VPN12AD02-FU

VPN12AD02-FU CYNTEC | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 22

Technical content

Rev. P05 1 VPN12AD02-FU POL MODULE Buck-Boost, High Efficiency POL Module FEATURES:  High Density Fully Integration Module  Constant Current Mode: IOUT Maximum 2A Output Voltage Range: 3V to 40V Maximum Output Power: 40W Input Voltage Range from 5.5V to 36V  Constant Voltage Mode: IOUT Maximum 4A Output Voltage Range: 12V Maximum Output Power: 48W Input Voltage Range from 8V to 36V  Output LED OVP, Open, Short Protection  Analog and PWM dimming  LED and Input Current Dedicated Sense  Switching Frequency 350kHz  Spread Spectrum Frequency Modulation  Adjustable Soft Start  Automotive AEC Qualified  Compact Size: 15mm x 15mm x 8.2mm  Wettable Flank Package  Pb-free for RoHS compliant  MSL 3, 260C Reflow APPLICATIONS:  Automotive LED Headlanp Lighting  General purpose Constant Current LED driver.  VOUT 12V Buck-Boost application GENERAL DESCRIPTION: The VPN12AD02-FU is non-isolated dc-dc converters. The PWM switching regulator, high frequency power inductor, and most of components are integrated in one hybrid package. The VPN12AD02-FU is a synchronous MOSFET DC/DC Module with built in protection features. This concept is beneficial for driving high power LEDs with maximum system efficiency. The VPN12AD02-FU offers both analog and digital (PWM) dimming. A built in spread spectrum switching frequency modulation and the forced continuous current regulation mode improve the overall EMC behavior. The adjustable soft start feature limits the current peak as well as voltage overshoot at start-up. The VPN12AD02-FU is suitable for using in the harsh automotive environment. The low profile and compact size package (15mm × 15mm x 8.2mm) is suitable for automated assembly by standard surface mount equipment. VPN12AD02-FU is Pb-free and RoHS compliance. TYPICAL APPLICATION CIRCUIT & PACKAGE SIZE: VOUTVPN12AD02-FUVINPGNDSoft_StartFREQINUVLO/ENINOVLOVFBFBLFBHIIN1IIN2IVCCEF1EF2PWMISETDigital DimmingAnalog DimmingTo IVCCSSPCompVINVOUT FIGURE.1 TYPICAL APPLICATION CIRCUIT FIGURE.2 HIGH DENSITY uPOL MODULE 8.2mm Max 15mm 15mm

Rev. P05 2 VPN12AD02-FU ORDER INFORMATION: Part Number Ambient Temp. Range (°C) Package (Pb-Free) MSL Note VPN12AD02-FU -40 ~ +105 QFN Level 3 - Order Code Packing Quantity VPN12AD02-FU Tray 390 PIN CONFIGURATION: VIN(46)VIN(47)VIN(48)VIN(49)VIN(50)VIN(51)GND(52)GND(53)GND(54)GND(55)GND(56)GND(57)GND(58)GND(59)GND(60) VIN(45) VIN(44) IVCC(43) SW1(42) SW1(41) SW1(40) SW1(39) SW1(38) SW1(37) SW1(36) SW1(35) SW1(34) INOVLO(33) EN(32) SSP(31) IN1(28)GND(29)GND(30)IN2(27)SS(26)FREQ(25)COMP(24)EF1(23)EF2(22)PWMI(21)SET(20)FBL(19)FBH(18)FB(17)VOUT(16) VOUT(15) VOUT(14) VOUT(13) SW2(12) SW2(11) SW2(10) SW2(9) SW2(8) SW2(7) SW2(6) SW2(5) SW2(4) GND(3) GND(2) GND(1) GND(63) VIN(61) VOUT(65) GND(69) GND(62) GND(64) GND(66) GND(68) GND(67) TOP VIEW

Rev. P05 3 VPN12AD02-FU PIN CONFIGURATION: Symbol # Type Description GND 1~3, 29, 30, 52~60, 62~64, 66~69 PWR Power ground SW2 4~12 PWR The boost side switching node VOUT 13~16, 65 PWR Power output pin. FB 17 Analog I Output over voltage protection function. FBH 18 Analog I Output current Feedback Positive FBL 19 Analog I Output current Feedback Negative SET 20 Analog I Analog dimming input pin PWMI 21 Digital I Digital dimming input pin EF2 22 Digital O An open drain output for Fault information EF1 23 Digital O An open drain output for Fault information COMP 24 Analog O Connect R and C network to pin as Compensator FREQ 25 Analog O Connect an external resistor to GND to set frequency. SS 26 Analog O Connect a capacitor to GND to set soft start ramp. IN2 27 Analog I Inverting Input (-), connect to VIN if input current monitor is not needed. IN1 28 Analog I Non Inverting Input (+), connect to VIN if input current monitor is not needed. SSP 31 Digital I High active for the spread Spectrum function. EN 32 Analog I Enable function with under voltage threshold capability via external components. INOVLO 33 Analog I Connect to GND directly SW1 34~42 PWR The buck side switching node IVCC 43 Analog O Used for internal biasing and gate driver supply. Bypass with external capacitor 16V/10uF/X7R close to the pin. VIN 44~51, 61 PWR Power input pin

Rev. P05 4 VPN12AD02-FU ELECTRICAL SPECIFICATIONS: CAUTION: Do not operate at or near absolute maximum rating listed for extended periods of time. This stress may adversely impact product reliability and result in failures not covered by warranty. NOTES: 1. Rth(jchoke-a) is measured with the component mounted on an effective thermal conductivity test board on 0 LFM condition. The test board size is 80mm×80mm×1.6mm with 4 layers 2oz per layer. The test condition is complied with JEDEC EIJ/JESD 51 Standards. Parameter Description Min. Typ. Max. Unit  Absolute Maximum Ratings VIN, IN1, IN2, FBH, FBL -0.3 - 60 V IVCC -0.3 - 6 V IN1-IN2, FBH-FBL -0.5 - 0.5 V SW1, SW2 -1 - 60 V GND -0.3 - 0.3 V EN/INUVLO -0.3 - 60 V PWMI, SSP, VFB, INOVLO, EF1, EF2, SET -0.3 - 5.5 V COMP, SS, FREQ -0.3 - 3.6 V Tc Case Temperature of Inductor -40 - +135 °C Tj Junction Temperature, Main IC -40 - +150 °C Tstg Storage Temperature -40 - +135 °C Ta Ambient Tamperture -40 - +105 °C  Recommendation Operating Ratings for Constant Current Application VIN Device Extended Supply Voltage Range +5.5 - +36 V POWER Output Power Range 0 - 40 W VOUT Adjuested Output Voltage +3 - +40 V Ta Ambient Tamperture -40 - +105 °C  Recommendation Operating Ratings for Constant Voltage Application VIN Device Extended Supply Voltage Range +8 - +36 V POWER Output Power Range 0 - 48 W VOUT Adjuested Output Voltage - +12 - V Ta Ambient Tamperture -40 - +105 °C  Thermal Information Rth(jchoke-a) Thermal resistance from junction to ambient. - 21 - °C/W

Rev. P05 5 VPN12AD02-FU ELECTRICAL SPECIFICATIONS: (Cont.) Conditions: TA = 25 ºC, unless otherwise specified. For CC mode, VIN = 12V, Cin =10uF/50V/1210/X7R x 2, Cout = 10uF/50V/1210/X7R x 2. For CV mode, VIN = 12V, VOUT=12V, Cin =10uF/X7R x 2 + 82uF EP-CAP, Cout = 22uF/X7R x 2 + 270uF EP-CAP Symbol Parameter Conditions Min. Typ. Max. Unit  Input Characteristics VVIN(ON) Input Voltage Startup VIN increasing; VEN/INUVLO = HIGH; - - 4.7 V VVIN(OFF) Input Undervoltage switch OFF VIN decreasing; VEN/INUVLO = HIGH; - - 4.5 V IVIN(ACTIVE) Device operating current ACTIVE mode; CC mode Fsw=350 KHz; VPWMI = 0 V; - 4.4 6 mA IVIN(ACTIVE) Device operating current ACTIVE mode; CV mode Fsw=350 KHz; VOUT=12V - 25 - mA IVIN(SLEEP) VIN Sleep mode supply current VEN/INUVLO = 0 V; VIN = 13.5 V; VIVCC = 0 V; - 1.5 - uA  Regulator Characteristics VIIN1-IIN2 Input Current Sense Threshold - 50 - mV VFBH-FBL VFBH - VFBL Threshold VSET = 2V; 145 150 155 mV VFBH-FBL_10 VFBH - VFBL Threshold at analog dimming 10% VSET = 0.32 V; CC mode - 15 - mV DBOOST_MAX Maximum Boost Duty Cycle Fsw= 300 kHz; - 91 - % FSW Switching Frequency Tj = 25°C; RFREQ= 30 kΩ; - 350 - kHz FDEV Frequency Deviation SSP=HIGH - +/-16 - % ΔVOUT / VOUT Line regulation accuracy VIN = 8V to 24V; CV mode VOUT = 12V, IOUT = 2A - 1.0 - % ΔVOUT / VOUT Load regulation accuracy IOUT = 0A to 2A; CV mode VIN = 12V, VOUT = 12V - 0.5 - %

Rev. P05 6 VPN12AD02-FU ELECTRICAL SPECIFICATIONS: (Cont.) Conditions: TA = 25 ºC, unless otherwise specified. For CC mode, VIN = 12V, Cin =10uF/50V/1210/X7R x 2, Cout = 10uF/50V/1210/X7R x 2. For CV mode, VIN = 12V, VOUT=12V, Cin =10uF/X7R x 2 + 82uF EP-CAP, Cout = 22uF/X7R x 2 + 270uF EP-CAP Symbol Parameter Conditions Min. Typ. Max. Unit  Control Input Characteristics VPWI_ON PWMI Turn On Threshold 2 - - V VPWI_OFF PWMI Turn Off Threshold - - 0.8 V VSSP_ON Rising threshold voltage 2 - - V VSSP_OFF Falling threshold voltage - - 0.8 V  Fault Protection VEN/INUVLOTH Input Under voltage Falling Threshold 1.55 1.75 1.95 V VEN/INUVLO_HYS Input Over voltage Threshold Hysteresis - 90 - mV VVFB_VOTH VFB Over Voltage Threshold 1.41 1.46 1.51 V VVFB_VOTH _HYS VFB Over Voltage Threshold Hysteresis - 40 - mV VVFB_S2G Short to GND Threshold VFB decreasing 0.52 0.563 0.6 V TJ_SD Over Temperature Shutdown - 175 - °C TJ_SD_HYST Over Temperature Shutdown Hysteresis - 10 - °C

Rev. P05 7 VPN12AD02-FU TYPICAL PERFORMANCE CHARACTERISTICS: Constant Current Mode Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 75mm×58mm, 2 layers 2oz. VIN = 12V, Cin =10uF/50V/1210/X7R x 2, Cout = 10uF/50V/1210/X7R x 2. FIG.3 EFFICIENCY V.S. VOUT (VIN=12V, IOUT=2A. The Efficiency includes the output current sense resistor) FIG.4 EFFICIENCY V.S. VOUT (VIN=12V, IOUT=1A. The Efficiency includes the output current sense resistor) FIG.5 DE-RATING CURVE (VIN=12V, VOUT=24V) FIG.6 DE-RATING CURVE (VIN=12V, VOUT=40V)

Rev. P05 8 VPN12AD02-FU TYPICAL PERFORMANCE CHARACTERISTICS: Constant Voltage Mode Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 75mm×58mm, 2 layers 2oz. VOUT=12V, Cin =10uF/X7R x 2 + 82uF EP-CAP, Cout = 22uF/X7R x 2 + 270uF EP-CAP FIG.7 EFFICIENCY V.S. VOUT (VOUT=12V) FIG.8 DE-RATING CURVE (VIN=12V, VOUT=12V, Load=4A) FIG.9 Enable on (VIN=12V, VOUT=12V, Load=0A) FIG.10 EFFICIENCY V.S. VOUT (VIN=12V, VOUT=12V, Load=2A) FIG.11 Load Transient (VIN=12V, VOUT=12V, Load=0 to 2A) FIG.12 Load Transient (VIN=12V, VOUT=12V, Load=2A to 4A)

Rev. P05 9 VPN12AD02-FU TYPICAL PERFORMANCE CHARACTERISTICS: Constant Voltage Mode Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 75mm×58mm, 2 layers 2oz. VOUT=12V, Cin =10uF/X7R x 2 + 82uF EP-CAP, Cout = 22uF/X7R x 2 + 270uF EP-CAP FIG.13 Enable on (VIN=24V, VOUT=12V, Load=0A) FIG.14 Enable on (VIN=24V, VOUT=12V, Load=2A) FIG.15 Load Transient (VIN=24V, VOUT=12V, Load=0 to 2A) FIG.16 Load Transient (VIN=24V, VOUT=12V, Load=2A to 4A) FIG.17 Enable on (VIN=36V, VOUT=12V, Load=0A) FIG.18 Enable on (VIN=36V, VOUT=12V, Load=2A)

Rev. P05 10 VPN12AD02-FU TYPICAL PERFORMANCE CHARACTERISTICS: Constant Voltage Mode Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 75mm×58mm, 2 layers 2oz. VOUT=12V, Cin =10uF/X7R x 2 + 82uF EP-CAP, Cout = 22uF/X7R x 2 + 270uF EP-CAP FIG.19 Load Transient (VIN=36V, VOUT=12V, Load=0 to 2A) FIG.20 Load Transient (VIN=36V, VOUT=12V, Load=2A to 4A) FIG.21 Enable on (VIN=8V, VOUT=12V, Load=0A) FIG.22 Enable on (VIN=8V, VOUT=12V, Load=2A) FIG.23 Load Transient (VIN=8V, VOUT=12V, Load=0 to 2A) FIG.24 Load Transient (VIN=8V, VOUT=12V, Load=2A to 4A)

Rev. P05 11 VPN12AD02-FU APPLICATIONS INFORMATION: Reference Circuit for General Application: VOUTVPN12AD02-FUVINPGNDSoft_StartFREQINUVLO/ENINOVLOVFBFBLFBHIIN1IIN2IVCCEF1EF2PWMISETDigital DimmingAnalog DimmingTo IVCCSSPCompVINVOUTRCS 150mΩR1 30kΩR2 10kΩR6100kΩR5100kΩCSOFT_START 22nFRFREQ 30kΩCIVCC 10uFCcomp 22nFRVFBH 45.3kΩRVFBL 1.5kΩRIN OptionCIN 10uF x 2+ 0.1uFCOUT 10uF x 2+ 0.1uF FIG.25 Constant Current Mode, ILED=1A, Fsw=350kHz Application Circuit. FIG.26 Constant Voltage Mode, VOUT=12V, Fsw=350kHz Application Circuit.

Rev. P05 12 VPN12AD02-FU Switching Frequency Setup: The switching frequency can be set from 200 kHz to 400 kHz by an external resistor connected from the FREQ pin to GND. Select the switching frequency according to the following approximate formulas. 46023FSW[kHz]()1.25RFREQ[kΩ] =. FIG.27 Switching Frequency vs Frequency Select Resistor. LED Constant Current Setting in Constant Current Mode VFBH-FBL typical value is 150mV. Set the LED current with an external resistor according to the following approximate formulas. ILED =VFBH-FBLRCS VOUTRCSGNDFBLFBHILED FIG.28 Current Setting in Constant Current Mode

Rev. P05 13 VPN12AD02-FU VOUT Voltage Setting in Constant Voltage Mode: For a voltage regulator, the output voltage can be set by selecting the values RFB1, RFB2 according to the following equation. IFBL value is about 30uA . VOUT =VFBH-FBLRFB1(IFBL) RFB2 +VFBH-FBL. RFB2VOUTRFB1GNDFBLFBHIFBL FIG.29 VOUT Voltage Setting in Constant Voltage Mode Input Voltage UVLO and Current Limitation: Input under voltage shutdown levels EN/INUVLO can both be defined through an external resistor divider. The two inputs (IIN1, IIN2) can be used to limit the Input current. IINmax. If the input current limitation is not used, it needs to short IIN1 and IIN2 to VIN and short RIN. Following are the equations and figure for these protections. 10kΩ is suggested for R2. UVth =R1R2 (+) VEN/INUVLOTH1. IINmax =RINVIIN1-IIN2 FIG.30 Input Voltage/Current Protection

Rev. P05 14 VPN12AD02-FU Output Protection: The VFB pin measures the VOUT to detect the protection of short to ground, open load and output overvoltage. The Fault pins of EF1 and EF2 diagnostic truth table are as following. FIG.31 VFB Protection Pin Fault Condition EF1 EF2 Gate Driver IVCC No Fault occur H H Switching Active Output over voltage H L L Active Output short circuit L H L Active Over temperature L L L Shutdown FIG.32 Diagnostic Truth Table Overvoltage Protection: The pin VFB rise over the threshold voltage VVFB_OVTH overvoltage protection via VFB. A voltage divider between VOUT, VFB pin is used to adjust the overvoltage protection threshold as following equation. 1.5kΩ is suggested for RVFBL. RVFBH + RVFBLVOUT_OVP = VVFB_OVTHRVFBL.( ) Short Circuit Protection: The VFB pin falls below the VVFB_S2G short circuit threshold is ignored until the soft start finishes. A voltage divider between VOUT, VFB pin is used to adjust the application short circuit thresholds as following equation. 1.5kΩ is suggested for RVFBL. VLED_SHORT = VVFB_S2GRVFBH + RVFBLRVFBL( ).

Rev. P05 15 VPN12AD02-FU Digital Dimming: The PWMI pin can be fed with a pulse width modulated (PWM) signals, this enables when HIGH and disables when LOW the gate drivers of the main switches. To avoid unwanted output overshoots due to not soft start assisted startups, PWM dimming in LOW state should not be used to suspend the output current for long time intervals. To stop in a safe manner EN/INUVLO=LOW can be used. Following shows the timing diagram of LED PWM dimming and start up behavior example. FIG.33 Timing Diagram LED Dimming and Start up behavior example Analog Dimming: The analog dimming feature SET pin can adjust the average load current level via the control of the feedback error Amplifier voltage (VFBH-FBL). The VSET range where analog dimming is enabled is from 200 mV to 1.5 V. The linear average output current can be adjusted by controlling the voltage at the SET pin between 0.2 V and 1.4 V. The mathematical relation is given as following equation.

Rev. P05 16 VPN12AD02-FU ILED =VSET - 200mV8 RFB. If VSET is 200 mV (typ.) the LED current is only determined by the internal offset voltages of the comparators. To assure the switching activity is stopped and IOUT = 0, VSET has to be < 100 mV. FIG.34 Analog Dimming Soft Start Setting: The soft start ramp is defined by a capacitor placed at the Soft_Start pin. Selection of the capacitor can be done according to the following approximate formula. Vss_th_eff is the soft start effectiveness threshold that depends on load condition. Its value is about 0.7 V for the buck mode and 1.4 V for the boost mode Vss_th_effTSOFT_START = CSOFT_START26uA.

Rev. P05 17 VPN12AD02-FU Layout Example Following figures are the layout suggestion. Must connect FBH and FBL to inside of sense resistor.Put output capacitor close to modulePut input capacitor close to modulePut external components close to module FIG.35 First layer (Top layer) If possible, make second layer as the power ground for shielding. FIG.36 Second layer

Rev. P05 18 VPN12AD02-FU Other trace can be routed in third layer. FIG.37 Third layer If possible, make fourth layer as the power ground for shielding. FIG.38 Fourth layer (bottom layer)

Rev. P05 19 VPN12AD02-FU REFLOW PARAMETERS: Lead-free soldering process is a standard of electronic products production. Solder alloys like Sn/Ag, Sn/Ag/Cu and Sn/Ag/Bi are used extensively to replace the traditional Sn/Pb alloy. Sn/Ag/Cu alloy (SAC) is recommended for this power module process. In the SAC alloy series, SAC305 is a very popular solder alloy containing 3% Ag and 0.5% Cu and easy to obtain. Following figure shows an example of the reflow profile diagram. Typically, the profile has three stages. During the initial stage from room temperature to 150°C, the ramp rate of temperature should not be more than 3°C/sec. The soak zone then occurs from 150°C to 200°C and should last for 60 to 120 seconds. Finally, keep at over 217°C for 60 seconds limit to melt the solder and make the peak temperature at the range from 240°C to 250°C. It is noted that the time of peak temperature should depend on the mass of the PCB board. The reflow profile is usually supported by the solder vendor and one should adopt it for optimization according to various solder type and various manufacturers’ formulae. FIG.39 Recommendation Reflow Profile

Rev. P05 20 VPN12AD02-FU PACKAGE OUTLINE DRAW: Unit:mm Bottom View D E A 14.8 15 15.2 8.2 - - 1.00.5 1.050.95 0.550.45 14.8 15 15.2 Top View Side View 3.0 3.052.95 ZE e Lp b1 Lp ZE PIN1

Rev. P05 21 VPN12AD02-FU LAND PATTERN REFERENCE: 0.00 0.000.250.551.05 1.35 1.85 2.15 2.65 2.95 3.45 3.75 4.25 4.55 5.05 5.35 5.85 6.50 0.25 0.55 1.05 1.35 1.85 2.15 2.65 2.95 3.45 3.75 4.25 4.55 5.05 5.35 5.85 6.50 All around R0.05~0.1 2.70 1.50 5.70 1.50 5.70 2.70 8.00 8.00 PACKAGE OUTLINE 8.008.00 TOP VIEW.TYPICAL RECOMMENDED LAND PATTERN 0.00 0.000.200.601.00 1.40 1.80 2.20 2.60 3.00 3.40 3.80 4.20 4.60 5.00 5.40 5.80 6.55 0.20 0.60 1.00 1.40 1.80 2.20 2.60 3.00 3.40 3.80 4.20 4.60 5.00 5.40 5.80 6.55 5.65 2.75 1.45 1.45 2.75 5.65 7.95 7.95 7.957.95 PACKAGE OUTLINE TOP VIEW.STENCIL PATTERN WITH SQUARE PADS

Rev. P05 22 VPN12AD02-FU REVISION HISTORY: Date Revision Changes

2019.05.13 P00 Release the preliminary spec

2019.05.27 P01 Add the application information and reflow parameters

2019.06.03 P02 Modify the application information and typical performance

2019.06.05 P03 Modify the recommendation operating range

2019.08.14 P04 Modify the pin configuration, the package outline and electrical

2019.12.02 P05 Add the constant voltage mode application and reorganize pin 1

place.