R/W_POL CPHA CPOL nCS_POL 0x 106 INTERFACE2 IF_TYPE PM_IF_HSM PM_IF_FMP PM_IF_V Reserved Reserved Reserved Reserved 0x 143 CONFIG_A Reserved Reserved Reserved 2WIRE_TO GPI_V Reserved IRQ_TYPE IRQ_LEVEL 0x 144 CONFIG_B UVLO_IO_DIS PGB_DVC_MASK PGA_DVC_MASK RELOAD_FUNC_EN 0x 145 CONFIG_C Reserved Reserved Reserved GPI4_PUPD GPIO3_PUPD GPIO2_PUPD GPI1_PUPD GPI0_PUPD 0x 146 CONFIG_D 0x 147 CONFIG_E STAND_ALONE Reserved Reserved Reserved Reserved 0x 148 CONFIG_F Reserved Reserved 0x 200 PAGE_CON REVERT WRITE_MODE Reserved Reserved Reserved 0x 201 DEVICE_ID 0x 202 VARIANT_ID 0x 203 CUSTOMER_ID 0x 204 CONFIG_ID GPIO3_PIN Register Page 0 SLEW_RATE_A DEBOUNCING GPI1_PIN GPI0_PIN GPIO2_PIN SLEW_RATE_B REG_PAGE ADDR_SEL_CONF BUCKA_GPI VBUCKA_A VBUCKA_B REG_PAGE BUCKA_ILIM Register Page 1 BUCKB_MODE Reserved GPI4_PIN VBUCKA_GPI VBUCKB_GPI BUCKB_GPI BUCKA_DOWN_CTRL OCA_MASK Register Page 2 REG_PAGE IF_BASE_ADDR1 BUCKA_UP_CTRL BUCKA_MODE VBUCKB_MAX PHASE_SEL_A VBUCKA_MAX OCB_MASK CUST_ID CONFIG_REV MRC VRC BUCKB_ILIM BUCKB_DOWN_CTRL BUCKB_UP_CTRL VBUCKB_A VBUCKB_B IF_BASE_ADDR2 DEV_ID OSC_TUNE READYB_CONF Register Page 4 REG_PAGE BUCKA_PG_SELBUCKB_PG_SEL READYA_CONF

8.2 Register Definitions

8.2.1 Register Page Control

7 R/W REVERT Resets REG_PAGE to 000 after read/write access

6 R/W WRITE_MODE

2-WIRE multiple write mode (Note 1) 0: Page Write Mode 1: Repeated Write Mode 5:3 R/W (reserved) 2:0 R/W REG_PAGE I2C 00x: Selects Register 0x00 to 0xFF 01x: Selects Register 0x100 to 0x17F 10x: Selects Register 0x200 to 0x27F SPI 000: Selects Register 0x00 to 0x7F 001: Selects Register 0x80 to 0xFF 010: Selects Register 0x100 to 0x17F 100: Selects Register 0x200 to 0x27F Note 1 Not used for 4-WIRE-IF.

8.2.2 Register Page 0

8.2.2.1 System Control and Event

The STATUS registers report the current value of the various signals at the time that it is read out. Register Bit Type Label Description 0x50 STATUS_A 7:5 R (reserved)

4 R GPI4 GPI4 level

3 R GPI3 GPI3 level

2 R GPI2 GPI2 level

1 R GPI1 GPI1 level

0 R GPI0 GPI0 level

7 R RAMP_READY_B De-asserted during Buck A DVC, power up and

6 R RAMP_READY_A De-asserted during Buck B DVC, power up and

5 R OV_CURR_B Asserted as long as the current limit for Buck B is hit

4 R OV_CURR_A Asserted as long as the current limit for Buck A is hit

3 R TEMP_CRIT Asserted as long as the thermal shutdown threshold

2 R TEMP_WARN Asserted as long as the thermal warning threshold is

1 R PWRGOOD_B Asserted as long as the Buck B output voltage is in

0 R PWRGOOD_A Asserted as long as the Buck A output voltage is in

The EVENT registers hold information about events that have occurred in DA9223-A and DA9224-A. Events are triggered by a change in the status register which contains the status of monitored signals. When an EVENT bit is set in the event register, the IRQ signal is asserted unless the event is masked by a bit in the mask register. The IRQ triggering event register will be cleared from the host by writing back its read value. New events occurring during clearing will be delayed before they are passed to the event register, ensuring that the host controller does not miss them. Register Bit Type Label Description 0x52 EVENT_A

7 R (reserved)

6 R E_UVLO_IO UVLO_IO caused event

5 R (reserved)

4 R E_GPI4 GPI4 event according to active state setting

3 R E_GPI3 GPI3 event according to active state setting

2 R E_GPI2 GPI2 event according to active state setting

1 R E_GPI1 GPI1 event according to active state setting

0 R E_GPI0 GPI0 event according to active state setting

5 R E_OV_CURR_B OV_CURR Buck B caused event

4 R E_OV_CURR_A OV_CURR Buck A caused event

3 R E_TEMP_CRIT TEMP_CRIT caused event

2 R E_TEMP_WARN TEMP_WARN caused event

1 R E_PWRGOOD_B PWRGOOD loss at Buck B caused event

0 R E_PWRGOOD_A PWRGOOD loss at Buck A caused event

7 R/W (reserved)

6 R/W M_UVLO_IO Mask UVLO_IO caused nIRQ

5 R/W (reserved)

4 R/W M_GPI4 Mask nIRQ interrupt at GPI4

3 R/W M_GPI3 Mask nIRQ interrupt at GPI3

2 R/W M_GPI2 Mask nIRQ interrupt at GPI2

1 R/W M_GPI1 Mask nIRQ interrupt at GPI1

0 R/W M_GPI0 Mask nIRQ interrupt at GPI0

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 41 of 60 © 2021 Dialog Semiconductor Register Bit Type Label Description 0x55 MASK_B 7:6 R/W (reserved)

5 R/W M_OV_CURR_B Mask OV_CURR Buck B caused nIRQ and event

4 R/W M_OV_CURR_A Mask OV_CURR Buck A caused nIRQ and event

3 R/W M_TEMP_CRIT Mask TEMP_CRIT caused nIRQ

2 R/W M_TEMP_WARN Mask TEMP_WARN caused nIRQ

1 R/W M_PWRGOOD_B Mask PWRGOOD Buck B caused nIRQ

0 R/W M_PWRGOOD_A Mask PWRGOOD Buck A caused nIRQ

7 R/W V_LOCK

0: Allows host writes into registers 0xD0 to 0x14F 1: Disables register 0xD0 to 0x14F re- programming from control interfaces 6:5 R/W SLEW_RATE_B Buck B DVC slewing is executed at 00: 10mV every 4.0 µs 01: 10mV every 2.0 µs 10: 10mV every 1.0 µs 11: 10mV every 0.5 µs 4:3 R/W SLEW_RATE_A Buck A DVC slewing is executed at 00: 10mV every 4.0 µs 01: 10mV every 2.0 µs 10: 10mV every 1.0 µs 11: 10mV every 0.5 µs 0:2 R/W DEBOUNCE Input signals debounce time: 000: no debounce time 001: 0.1 ms 010: 1.0 ms 011: 10 ms 100: 50 ms 101: 250 ms 110: 500 ms 111: 1000 ms

8.2.2.2 GPIO Control

7 R/W GPI1_MODE 0: GPI: debouncing off

1: GPI: debouncing on

6 R/W GPI1_TYPE 0: GPI: active low

1: GPI: active high 5:4 R/W GPI1_PIN PIN assigned to: 00: GPI >00: Reserved

3 R/W GPI0_MODE 0: GPI: debouncing off

1: GPI: debouncing on

2 R/W GPI0_TYPE 0: GPI: active low

1: GPI: active high 1:0 R/W GPI0_PIN PIN assigned to: 00: GPI 01: Track enable 1x: Reserved Register Bit Type Label Description 0x59 GPIO2-3

7 R/W GPIO3_MODE

0: GPI: debouncing off GPO: Sets output to passive level 1: GPI: debouncing on GPO: Sets output to active level

6 R/W GPIO3_TYPE 0: GPI/GPO: active low

1: GPI/GPO: active high 5:4 R/W GPIO3_PIN PIN assigned to: 00: GPI 01: Reserved 10: GPO (Open drain) 11: GPO (Push-pull)

3 R/W GPIO2_MODE

0: GPI: debouncing off GPO: Sets output to passive level 1: GPI: debouncing on GPO: Sets output to active level

2 R/W GPIO2_TYPE 0: GPI/GPO: active low

1: GPI/GPO: active high 1:0 R/W GPIO2_PIN PIN assigned to: 00: GPI 01: Reserved 10: GPO (Open drain) 11: GPO (Push-pull) Register Bit Type Label Description 0x5A GPI4 7:4 R/W (reserved)

3 R/W GPI4_MODE 0: GPI: debouncing off

1: GPI: debouncing on

2 R/W GPI4_TYPE 0: GPI: active low

1: GPI: active high 1:0 R/W GPI4_PIN PIN assigned to: 00: GPI 01: Reserved 1x: Reserved

8.2.2.3 Regulators Control

Register Bit Type Label Description 0x5D BUCKA_CON T 6:5 R/W VBUCKA_GPI Selects the GPI that specifies the target voltage of VBUCKA. This is VBUCKA_A on active to passive transition, VBUCKA_B on passive to active transition. Active high/low is controlled by GPIx_TYPE. 00: Not controlled by GPIO 01: GPI1 controlled 10: GPIO2 controlled 11: GPI4 controlled

4 R/W VBUCKA_SEL

Buck A voltage is selected from (ramping): 0: VBUCKA_A 1: VBUCKA_B

3 R/W BUCKA_PD_DIS

0: Enable pull-down resistor of Buck A when the buck is disabled 1: Disable pull-down resistor of Buck A when the buck is disabled 2:1 R/W BUCKA_GPI GPI enables the Buck A on passive to active state transition, disables the Buck A on active to passive state transition 00: Not controlled by GPIO 01: GPI0 controlled 10: GPI1 controlled 11: GPIO3 controlled

0 R/W BUCKA_EN 0: Buck A disabled

1: Buck A enabled Register Bit Type Label Description 0x5E BUCKB_CON T 6:5 R/W VBUCKB_GPI Selects the GPI that specifies the target voltage of VBUCKB. This is VBUCKB_A on active to passive transition, VBUCKB_B on passive to active transition. Active high/low is controlled by GPIx_TYPE 00: Not controlled by GPIO 01: GPI1 controlled 10: GPIO2 controlled 11: GPI4 controlled

4 R/W VBUCKB_SEL

Buck A voltage is selected from (ramping): 0: VBUCKB_A 1: VBUCKB_B

3 R/W BUCKB_PD_DIS

0: Enable pull-down resistor of Buck B when the buck is disabled 1: Disable pull-down resistor of Buck B when the buck is disabled

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 44 of 60 © 2021 Dialog Semiconductor Register Bit Type Label Description 2:1 R/W BUCKB_GPI GPI enables the Buck B on passive to active state transition, disables the Buck B on active to passive state transition 00: Not controlled by GPIO 01: GPI0 controlled 10: GPI1 controlled 11: GPIO3 controlled

0 R/W BUCKB_EN 0: Buck B disabled

1: Buck B enabled

8.2.3 Register Page 1

Register Bit Type Label Description 0x80 PAGE_CON 2-WIRE multiple write mode 0: Page Write Mode 1: Repeated Write Mode 5:3 R/W (reserved) 2:0 R/W REG_PAGE I2C 00x: Selects Register 0x00 to 0xFF 01x: Selects Register 0x100 to 0x17F 10x: Selects Register 0x200 to 0x27F SPI 000: Selects Register 0x00 to 0x7F 001: Selects Register 0x80 to 0xFF 010: Selects Register 0x100 to 0x17F 100: Selects Register 0x200 to 0x27F

8.2.3.1 Regulators Settings

Register Bit Type Label Description 0xD0 BUCK_ILIM 7:4 R/W BUCKB_ILIM Current limit per phase: 0000: 4000 mA 0001: 4200 mA 0010: 4400 mA continuing through… 1001: 5800 mA to… 1110: 6800 mA 1111: 7000 mA

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 45 of 60 © 2021 Dialog Semiconductor Register Bit Type Label Description 3:0 R/W BUCKA_ILIM Current limit per phase: 0000: 4000 mA 0001: 4200 mA 0010: 4400 mA continuing through… 1001: 5800 mA to… 1110: 6800 mA 1111: 7000 mA Register Bit Type Label Description 0xD1 BUCKA_CON F 7:5 R/W BUCKA_DOWN_ CTRL Buck A voltage ramping during power down 000: 1.25 mV/µs 001: 2.5 mV/µs 010: 5 mV/µs 011: 10 mV/µs 100: 20 mV/µs 101: 30 mV/µs 110: 40 mV/µs 111: Reserved 4:2 R/W BUCKA_UP_CT RL Buck A voltage ramping during start up 000: 1.25 mV/µs 001: 2.5 mV/µs 010: 5 mV/µs 011: 10 mV/µs 100: 20 mV/µs (Note 1) 101: 30 mV/µs 110: 40 mV/µs 111: target voltage applied immediately (no soft start) 1:0 R/W BUCKA_MODE 00: PFM/PWM mode controlled via voltage A and B registers 01: Automatic mode (1-phase) 10: Buck A always operates in PWM mode 11: Automatic mode Note 1 Settings higher than 20 mV/µs may cause significant overshoot.

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 46 of 60 © 2021 Dialog Semiconductor Register Bit Type Label Description 0xD2 BUCKB_CON F 7:5 R/W BUCKB_DOWN_ CTRL Buck B voltage ramping during power down 000: 1.25 mV/µs 001: 2.5 mV/µs 010: 5 mV/µs 011: 10 mV/µs 100: 20 mV/µs 101: 30 mV/µs 110: 40 mV/µs 111: Reserved 4:2 R/W BUCKB_UP_CT RL Buck B voltage ramping during start up 000: 1.25 mV/µs 001: 2.5 mV/µs 010: 5 mV/µs 011: 10 mV/µs 100: 20 mV/µs (Note 1) 101: 30 mV/µs 110: 40 mV/µs 111: target voltage applied immediately (no soft start) 1:0 R/W BUCKB_MODE 00: PFM/PWM mode controlled via voltage A and B registers 01: Automatic mode (1-phase) 10: Buck B always operates in PWM mode 11: Automatic mode Note 1 Settings higher than 20mV/µs may cause significant overshoot. Register Bit Type Label Description 0xD3 BUCK_CONF 7:5 R/W (reserved)

4 R/W PH_SH_EN_B Enable current dependent phase shedding in PWM for

3 R/W PH_SH_EN_A Enable current dependent phase shedding in PWM for

2 R/W PHASE_SEL_B

Phase selection for Buck B in PWM 0: 1 phase is selected 1: 2 phases are selected 1:0 R/W PHASE_SEL_A Phase selection for Buck A in PWM mode. Settings >01 apply only for DA9223-A otherwise the number of phases is limited to max 2 00: 1 phase is selected 01: 2 phases are selected 10: 3 phases are selected (uneven 0/90/180 phase shift) 11: 4 phases are selected

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 47 of 60 © 2021 Dialog Semiconductor Register Bit Type Label Description 0xD5 VBUCKA_MA X 6:0 R VBUCKA_MAX Sets the maximum voltage allowed for Buck A (OTP programmed, access only in test mode) 0000000: 0.30 V 0000001: 0.31 V 0000010: 0.32 V Continuing through… 1000110: 1.0 V to… 1111101: 1.55 V 1111110: 1.56 V 1111111: 1.57 V Register Bit Type Label Description 0xD6 VBUCKB_MA X 6:0 R VBUCKB_MAX Sets the maximum voltage allowed for Buck B (OTP programmed, access only in test mode) 0000000: 0.30 V 0000001: 0.31 V 0000010: 0.32 V Continuing through… 1000110: 1.0 V to… 1111101: 1.55 V 1111110: 1.56 V 1111111: 1.57 V

7 R/W BUCKA_SL_A

0: Configures Buck A to PWM mode whenever selecting A voltage setting 1: Configures Buck A to automatic mode whenever selecting A voltage setting 6:0 R/W VBUCKA_A 0000000: 0.30 V 0000001: 0.31 V 0000010: 0.32 V Continuing through… 1000110: 1.0 V to… 1111101: 1.55 V 1111110: 1.56 V 1111111: 1.57 V Register Bit Type Label Description 0xD8 VBUCKA_B

7 R/W BUCKA_SL_B

0: Configures Buck A to PWM mode, whenever selecting B voltage setting 1: Configures Buck A to automatic mode, whenever selecting B voltage setting 6:0 R/W VBUCKA_B 0000000: 0.30 V 0000001: 0.31 V 0000010: 0.32 V Continuing through… 1000110: 1.0 V to… 1111101: 1.55 V 1111110: 1.56 V 1111111: 1.57 V Register Bit Type Label Description 0xD9 VBUCKB_A

7 R/W BUCKB_SL_A

0: Configures Buck B to PWM mode, whenever selecting A voltage setting 1: Configures Buck B to automatic mode, whenever selecting A voltage setting 6:0 R/W VBUCKB_A 0000000: 0.30 V 0000001: 0.31 V 0000010: 0.32 V Continuing through… 1000110: 1.0 V to… 1111101: 1.55 V 1111110: 1.56 V 1111111: 1.57 V

7 R/W BUCKB_SL_B

0: Configures Buck B to PWM mode, whenever selecting B voltage setting 1: Configures Buck B to automatic mode, whenever selecting B voltage setting 6:0 R/W VBUCKB_B 0000000: 0.30 V 0000001: 0.31 V 0000010: 0.32 V Continuing through… 1000110: 1.0 V to… 1111101: 1.55 V 1111110: 1.56 V 1111111: 1.57 V

8.2.4 Register Page 2

Register Bit Type Label Description 0x100 PAGE_CON 2-WIRE multiple write mode 0: Page Write Mode 1: Repeated Write Mode 5:3 R/W (reserved) 2:0 R/W REG_PAGE I2C 00x: Selects Register 0x00 to 0xFF 01x: Selects Register 0x100 to 0x17F 10x: Selects Register 0x200 to 0x27F SPI 000: Selects Register 0x00 to 0x7F 001: Selects Register 0x80 to 0xFF 010: Selects Register 0x100 to 0x17F 100: Selects Register 0x200 to 0x27F

8.2.4.1 Interface and OTP Settings (Shared with DA9063)

4 MSB of 2-WIRE control interfaces base address

11010000 = 0xD0 write address of PM 2-WIRE interface (page 0 and 1) 11010001 = 0xD1 read address of PM 2-WIRE interface (page 0 and 1) 11010010 = 0xD2 write address of PM-2-WIRE interface (page 2 and 3) 11010011 = 0xD3 read address of PM-2-WIRE interface (page 2 and 3) 11010101 = 0xD5 read address of PM-2-WIRE interface (page 4 and 5) Code ‘0000’ is reserved for unprogrammed OTP (triggers start-up with hardware default interface address)

3 R/W R/W_POL

4-WIRE: Read/Write bit polarity 0: Host indicates reading access via R/W bit = ‘0’ 1: Host indicates reading access via R/W bit = ‘1’

2 R/W CPHA 4-WIRE interface clock phase (see Table 10)

1 R/W CPOL

4-WIRE interface clock polarity 0: SK is low during idle 1: SK is high during idle

0 R/W nCS_POL

4-WIRE chip select polarity 0: nCS is low active 1: nCS is high active

7 R/W IF_TYPE

0: Power manager interface is 4-WIRE. Automatically configures GPIO3 and GPI4 as interface signals. The GPIO configuration is overruled. 1: Power manager interface is 2-WIRE

6 R/W PM_IF_HSM Enables continuous high speed mode on 2-WIRE

interface if asserted (no master code required)

5 R/W PM_IF_FMP Enables 2-WIRE interface operating with fast mode+

4 R/W PM_IF_V

0: Power manager interface in 2-WIRE mode is supplied from VDDCORE (4-WIRE always from VDDIO) 1: Power manager interface in 2-WIRE mode is supplied from VDDIO (4-WIRE always from VDDIO) 0:3 R/W (reserved)

8.2.4.2 Application Configuration Settings

4 R/W 2WIRE_TO

Enables automatic reset of 2-WIRE interface if the clock stays low for >35 ms 0: Disabled 1: Enabled

3 R/W GPI_V

GPIs are supplied from: 0: VDDCORE 1: VDDIO

2 R/W (reserved)

1 R/W IRQ_TYPE

nIRQ output port is: 0: Push-pull 1: Open drain (requires external pull-up resistor)

0 R/W IRQ_LEVEL

nIRQ output port is: 0: Active low 1: Active high Register Bit Type Label Description 0x144 CONFIG_B

7 R/W UVLO_IO_DIS

Disable the UVLO for the VDDIO rail and its comparator (suggested for rail voltages different to

1.8 V and to save quiescent current)

6 R/W PGB_DVC_MAS

K Power-good configuration for Buck B 0: Power-good signal not masked during DVC transitions 1: Power-good signal masked during DVC transitions (keep previous status)

5 R/W PGA_DVC_MAS

K Power-good configuration for Buck A 0: Power-good signal not masked during DVC transitions 1: Power-good signal masked during DVC transitions (keep previous status)

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 52 of 60 © 2021 Dialog Semiconductor Register Bit Type Label Description 4:3 R/W OCB_MASK Over Current configuration for Buck B 00: Event generation due to over current hit is always active during DVC transitions of the Buck converter 01: Event generation due to over current hit is masked during DVC transitions of the buck converter + 2 µs extra masking at the end 10: Event generation due to over current hit is masked during DVC transitions of the buck converter + 10 µs extra masking at the end 11: Event generation due to over current hit is masked during DVC transitions of the buck converter + 50 µs extra masking at the end 2:1 R/W OCA_MASK Over Current configuration for Buck A 00: Event generation due to over current hit is always active during DVC transitions of the buck converter 01: Event generation due to over current hit is masked during DVC transitions of the buck converter + 2 µs extra masking at the end 10: Event generation due to over current hit is masked during DVC transitions of the buck converter + 10 µs extra masking at the end 11: Event generation due to over current hit is masked during DVC transitions of the buck converter + 50 µs extra masking at the end

0 R/W RELOAD_FUNC

_EN Enable the OTP re-load function for GPI0 when configured as input port Register Bit Type Label Description 0x145 CONFIG_C 7:5 R/W (reserved)

4 R/W GPI4_PUPD 0: GPI: pull-down resistor disabled

1: GPI: pull-down resistor enabled

3 R/W GPIO3_PUPD

0: GPI: pull-down resistor disabled GPO (open drain): pull up resistor disabled (external pull-up resistor) 1: GPI: pull-down resistor enabled GPO (open drain): pull up resistor

2 R/W GPIO2_PUPD

0: GPI: pull-down resistor disabled GPO (open drain): pull up resistor disabled (external pull-up resistor) 1: GPI: pull-down resistor enabled GPO (open drain): pull up resistor enabled

1 R/W GPI1_PUPD 0: GPI: pull-down resistor disabled

1: GPI: pull-down resistor enabled

0 R/W GPI0_PUPD 0: GPI: pull-down resistor disabled

1: GPI: pull-down resistor enabled

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 53 of 60 © 2021 Dialog Semiconductor Register Bit Type Label Description 0x146 CONFIG_D 7:6 R/W BUCKB_PG_SEL Selection of the PG signal for Buck B 00: none 01: GPO2 10: GPO3 11: reserved 5:4 R/W BUCKA_PG_SEL Selection of the PG signal for Buck A 00: none 01: GPO2 10: GPO3 11: reserved 3:2 R/W READYB_CONF Selection of the READY signal for Buck B 00: none 01: GPO2 10: GPO3 11: reserved 1:0 R/W READYA_CONF Selection of the READY signal for Buck A 00: none 01: GPO2 10: GPO3 11: reserved Register Bit Type Label Description 0x147 CONFIG_E

7 R/W STAND_ALONE

0: DA9223-A and DA9224-A is used as companion IC to DA9063 or DA9063-compliant 1: DA9223-A and DA9224-A is stand alone or as companion IC with another PMU not DA9063-compliant 6:5 R/W (reserved) 4:3 R/W (reserved) 2:0 R/W OSC_TUNE Tune the main 6 MHz oscillator frequency: 000: no tune 001: +180 kHz 010: +360 kHz 011: +540 kHz 100: +720 kHz 101: +900 kHz 110: +1080 kHz 111: +1260 kHz

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 54 of 60 © 2021 Dialog Semiconductor Register Bit Type Label Description 0x148 CONFIG_F 7:4 R/W IF_BASE_ADDR If a second I2C address is to be selected on ADR_SEL_CONF, this field configures the second address. 11010000 = 0xD0 write address of PM 2-WIRE interface (page 0 and 1) 11010001 = 0xD1 read address of PM 2-WIRE interface (page 0 and 1) 11010010 = 0xD2 write address of PM-2-WIRE interface (page 2 and 3) 11010011 = 0xD3 read address of PM-2-WIRE interface (page 2 and 3) 11010101 = 0xD5 read address of PM-2-WIRE interface (page 4 and 5) Code ‘0000’ is reserved for unprogrammed OTP (triggers start-up with hardware default interface address) 3:2 R (reserved)

1 R/W ADDR_SEL_CO

Selects the GPI for the alternative I2C address selection: 00: none 01: GPI0 10: GPI1 11: GPI4

8.2.5 Register Page 4

Register Bit Type Label Description 0x200 PAGE_CON 2-WIRE multiple write mode 0: Page Write Mode 1: Repeated Write Mode 5:3 R/W (reserved) 2:0 R/W REG_PAGE I2C 00x: Selects Register 0x00 to 0xFF 01x: Selects Register 0x100 to 0x17F 10x: Selects Register 0x200 to 0x27F SPI 000: Selects Register 0x00 to 0x7F 001: Selects Register 0x80 to 0xFF 010: Selects Register 0x100 to 0x17F 100: Selects Register 0x200 to 0x27F

8.2.5.1 Chip and OTP IDs

Register Bit Type Label Description 0x201 DEVICE_ID 7:0 R DEV_ID Device ID Register Bit Type Label Description 0x202 VARIANT_ID 7:4 R MRC Mask Revision Code 3:0 R VRC Chip Variant Code Register Bit Type Label Description 0x203 CUSTOMER_ ID 7:0 R CUST_ID Customer ID Register Bit Type Label Description 0x204 CONFIG_ID 7:0 R CONFIG_REV OTP Variant

9 Application Information

The following recommended components are examples selected from requirements of a typical application.

9.1 Capacitor Selection

Ceramic capacitors are used as bypass capacitors at all VDD and output rails. When selecting a capacitor, especially for types with high capacitance at smallest physical dimension, the DC bias characteristic has to be taken into account. Table 14: Recommended Capacitor Types Application Value Size Temp Char Tol V-Rate Type VOUT output bypass 47 uF 1210 X7R ±15 % ±10 % 6.3 V Murata GCM32ER70J476KE19 22 uF 1206 X7R ±15 % ±10 % 6.3 V Murata GCM31CR70J226KE23 10 uF 0805 X7R ±15 % ±10 % 6.3 V Murata GCM21BR70J106KE22 VDDx bypass 10 uF 0805 X7R ±15 % ±10 % 10 V Murata GCM21BR71A106KE22 VSYS bypass 1 uF 0603 X7R ±15 % ±10 % 16 V Murata GCM188R71C105KA64 VDDIO bypass 100 nF 0402 X7R ±15 % ±10 % 50 V Murata GCM155R71H104KE02

9.2 Inductor Selection

Inductors should be selected based upon the following parameters:

Rated max. current: usually a coil provides two current limits: The Isat specifies the maximum current at which the inductance drops by 30 % of the nominal value. The Imax is defined by the maximum power dissipation and is applied to the effective current.
DC resistance: critical for the converter efficiency and should therefore be minimized.
The typical recommended output inductance is 0.22 µH per phase. Use of larger output inductance degrades the load transient performance of the buck converter. Table 15: Recommended Inductor Types Application Value Size Imax(dc) Isat Tol DC res Type BUCK 0.22 uH 2.5 mm x 2.0 mm x 1.0 mm 7.1 A 8.0 A ±20% 12 mΩ TDK TFM252010ALMAR22M TAA 0.22 uH 2.5 mm x 2.0 mm x 1.2 mm

8.5 A 10 A ±20% 8 mΩ

0.24 uH 2.0 mm x 1.6 mm x 1.0 mm 7.0 A 7.5 A ±20% 15 mΩ TDK TFM201610ALMAR24M TAA 0.24 uH 2.0 mm x 1.6 mm x 1.2 mm 4.8 A 5.9 A ±20% 16 mΩ TOKO DFE201612PD- R24M 0.47 uH 2.5 mm x 2.0 mm x 1.0 mm 5.4 A 6.5 A ±20% 20 mΩ TDK TFM252010ALMAR47M TAA 0.47 uH 2.5 mm x 2.0 mm x 1.2 mm 5.6 A 6.5 A ±20% 19 mΩ TDK TFM252012ALMAR47M TAA 0.47 uH 2.5 mm x 2.0 mm x 1.2 mm 4.7 A 6.1 A ±20% 21 mΩ TOKO DFE252012PD- R47M 0.47 uH 2.0 mm x 1.6 mm x 1.0 mm 5.0 A 5.8 A ±20% 28 mΩ TDK TFM201610ALMAR47M TAA 0.47 uH 2.0 mm x 1.6 mm x 1.2 mm 3.8 A 4.5 A ±20% 26 mΩ TOKO DFE201612PD- R47M 0.24 uH 2.0 mm x 1.6 mm x 1.2 mm 5.0 A 7.7 A ±20% 16 mΩ Taiyo Yuden MEMK2016TR24MV 0.47 uH 2.0 mm x 1.6 mm x 1.2 mm 3.8 A 5.5 A ±20% 28 mΩ Taiyo Yuden MEMK2016TR47MV 0.24 uH 2.5 mm x 2.0 mm x 1.2 mm 5.9 A 8.5 A ±20% 13 mΩ Taiyo Yuden MEMK2520TR24MV 0.47 uH 2.5 mm x 2.0 mm x 1.2 mm 4.7 A 6.2 A ±20% 21 mΩ Taiyo Yuden MEMK2520TR47MV

10.1 Package Outlines

Figure 28: DA9223-A/24-A 66 TFBGA 0.8 mm Pitch Package Outline Drawing

10.2 Package Marking

Table 16: Package Marking The ordering number consists of the part number followed by a suffix indicating the packing method. For details and availability, please consult Dialog Semiconductor’s website or your local sales representative. Table 17: Ordering Information Part Number Package Package Description Comment Package Outline DA9223-xxFT1BB-A 66 TFBGA Tray Auto Grade 2 Figure 28 DA9223-xxFT2BB-A, Note 1 66 TFBGA T&R, 3000pcs Auto Grade 2 DA9223-xxFTDBB-A 66 TFBGA T&R, 2200pcs Auto Grade 2 DA9224-xxFT1BB-A 66 TFBGA Tray Auto Grade 2 DA9224-xxFT2BB-A, Note 1 66 TFBGA T&R, 3000pcs Auto Grade 2 DA9224-xxFTDBB-A 66 TFBGA T&R, 2200pcs Auto Grade 2 DA9223-xxFT1BB-AT 66 TFBGA Tray Auto Grade 2 with High Temp screening DA9223-xxFT2BB-AT, Note 1 66 TFBGA T&R, 3000pcs Auto Grade 2 with High Temp screening DA9223-xxFTDBB-AT 66 TFBGA T&R, 2200pcs Auto Grade 2 with High Temp screening DA9224-xxFT1BB-AT 66 TFBGA Tray Auto Grade 2 with High Temp screening DA9224-xxFT2BB-AT, Note 1 66 TFBGA T&R, 3000pcs Auto Grade 2 with High Temp screening DA9224-xxFTDBB-AT 66 TFBGA T&R, 2200pcs Auto Grade 2 with High Temp screening Note 1 Large reel sizes are no longer supported, contact sales for further information

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter Datasheet Revision 2.6 23-Apr-2021 CFR0011-120-00 60 of 60 © 2021 Dialog Semiconductor Status Definitions Revision Datasheet Status Product Status Definition 1.<n> Target Development This datasheet contains the design specifications for product development. Specifications may be changed in any manner without notice. 2.<n> Preliminary Qualification This datasheet contains the specifications and preliminary characterization data for products in pre-production. Specifications may be changed at any time without notice in order to improve the design. 3.<n> Final Production This datasheet contains the final specifications for products in volume production. The specifications may be changed at any time in order to improve the design, manufacturing and supply. Major specification changes are communicated via Customer Product Notifications. 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Product Information

DA9223-XXFT1BB-A specifications and overview.

Summary

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter

Description

Auto Grade 0.8 mm Pitch Multi-Phase Buck Converter

Source title DA9223-XXFT1BB-A Datasheet(PDF) - Dialog Semiconductor

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