MPM3690-50A MPS | Alldatasheet
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Technical content
16V, Dual 25A or Single 50A DC/DC Power Module MPM3690-50 Rev. 1.0 MonolithicPower.com 1 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved.
DESCRIPTION
The MPM3690-50 is a dual 25 A or single 50A output power module that offers a complete power solution with exce llent load and line regulation. The MPM3690-50 supports a 4V to 16V input voltage range and a 0.6V to 1.8V output voltage range. The voltage s at the MPM3690-50’s two outputs can be set separately by a single resistor per output. The MPM3690-50 offers two configurations: the MPM3690-50A has a dual 25A output, and the MPM3690-50B has a single 50A output. The MPM3690-50 is als o pin-compatible with the MPM3690-20A/B (dual 13A or single 2 6A) and the MPM3690-30A/B (dual 18A or single 36 A) power modules. The MPM3690-50 adopts MPS’s proprietary, multi-phase constant -on-time (MCOT) control, which provides ultra-fast transient response and minimizes the output capacitance. The MPM3690-50 integrates a monolithic DC/DC converter, power inductor, and other passive components, and is available in a BGA (16mmx16mmx5.18mm) package,
FEATURES
Pin-Compatible Dual 25A and Single 50A Output Power Modules o MPM3690-50A Dual 25A o MPM3690-50B Single 50A 4V to 16V Input Voltage Range o 3.2V to 16V Input Voltage Range with External 3.3V VCC Bias 0.6V to 1.8V Output Voltage Range Ultra-Fast Transient Enabled by COT Control Adjustable Switching Frequency Adjustable Soft-Start Time Over-Current and Over-Voltage Protection Differential Remote Sense for Both Output Channels Pin-Compatible with the MPM3690-20A/B and MPM3695-30A/B Available in a BGA Package (16mmx16mmx5.18mm)
APPLICATIONS
Telecom and Networking Equipment Industrial Equipment FPGA and ASIC Power Systems All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION VOUT2 VIN VOUT1 MPM3690-50B VOUT = 1.2V/50A CIN VS1P COUT VS2P FB1 4V to 16V Input MODE VCC FB2 VS2N VS1N RFB COUT EN2 CSS1 RF RF EN1 EN 10kΩ PG 60.4kΩ Figure 1: Interleaved Operation at 1.2V, 50A 100 0 5 10 15 20 25 30 35 40 45 50 EFFICIENCY (%) LOAD CURRENT (A) Efficiency vs. Load Current VIN = 12V, with external 3.3V VCC Vout=1.8V,Fsw=600KHz Vout=1.5V,Fsw=600KHz Vout=1.2V,Fsw=600KHz Vout=1V,Fsw=600KHz Vout=0.8V,Fsw=600KHz
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 2 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Configuration Package Top Marking MSL Rating MPM3690GBF-50A Dual 25A Output BGA (16mmx16mmx5.18mm) See Below 3 MPM3690GBF-50B Single 50A Output * For tray, add suffix -T (e.g. MPM3690GBF-50A-T). TOP MARKING (MPM3690GBF-50A) MPS: MPS prefix YY: Year code WW: Week code M3690-50A: Part number LLLLLLLLL: Lot number M: Module TOP MARKING (MPM3690GBF-50B) MPS: MPS prefix YY: Year code WW: Week code M3690-50B: Part number LLLLLLLLL: Lot number M: Module
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 3 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. PIN-COMPATIBLE PARTS Part Number Output Description MPM3690GBF-20A Dual 13A 4V to 16V input, 0.6 V to 3.3V output, BGA ( 16mmx16mmx5.18mm) package MPM3690GBF-20B Single 26A 4V to 16V input, 0.6V to 3.3V output, BGA ( 16mmx16mmx5.18mm) package MPM3690GBF-30A Dual 18A 4V to 16V input, 0.6V to 3.3 V output, BGA ( 16mmx16mmx5.18mm) package MPM3690GBF-30B Single 36A 4V to 16V input, 0.6V to 3.3 V output, BGA ( 16mmx16mmx5.18mm) package MPM3690GBF-50A Dual 25A 4V to 16V input, 0.6V to 1.8 V output, BGA ( 16mmx16mmx5.18mm) package MPM3690GBF-50B Single 50A 4V to 16V input, 0.6V to 1.8 V output, BGA ( 16mmx16mmx5.18mm) package Order directly from MonolithicPower.com or our distributors. PACKAGE REFERENCE TOP VIEW 1 2 3 GND VOUT1 VOUT2GND GND GND EN1 VINVIN VCC VS2PVS2N VS1N FB2 SS2 NC1 FSET1 RAMP1 RAMP2 MODE SS1 FB1 VS1P SW1 SW2 PG1 PG2 EN2 VSOUT VSOUT NC4 NC2 NC3 4 5 6 7 8 9 10 11 12 A B C D E F G H J K L M FSET2 PMODE
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 4 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. PIN FUNCTIONS Pin Number Name Description A1–A5, B1–B5, C1– C4 VOUT1 Power output 1. Power output pins for channel 1. A6, A7, B6, B7, D1– D4, D9–D12, E1–E4, E10, E11, E12, F1, F2, F3, F6, F7, F10, F11, F12, G1, G3, G7, G10, G12, H1– H7, H9–H12, J1, J5, J8, J12, K1, K5–K8, K12, L1, L12, M1, M12 GND Power ground. GND is the ground of the regulated output voltage (VOUT). A8–A12, B8–B12, C9–C12 VOUT2 Power output 2. Power output pins for channel 2. C5, C8 VS1P, VS2P Positive input of the remote-sense amplifier. Connect these pins to the VOUT remote sense point. D6, C7 VS1N, VS2N Negative input of the remote-sense amplifier. Connect these pins to the output GND remote sense point to enable remote sense. Connect directly to GND to disable the remote sense function. C6, E7 FSET1, FSET2 Frequency set . Connect a resistor between these pins and AGND to configure the switching frequency (f SW) between 400kHz to 1MHz. For the MPM3690-50B, the FSET1 and FSET2 resistors must be the same. D5, D7 FB1, FB2 Feedback voltage. Connect a resistor to these pins between VS1N and VS2N to configure VOUT. This pin is connected to VS1P and VS2P with a 60.4kΩ resistor. E5, D8 SS1, SS2 Soft-start time set ting. Connect a ceramic capacitor to set the soft -start time (tSS). G5, G4 RAMP1, RAMP2 Ramp selection pin . Float these pins to set the internal compensation ramp to high; pull these pins pin low to set the internal compensation ramp to low. E8, F8 VSOUT Not connected (internally floated). Float these pins. F4 MODE Operation mode set. Pull MODE up to VCC for forced continuous conduction mode (FCCM). F5, F9 EN1, EN2 Enable pins. Drive EN pin high to turn the output on, drive it low to turn the output off. Do not float this pin. G2, G11 SW1, SW2 Switching nodes. Float these pins. G6 PMODE Protection mode selection. Connect PMODE to GND for latch -off mode, pull PMODE up to VCC for hiccup mode. G9, G8 PG1, PG2 Power good outputs. The output of the PG pins is an open drain. Pull the PG pins high with a pull-up resistor. H8 VCC Output of the internal power supply . Float this pin or connect it to an external 3.3V power supply to improve efficiency. E6, J6, J7, E9 NC1, NC2, NC3, NC4 Not connected (internally floated). Float these pins. M2–M11, L2–L11, J2, J3, J4, J9, J10, J11, K2, K3, K4, K9, K10, K11 VIN Supply voltage. Connect input voltage between these pins and GND pins.
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 5 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. PIN MAP Table 1: Pins A1–F12 Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function A1 VOUT1 B1 VOUT1 C1 VOUT1 D1 GND E1 GND F1 GND A2 VOUT1 B2 VOUT1 C2 VOUT1 D2 GND E2 GND F2 GND A3 VOUT1 B3 VOUT1 C3 VOUT1 D3 GND E3 GND F3 GND A4 VOUT1 B4 VOUT1 C4 VOUT1 D4 GND E4 GND F4 MODE A5 VOUT1 B5 VOUT1 C5 VS1P D5 FB1 E5 SS1 F5 EN1 A6 GND B6 GND C6 FSET1 D6 VS1N E6 NC1 F6 GND A7 GND B7 GND C7 VS2N D7 FB2 E7 FSET2 F7 GND A8 VOUT2 B8 VOUT2 C8 VS2P D8 SS2 E8 VSOUT F8 VSOUT A9 VOUT2 B9 VOUT2 C9 VOUT2 D9 GND E9 NC4 F9 EN2 A10 VOUT2 B10 VOUT2 C10 VOUT2 D10 GND E10 GND F10 GND A11 VOUT2 B11 VOUT2 C11 VOUT2 D11 GND E11 GND F11 GND A12 VOUT2 B12 VOUT2 C12 VOUT2 D12 GND E12 GND F12 GND Table 2: Pins G1–M12 Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function G1 GND H1 GND J1 GND K1 GND L1 GND M1 GND G2 SW1 H2 GND J2 VIN K2 VIN L2 VIN M2 VIN G3 GND H3 GND J3 VIN K3 VIN L3 VIN M3 VIN G4 RAMP2 H4 GND J4 VIN K4 VIN L4 VIN M4 VIN G5 RAMP1 H5 GND J5 GND K5 GND L5 VIN M5 VIN G6 PMODE H6 GND J6 NC2 K6 GND L6 VIN M6 VIN G7 GND H7 GND J7 NC3 K7 GND L7 VIN M7 VIN G8 PG2 H8 VCC J8 GND K8 GND L8 VIN M8 VIN G9 PG1 H9 GND J9 VIN K9 VIN L9 VIN M9 VIN G10 GND H10 GND J10 VIN K10 VIN L10 VIN M10 VIN G11 SW2 H11 GND J11 VIN K11 VIN L11 VIN M11 VIN G12 GND H12 GND J12 GND K12 GND L12 GND M12 GND
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 6 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. ABSOLUTE MAXIMUM RATINGS (1) Continuous power dissipation (TA = 25°C) (2) Recommended Operating Conditions (3) Operating junction temp (TJ) .... -40°C to +125°C Thermal Resistance (4) θJA θJC Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature , TJ (MAX), the junction -to- ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by P D (MAX) = (T J (MAX) - TA) / θJA. Exceeding the maximum allowable power dissipation can produce an excessive die temperature, and the device may go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on EVM3690-50B-BF-00A, 4 -layer PCB , 10cmx10cm.
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 7 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units VIN Supply Current Supply current (quiescent) IIN EN = 0V, FB = 0.65V, RFREQ = 30kΩ to GND 1.5 2 mA Output Current Limit Output current limit (inductor valley) ILIM_VALLEY Individual phase current limit， fSW = 800kHz, VOUT = 1.2V 24 A Low-side negative current limit ILIM_NEG Individual phase current limit -13 A Frequency and Timer Switching frequency fSW RFREQ = 30kΩ 800 kHz Minimum on time (5) tON_MIN fSW = 800kHz, VOUT = 0.6V 50 ns Minimum off time (5) tOFF_MIN 220 ns Output Over-Voltage and Under-Voltage Protection OVP threshold VOVP 116% 120% 124% VREF UVP threshold VUVP 70% 74% 79% VREF EN Input high voltage VIH_EN 2.15 V Input low voltage VIL_EN 1.20 V Feedback Voltage Feedback accuracy 594 600 606 mV Soft Start Soft-start current ISS 15 20 25 μA Error Amplifier Feedback current IFB VFB = 0.65V 50 100 nA Soft Shutdown Soft shutdown discharge FET RON_DISCH TJ = 25°C 60 120 Ω UVLO VCC under-voltage lockout rising threshold VCCVTH_RISE 2.6 2.75 2.9 V VCC under-voltage lockout falling threshold VCCVTH_FALL 2.3 2.45 2.6 V VCC output voltage VCC 3.1 3.25 3.4 V Power Good (PG) Power good high threshold PGVTH_HI_RISE FB from low to high 88.5% 92.5% 96.5% VREF Power good low threshold PGVTH_LO_RISE FB from low to high 116% 120% 124% VREF PGVTH_LO_FALL FB from high to low 70% 74% 78% VREF Power good sink current capability VPG IPG = 10mA 0.3 V Power good leakage current IPG_LEAK VPG = 3V, TJ = 25°C 1.5 2.5 µA
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 8 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS (continued) VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units Power good low-level output voltage VOL_100 VIN = 0V, pull PG up to 3.3V through a 100kΩ resistor, TJ = 25°C 600 720 mV VOL_10 VIN = 0V, pull PG up to 3.3V through a 10kΩ resistor, TJ = 25°C 700 820 Thermal Protection Thermal shutdown threshold (5) 160 °C Thermal hysteresis threshold (5) 30 °C Note: 5) Guaranteed by sample characterization. Not tested in production. The parameter is tested during parameters characterization.
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 9 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS MPM3690-50A, VIN = 12V, VOUT1 = VOUT2 = 1.2V, COUT1 = COUT2 = 690µF, fSW1 = fSW2 = 500kHz, FCCM, TA = 25°C, unless otherwise noted. -0.2 -0.15 -0.1 -0.05 0.05 0.1 0.15 0.2 4 8 12 16 REGULATION (%) INPUT VOLTAGE (V) Line Regulation One channel IOUT=0A IOUT=12.5A IOUT=25A
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 10 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) MPM3690-50A, VIN = 12V, VOUT1 = VOUT2 = 1.2V, COUT1 = COUT2 = 690µF, fSW1 = fSW2 = 500kHz, FCCM, TA = 25°C, unless otherwise noted. Ripple IOUT1 = IOUT2 =0A Ripple IOUT1 = IOUT2 =25A CH1: VOUT1/AC CH2: VOUT2/AC CH1: VOUT1/AC CH2: VOUT2/AC Start-Up through VIN IOUT1 = IOUT2 = 0A Start-Up through VIN IOUT1 = IOUT2 = 25A CH1: VOUT1 CH2: VOUT2 CH3: VIN R1: IOUT1 CH4: IOUT2 CH1: VOUT1 CH2: VOUT2 CH3: VIN R1: IOUT1 CH4: IOUT2 Shutdown through VIN IOUT1 = IOUT2 = 0A Shutdown through VIN IOUT1 = IOUT2 = 25A CH1: VOUT1 CH2: VOUT2 CH3: VIN R1: IOUT1 CH4: IOUT2 CH1: VOUT1 CH2: VOUT2 CH3: VIN R1: IOUT1 CH4: IOUT2
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 11 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) MPM3690-50A, VIN = 12V, VOUT1 = VOUT2 = 1.2V, COUT1 = COUT2 = 690µF, fSW1 = fSW2 = 500kHz, FCCM, TA = 25°C, unless otherwise noted. Start-Up through EN IOUT1 = 0A Start-Up through EN IOUT1 = 25A CH1: VOUT1 CH2: VEN1 CH3: VPG1 CH4: IOUT1 CH1: VOUT1 CH2: VEN1 CH3: VPG1 CH4: IOUT1 Shutdown through EN IOUT1 = 0A Shutdown through EN IOUT1 = 25A CH1: VOUT1 CH2: VEN1 CH3: VPG1 CH4: IOUT1 CH1: VOUT1 CH2: VEN1 CH3: VPG1 CH4: IOUT1 SCP Entry IOUT1 = 0A SCP Recovery IOUT1 = 0A CH1: VOUT1 CH2: VIN CH3: VPG1 CH4: IOUT1 CH1: VOUT1 CH2: VIN CH3: VPG1 CH4: IOUT1
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 12 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) MPM3690-50A, VIN = 12V, VOUT1 = VOUT2 = 1.2V, COUT1 = COUT2 = 690µF, fSW1 = fSW2 = 500kHz, FCCM, TA = 25°C, unless otherwise noted. SCP Entry IOUT1 = 25A SCP Recovery IOUT1 = 25A CH1: VOUT1 CH2: VIN CH3: VPG1 CH4: IOUT1 CH1: VOUT1 CH2: VIN CH3: VPG1 CH4: IOUT1 SCP Steady State Load Transient 6.25A load step, 10A/µs, COUT = 10 x 47µF ceramic + 220µF POSCAP, CFF = 33nF, low ramp CH1: VOUT1 CH2: VIN CH3: VPG1 CH4: IOUT1 CH1: VOUT1/AC CH4: IOUT1 Load Transient 12.5A Load Step, 10A/µs, COUT = 10 x 47µF ceramic + 220µF POSCAP, CFF = 33nF, high ramp CH1: VOUT1/AC CH4: IOUT1
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 13 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) MPM3690-50B, VIN = 12V, VOUT = 1.2V, COUT = 1380µF, f SW = 500kHz, FCCM, TA = 25°C, unless otherwise noted. 30 40 50 60 70 80 90 100 MAX LOAD CURRENT (A) AMBIENT TEMPERATURE (℃) Thermal Derating VIN = 12V，1m/s with air flow VOUT=1.8V, FSW=600K VOUT=1.2V, FSW=500K VOUT=0.8V, FSW=400K
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 14 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) MPM3690-50B, V IN = 12V, V OUT = 1.2V, C OUT = 1380µF, f SW = 500kHz, FCCM, T A = 25°C, unless otherwise noted. Ripple IOUT = 0A, COUT = 20 x 47µF ceramic + 2 x 220µF POSCAP Ripple IOUT = 50A, COUT = 20 x 47µF ceramic + 2 x 220µF POSCAP CH1: VOUT/AC CH2: VIN CH3: VPG CH4: IOUT CH1: VOUT/AC CH2: VIN CH3: VPG CH4: IOUT Start-Up through VIN IOUT = 0A Start-Up through VIN IOUT = 50A CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT Shutdown through VIN IOUT = 0A Shutdown through VIN IOUT = 50A CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 15 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) MPM3690-50B, V IN = 12V, V OUT = 1.2V, C OUT = 1380µF, f SW = 500kHz, FCCM, T A = 25°C, unless otherwise noted. Start-Up through EN IOUT = 0A Start-Up through EN IOUT = 50A CH1: VOUT CH2: VEN CH3: VPG CH4: IOUT CH1: VOUT CH2: VEN CH3: VPG CH4: IOUT Shutdown through EN IOUT = 0A Shutdown through EN IOUT = 50A CH1: VOUT CH2: VEN CH3: VPG CH4: IOUT CH1: VOUT CH2: VEN CH3: VPG CH4: IOUT SCP Entry IOUT = 0A SCP Recovery IOUT = 0A CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 16 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) MPM3690-50B, V IN = 12V, V OUT = 1.2V, C OUT = 1380µF, f SW = 500kHz, FCCM, T A = 25°C, unless otherwise noted. SCP Entry IOUT = 50A SCP Recovery IOUT = 50A CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT SCP Steady State Load Transient 12.5A load step, 10A/µs, COUT = 20 x 47µF ceramic + 2 x 220µF POSCAP, CFF = 33nF, low ramp CH1: VOUT CH2: VIN CH3: VPG CH4: IOUT CH1: VOUT/AC CH4: IOUT Load Transient 25A load step, 10A/µs, COUT = 20 x 47µF ceramic +2 x 220µF POSCAP, CFF = 33nF, high ramp CH1: VOUT/AC CH4: IOUT
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 17 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. FUNCTIONAL BLOCK DIAGRAMS 0.22µH 0.1µF1µF TK_MST Power Control BST1 60.4kΩ 90.9kΩ VOUT1 GND FB1 VS1P VIN 4V to 16V VOUT1 1.0V/25A VS1N VDRV1 RAMP1 PG1 EN1 MODE PMODE PASS_MST PGND AGND FSET1 SS1 ILIM1 ISUM1 SET1 VCC 0.22µH 0.1µF1µF TK_SLV Power Control BST2 60.4kΩ VIN VOUT2 GND FB2 VS2P VS2N VDRV2 RAMP2 PG2 EN2 MODE PMODE PASS_SLV PGND AGND FSET2 SS2 ILIM2 ISUM2 SET2 VCC VCC 2.2Ω 2.2Ω 11kΩ11kΩ 11kΩ 75kΩ 75kΩ 1µF+ 2 x 0.1µF 1µF + 2 x 0.1µF 1µF 11kΩ VOUT2 1.0V/25A 90.9kΩ VSOUT SW1 SW2 VIN Figure 2: MPM3690-50A Functional Block Diagram
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 18 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. FUNCTIONAL BLOCK DIAGRAMS (continued) 0.22µH 0.1µF1µF TK_MST Power Control BST1 60.4kΩ 90.9kΩ VIN VOUT1 GND FB1 VS1P VIN 4V to 16V VOUT 1.0V/50A VS1N VDRV1 RAMP1 PG1 EN1 MODE PMODE PASS_MST PGND AGND FSET1 SS1 ILIM1 ISUM1 SET1 VCC 0.22µH 0.1µF1µF TK_SLV Power Control BST2 60.4kΩ VIN VOUT2 GND FB2 VS2P VS2N VDRV2 RAMP2 PG2 EN2 MODE PMODE PASS_SLV PGND AGND FSET2 SS2 ILIM2 ISUM2 SET2 VCC VCC 2.2Ω 2.2Ω 11kΩ11kΩ 11kΩ 75kΩ 75kΩ 1µF + 2 x 0.1µF 1µF + 2 x 0.1µF 1µF SW1 VSOUT SW2 Figure 3: MPM3690-50B Functional Block Diagram
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 19 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. OPERATION Constant-On-Time (COT) Operation The MPM3690-50 is a dual 25A or single 50A output power module that integrates two inductors and two monolithic power ICs. The MPM3690-50 utilizes constant-on-time (COT) control to provide a fast transient response. Multi-Phase Operation The MPM3690-50B adopts multi -phase constant-on-time (MCOT) control. MCOT control configures the two ICs for master and slave functionality. The slew rate of the supply voltage (VIN) during start-up must be greater than 2V/ms for MPM3690-50B. MCOT Operation (Master) The master phase performs the follo wing functions: Generates the SET signals. Manages start -up, shutdown, and all protections. Monitors for any fault alerts from the slave phases through the PG pin. Starts the first on pulse. Starts the on pulse when receiving RUN and SET signals. Determines the on pulse width of its own phase based on the per -phase and total current. Sends the PASS/TAKE signal. MCOT Operation (Slave) The slave phase performs the following functions: Takes the SET signal from the master. Sends over -voltage (OV), under -voltage (UV), and over -temperature (OT) alerts to the master through the PG pin. Starts the on pulse when receiving RUN and SET signals. Determines the on pulse width of its own phase based on the per -phase and total current. Sends the PASS/TAKE signal. MCOT control enables the MPM3690 -50B to respond to a load step transient much faster than traditional current mode control schemes. When a load step occurs, the FB signal is below the internal reference ; therefore, the SET signal is generated more frequently than it would be during steady state to respond to the load transient. Depending on the load transient step size and slew rate, the SET signal can be generated with a minimum 50ns interval (i.e., the next phase can be turned on as fast as 50ns after the previous phase to provide ultra -fast load transient response). RAMP Compensation The MPM3690-50 provides internal RAMP compensation to support various types of output capacitors. The ramp value is selected with the RAMP pin. Float the RAMP pin for large ramp compensation, or connect the RAMP pin to ground for small ramp compensation. The RAMP signal is superimposed onto the FB signal. When the superimpose d RAMP + FB signal reaches the internal reference signal, the MPM3690-50 generates a new SET signal (which generates a PWM on pulse) . A larger ramp value reduces system jitter, but slows the load transient response. The ramp value should be selected based on the application and design target. Mode Selection The MPM3690-50 only supports forced continuous conduction mode (FCCM) operation. FCCM can be enabled by setting the MODE pin to logic high. Soft Start The MPM3690-50A features an adjustable soft- start time (tSS) for both output channels. The soft start time can be configured by connecting a soft-start capacitor (CSS) between the SS pin s and GND. The soft-start time can be calculated with Equation (1): ss SSt (ms) 30 C ( F) (1) Switching Frequency The MPM3690-50A features an adjustable switching frequency (fSW) for both output channels. For the MPM3690-50B, the frequency resistance (RFREQ) for both channels must be the same. The switching frequency (fSW) can be configured by connecting a resistor between the FREQ pin and GND. fSW can be calculated with Equation (2):
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 21 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. clamped low, even though it is tied to an external DC source through a pull -up resistor. Figure 5 shows the relationship between the PG voltage (VPG) and the pull-up current (IPG). 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 IPG ( mA) VPG (V) Figure 5: PG Current vs. PG Voltage
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 22 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved.
APPLICATION INFORMATION
Selecting the Input Capacitor The step-down converter has a discontinuous input current, and requires a capacitor to supply the AC current to the converter while maintaining the DC input voltage. Use ceramic capacitors for best performance. Place the input capacitors as close to the VIN pin as possible. The capacitance can vary significantly with temperature. Capacitors with X5R and X7R ceramic dielectrics are recommended because they are fairly stable across a wide temperature range. The capacitors must also have a ripple current rating that exceeds the converter’s maximum input ripple current. Estimate t he input ripple current with Equation (4): V1(V VII IN OUT IN OUT OUTCIN (4) The worst-case condition occurs at VIN = 2 x VOUT, calculated with Equation (5): II OUT CIN (5) For simplification, choose an input capacitor with an RMS current rating that exceeds half the maximum load current. The input capacitance determines the converter input voltage ripple. Select a capacitor that meets any input voltage ripple requirements. Estimate t he input voltage ripple (∆VIN) with Equation (6): (1 )OUT OUT OUT IN SW IN IN IN (6) The worst-case condition occurs at VIN = 2 x VOUT, calculated with Equation 7: OUT IN SW IN IV fC (7) Selecting the Output Capacitor The output capacitor maintain s the DC output voltage. The output voltage ripple can be estimated with Equation (8): 1(1 ) ( ) 8 OUT OUT OUT ESR SW IN SW OUT When using ceramic capacitors, the capacitance dominates the impedance at the switching frequency and causes majority of the output voltage. For simplification, calculate the output voltage ripple (∆VOUT) with Equation (9): 2 (1 )8 OUT OUT OUT SW OUT IN (9) When using capacitors with a larger ESR (e.g. POSCAP, OSCON), the ESR dominates the impedance at the switching frequency. The output voltage ripple is determined by the ESR. For simplification, the output voltage ripple can be estimated with Equation (10): (1 )OUT OUT OUT ESR SW IN (10) Low VIN Applications For low V IN applications (3V < V IN < 4V), an external VCC bias power supply is needed. The external bias VCC must be above 2.9V (the VCC UVLO rising threshold maximum value).
MPM3690-50A/B, 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 23 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. PCB Layout Guidelines VIN Place s ufficient decoupling capacitors as close as possible to the VIN and GND pins. Sufficient GND vias should be placed around the GND pad of the decoupling capacitors. Avoid placing sensitive signal traces close to the input copper plane and/or vias without sufficient ground shielding. A minimum of four 22µF/25V ceramic capacitors are recommended at the input channel to provide sufficient decoupling. VOUTx Each VOUTx pin should be connected together on a copper plane. Place sufficient vias near the VOUTx pads to provide a current path with minimal parasitic impedance. For the MPM3690- 50B, combine all the corresponding VOUT copper planes. GND Connect all GND pins of the module on a copper plane. Place sufficient vias close to the GND pins to provide a current return path with minimal thermal resistance and parasitic impedance. VSxP and VSxN For the MPM3690-50A, route each pair of VSxP/N pins as differential signals. For the MPM3690-50B, connect FB1 to FB2 , then connect all of the VSxN pins. Avoid routing VSxP/N traces close to the input plane and high- speed signals. GND VOUT1 VOUT2GND GND GND EN1 VINVIN VCC VS2PVS2N VS1N FB2 SS2 NC1 fSET1 RAMP1RAMP2 MODE SS1 FB1 VS1P SW1 SW2PG1PG2 EN2VSOUT VSOUT NC4 NC2 NC3 fSET2 PMODE CO1 CO2 CO3 CO4 CIN1 CIN2 CIN3 CIN4 VIN Figure 6: Recommended PCB Layout
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 26 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved.
PACKAGE INFORMATION
BGA (16mmx16mmx5.18mm)
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE MPM3690-50 Rev. 1.0 MonolithicPower.com 27 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. CARRIER INFORMATION Part Number Package Description Quantity/ Reel Quantity/ Tray Quantity/ Tube Reel Diameter Carrier Tape Width Carrier Tape Pitch MPM3690GBF- 50A BGA (16mmx16mmx5.18mm) N/A 90 N/A N/A N/A N/A MPM3690GBF- 50B Pin1 1 1 1 1 ABCD ABCD ABCD ABCD Feed Direction
MPM3690-50A/B – 16V, DUAL 25A OR SINGLE 50A POWER MODULE Notice: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third-party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MPM3690-50 Rev. 1.0 MonolithicPower.com 28 5/24/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved.
REVISION HISTORY
Revision # Revision Date Description Pages Updated 1.0 5/24/2021 Initial Release -