BD90620EFJ-CE2

Datasheet Input Voltage 3.5 V to 36 V Output SW Current 4 A / 2.5A / 1.25A 1ch Step-Down Switching Regulator BD906xx-C series Key Specifications General Description  Input Voltage Range : 3.5 V to 36 V (Initial startup is over 3.9 V)  Output Voltage Range : 0.8 V to VIN  Output Switch Current : 4 A / 2.5 A / 1.25 A (Max)  Switching Frequency : 50 kHz to 600 kHz  Reference Voltage Accuracy :±2% (-40 °C to +125 °C)  Shutdown Circuit Current : 0 µA (Typ)  Operating Temperature Range(Ta) : -40 °C to +125 °C BD906xx-C series is a step-down switching regulator with integrated POWER MOS FET and have the capability to withstand high input voltage, providing a free setting function of operating switching frequency with external resistor. This switching regulator features a wide input voltage range (3.5 V to 36 V, Absolute maximum 42 V) and operating temperature range (-40 °C to +125 °C). Furthermore, an external synchronization input pin enables synchronous operation with external clock. Package Features W(Typ) x D(Typ) x H(Max) 9.395mm x 10.540mm x 2.005mm 4.90mm x 6.00mm x 1.00mm HRP7 HTSOP-J8 (Note 1)  AEC-Q100 Qualified  Integrated Pch POWER MOS FET  Low Dropout: 100 % ON Duty Cycle  External Synchronization Function  Soft Start Function: 1.38 ms (fSW = 500 kHz)  Current Mode Control  Over Current Protection  Low Supply Voltage Error Prevention  Thermal Shut Down Protection  Short Circuit Protection  High power HRP7 package mounted  Compact and High power HTSOP-J8 package mounted  Load dump up to 42 V. (Note 1 : Grade 1) HRP7 HTSOP-J8 Applications  Automotive Battery Powered Supplies (Cluster Panels, Car Multimedia)  Industrial / Consumer Supplies  Other electronic equipment Typical Application Circuit L1 PVIN SW VO D1 VIN CO R1 C2 VIN Cbulk CIN FB RT VEN / SYNC CRT RRT EN / SYNC GND ○Product structure：Silicon monolithic integrated circuit www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. CVTSZ22111・14・001 R2 VC R3 C1 ○This product has no designed protection against radioactive rays 1/40 TSZ02201-0T1T0AL00130-1-2 15.Sep.2015 Rev.005 BD906xx-C series Lineup Product Name HRP7 BD90640HFP-C BD90620HFP-C - HTSOP-J8 BD90640EFJ-C BD90620EFJ-C BD90610EFJ-C 4A 2.5 A 1.25 A Output Switch Current Input Maximum Ratings Input Voltage Range 42 V (Note 1) 3.5 V to 36 V 0.16 Ω (Typ) POWER MOSFET ON Resistance Power Dissipation HRP7 (Note 2) HTSOP-J8 6.98 W (Note 3) 3.10 W (Note 1) Initial startup is over 3.9 V (Note 2) Reduce by 55.8 mW / °C (Above 25°C), (JESD51 -5 / -7 standard FR4 114.3 mm × 76.2 mm × 1.60 mmt 4-layer Top copper foil: ROHM recommended footprint + wiring to measure / 2,3 inner layers and Copper foil area on the reverse side of PCB 74.2 mm × 74.2 mm, copper (top & reverse side / inner layers) 70 μm / 35 μm. Thermal via : pitch 1.2 mm, diameter Φ0.30 mm ) (Note 3) Reduce by 24.8 mW / °C (Above 25°C), (JESD51 -5 / -7 standard FR4 114.3 mm × 76.2 mm × 1.60 mmt 4-layer Top copper foil: ROHM recommended footprint + wiring to measure / 2,3 inner layers and Copper foil area on the reverse side of PCB 74.2 mm × 74.2 mm, copper (top & reverse side / inner layers) 70 μm / 35 μm. Thermal via : pitch 1.2 mm, diameter Φ0.30 mm) www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 2/40 TSZ02201-0T1T0AL00130-1-2 15.Sep.2015 Rev.005 BD906xx-C series Pin Configuration (TOP VIEW) (TOP VIEW) 1. VC 2. VIN 3. FB 4. GND 1. RT 8. FB 2. SW 7. PVIN 3. EN / SYNC 6. VIN 4. GND 5. VC FIN 5. RT 6. SW 7. EN / SYNC HRP7 HTSOP-J8 Pin Description Pin No. Symbol Function Pin No Symbol Function 1 VC Error Amp Output 1 RT Switching Frequency Setting Resistor Connection 2 VIN Power Supply Input 2 SW Switching Output 3 FB Output Voltage Feedback 3 EN / SYNC Enable / External Clock Input 4 GND GND 4 GND GND RT Switching Frequency Setting Resistor Connection 5 VC Error Amp Output 5 6 SW Switching Output 7 EN / SYNC Enable / External Clock Input FIN - GND 6 (Note 1) VIN 7 PVIN 8 Power Supply Input (Note 1) Power Supply Input FB Output Voltage Feedback (Note 1) VIN and PVIN must be shorted. HRP7 HTSOP-J8 Block Diagram PVIN 7 UVLO VIN VREF VREG OCP 6 VREF 3 EN / SYNC SCP_ LATCH Current Sense ∑ 　 SLOPE OCP OCP TSD ERROR_AMP + - + + SOFT_ START VC Q R DRV Pch POWER MOSFET FB 8 SW EN UVLO TSD OCP SCP_LATCH OFF RT OSC 0.8V GND 4 TSD CUR _COMP + - + + SOFT_ START 5 HRP7 VC PWM_LATCH S Q R DRV Pch POWER MOSFET SW EN UVLO TSD OCP SCP_LATCH OFF GND HTSOP-J8 3/40 1 TSD ERROR_AMP 6 1 www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 SLOPE + - PWM_LATCH S ∑ 　 SCP 0.55V CUR _COMP Current Sense OCP TSD + 0.55V SCP_LATCH SCP_ LATCH 5 OCP 0.8V EN / SYNC RT OSC SCP FB VREG EN / SYNC SCP_LATCH 3 UVLO OCP EN / SYNC 7 UVLO VIN UVLO 2 TSZ02201-0T1T0AL00130-1-2 15.Sep.2015 Rev.005 2 4 BD906xx-C series Description of Blocks 1. ERROR_AMP The ERROR_AMP block is an error amplifier and its inputs are the reference voltage 0.8 V (Typ) and the “FB” pin voltage. (Refer to recommended examples on p.16 to 17). The output “VC” pin controls the switching duty, the output voltage is set by “FB” pin with external resistors. Moreover, the external resistor and capacitor are required to COMP pin as phase compensation circuit (Refer to phase compensation selection method on p.17 to 18). 2. SOFT_START The function of the SOFT_START block is to prevent the overshoot of the output voltage VO through gradually increasing the input of the error amplifier when the power supply turns ON, which also results to the gradual increase of the witching duty. The soft start time is set to 1.38 ms (Typ , fSW = 500 kHz). The soft start time is changed by setting of the switching frequency. (Refer to p.18) 3. EN / SYNC The IC is in normal operation when the voltage on the “EN / SYNC” pin is more than 2.6 V. The IC is shut down when the voltage on the “EN / SYNC” pin is less than 0.8 V. Furthermore, external synchronization is possible when external clock are applied to the “EN / SYNC” pin. The switching frequency range of the external synchronization is within ±20 % of the switching frequency and is limited by the external resistance connected to the RT pin. ex) When RRT is 27 kΩ (f = 500 kHz), the switching frequency range of the external synchronization is 400 kHz to 600 kHz. 4. OSC (Oscillator) This circuit generates the clock pulses that are input to SLOPE block. The switching frequency is determined by the current going through the external resistor RT at constant voltage of ca. 0.8V. The switching frequency can be set in the range between 50 kHz to 600 kHz (Refer to p.16 Figure 13). The output of the OSC block send clock signals to PWM_LATCH. Moreover the generated pulses of the OSC block are also used as clock of the counter of SS and SCP_LATCH blocks. 5. SLOPE This block generates saw tooth waves using the clock generated by the OSC block. The generated saw tooth waves are combined with the current sense and sent to the CUR_COMP. 6. CUR_COMP (Current Comparator) The CUR_COMP block compares the signals between the ERROR_AMP and the combined signals from the SLOPE block and current sense. The output signals are sent to the PWM_LATCH block. 7. PWM_LATCH The PWM_LATCH block is a LATCH circuit. The OSC block output (set) and CUR_COMP block output (reset) are the inputs of this block. The PWM_LATCH block outputs PWM signals. 8. TSD (Thermal Shut down) The TSD block prevents thermal destruction / thermal runaway of the IC by turning OFF the Pch POWER MOSFET output when the temperature of the chip reaches more than about 175 °C (Typ). When the chip temperature falls to a specified level, the switching will resume. However, since the TSD is designed to protect the IC, the chip temperature should be provided with the thermal shutdown detection temperature of less than approximately Tjmax = 150 °C. 9. OCP (Over Current Protection) OCP is activated when the voltage between the drain and source (on-resistance × load current) of the Pch POWER MOSFET when it is ON, exceeds the reference voltage which is internally set within the IC. This OCP is a self-return type. When OCP is activated, the ON duty will be small, and the output voltage will decrease. However, this protection circuit is only effective in preventing destruction from sudden accident. It does not support the continuous operation of the protection circuit (e.g. if a load, which significantly exceeds the output current capacitance, is connected). 10. SCP (Short Circuit Protection) and SCP-LATCH While OCP is activated, and if the output voltage falls below 70 %, SCP will be activated. When SCP is active, the output will be turned OFF after a period of 1024 pulse. It extends the time that the output is OFF to reduce the average output current. In addition, during startup of the IC, this feature is masked until it reaches a certain output voltage to prevent the startup failure. 11. UVLO (Under Voltage Lock-Out) UVLO is a protection circuit that prevents low voltage malfunction. It prevents malfunction of the internal circuit from sudden rise and fall of power supply voltage. It monitors the VIN power supply voltage and the internal regulator voltage. If VIN is less than the threshold voltage 3.24 V (Typ), the Pch POWER MOSFET output is OFF and the soft-start circuit will be restarted. This threshold voltage and release voltage have a hysteresis of 280 mV (Typ). 12. DRV (Driver) This circuit drives the gate electrode of the Pch POWER MOSFET output. It reduces the increase of the Pch POWER MOSFET’s on-resistance by switching the driving voltage when the power supply voltage drop. www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 4/40 TSZ02201-0T1T0AL00130-1-2 15.Sep.2015 Rev.005 BD906xx-C series Absolute Maximum Ratings (Ta = 25 °C) Parameter Symbol Rating Unit Input Power Supply Voltage VIN, PVIN -0.3 to +42 V EN / SYNC Pin Voltage VEN / SYNC -0.3 to VIN V RT, VC, FB Pin Voltage VRT, VVC, VFB -0.3 to +7 V HRP7 Power Dissipation (Note2) 6.98 (Note1) Pd HTSOP-J8 W (Note3) 3.10 Storage Temperature Range Maximum Junction Temperature Tstg -55 to +150 °C Tjmax 150 °C (Note 1) Do not however exceed Pd. (Note 2) Reduce by 55.8 mW / °C, (Above 25°C), (JESD51 -5 / -7 standard FR4 114.3 mm × 76.2 mm × 1.60 mmt 4-layer Top copper foil: ROHM recommended footprint + wiring to measure / 2,3 inner layers and Copper foil area on the reverse side of PCB 74.2 mm × 74.2 mm, copper (top & reverse side / inner layers) 70 µm / 35 µm. Thermal via : pitch 1.2 mm, diameter Φ0.30 mm ) (Note 3) Reduce by 24.8 mW / °C, (Above 25°C), (JESD51 -5 / -7 standard FR4 114.3 mm × 76.2 mm × 1.60 mmt 4-layer Top copper foil: ROHM recommended footprint + wiring to measure / 2,3 inner layers and Copper foil area on the reverse side of PCB 74.2 mm × 74.2 mm, copper (top & reverse side / inner layers) 70 µm / 35 µm. Thermal via : pitch 1.2 mm, diameter Φ0.30 mm ) Caution: Exceeding the absolute maximum rating for supply voltage, operating temperature or other parameters can result in damages to or destruction of the chip. In this event it also becomes impossible to determine the cause of the damage (e.g. short circuit, open circuit, etc). Therefore, if any special mode is being considered with values expected to exceed the absolute maximum ratings, implementing physical safety measures, such as adding fuses, should be considered. Recommended Operating Conditions Parameter Symbol Limit Unit Min Max VIN, PVIN 3.5 36 V Topr -40 +125 °C BD90640HFP/EFJ-C ISW40 - 4 A BD90620HFP/EFJ-C ISW20 - 2.5 A BD90610EFJ-C ISW10 - 1.25 A VO 0.8 VIN V Min ON Pulse Width TON_MIN 250 - ns Switching Frequency fSW 50 600 kHz Switching Frequency Set Resistance RRT 22 330 kΩ Synchronous Operation Frequency Range fSYNC 50 600 kHz fSYNC_RT -20 +20 % DSYNC 10 90 % - µF Operating Power Supply Voltage (Note 1) Operating Temperature Range Output Switch Current (Note2) Output Voltage Synchronous Operation Frequency External Clock ON Duty Capacitance of Input Capacitor CIN 2.4 (Note 3) (Note 1) Initial startup is over 3.9 V. (Note 2) The Limits include output DC current and output ripple current. (Note 3) Ceramic capacitor is recommended. The capacitor value including temperature change, DC bias change, and aging change must be larger than minimum value (Refer to p.15). Also, the IC might not function properly when the PCB layout or the position of the capacitor is not good. Please check “Notes on the PCB Layout” on page 30. www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 5/40 TSZ02201-0T1T0AL00130-1-2 15.Sep.2015 Rev.005 BD906xx-C series Electrical Characteristics (Unless otherwise specified, Ta = - 40 °C to +125 °C, VIN = 13.2 V, VEN / SYNC = 5 V) Limit Parameter Symbol Unit Conditions Min Typ Max ISDN - 0 5 μA VEN / SYNC = 0 V, Ta < 105 °C IIN - 2.2 3.3 mA Io = 0 A, VFB = 2 V RON - 0.16 0.32 Ω BD90640HFP / EFJ-C ISWLIMIT40 4.0 6.4 - A BD90620HFP / EFJ-C ISWLIMIT20 2.5 4.3 - A BD90610EFJ-C ISWLIMIT10 1.25 2.20 - A IOLK - 0 5 μA VIN = 36 V, VEN / SYNC = 0 V, Ta < 105 °C Reference Voltage 1 VREF1 0.792 0.800 0.808 V VVC = VFB, Ta = 25 °C Reference Voltage 2 VREF2 0.784 0.800 0.816 V VVC = VFB Reference Voltage Input Regulation ΔVREF - 0.5 - % 3.5 V ≤ VIN ≤ 36 V IB -1.0 - +1.0 μA IVCSINK -76.5 -54.0 -31.5 μA VC Source Current IVCSOURCE 31.5 54.0 76.5 μA Trans Conductance GEA 135 270 540 μA / V Soft Start Time TSS 1.13 1.38 1.63 ms GCS - 5.2 - A/V fSW 450 500 550 kHz ΔfSW - 1 - % Threshold Voltage VEN / SYNC 0.8 1.9 2.6 V SYNC Current IEN / SYNC - 23 50 μA UVLO ON Mode Voltage VUVLO_ON - 3.24 3.50 V UVLO OFF Mode Voltage VUVLO_OFF - 3.52 3.90 V UVLO Hysteresis VUVLO_HYS - 280 - mV Whole chip Shutdown Circuit Current Circuit Current SW Block POWER MOSFET ON Resistance Operating Output Switch Current Of Overcurrent (Note 1) Protection Output Leak Current ISW = 30 mA Error Amp Block Input Bias Current VC Sink Current VVC = 1.25 V, VFB = 1.3 V VVC = 1.25 V, VFB = 0.3 V IVC = ±10 μA, VVC = 1.25 V RRT = 27 kΩ Current Sense Part Trans Conductance OSC Block Switching Frequency Frequency Input Regulation RRT = 27 kΩ 3.5 V ≤ VIN ≤ 36 V Enable / Sync Input Block VEN / SYNC = 5 V UVLO (Note 1) The Limit include output DC current and output ripple current. www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 6/40 TSZ02201-0T1T0AL00130-1-2 15.Sep.2015 Rev.005 BD906xx-C series 4.0 4.0 3.5 3.5 3.0 From Top Ta = 125 °C Ta = 25 °C Ta = -40 °C 2.5 Circuit Current :IIN [mA] Shutdown Circuit Current : ISDN[µA] Typical Performance Curves 2.0 1.5 1.0 0.5 3.0 2.5 2.0 1.5 From Top Ta = 125 °C Ta = 25 °C Ta = -40 °C 1.0 0.5 0.0 0.0 0 5 10 15 20 25 30 Input Voltage : VIN [V] 35 40 0 Figure 1. Shutdown Circuit Current vs Input Voltage 10 15 20 25 30 Input Voltage : VIN [V] 35 40 Figure 2. Circuit Current vs Input Voltage 0.30 10 From Top BD90640HFP / EFJ-C BD90620HFP / EFJ-C BD90610EFJ-C 9 0.25 Switch Current Limit : ISW [A] POWER MOSFET ON Resistance : RON[Ω] 5 0.20 0.15 From Top VIN = 3.5 V VIN = 13.2 V 0.10 0.05 8 7 6 5 4 3 2 1 0.00 Ta = 25 °C 0 -40 -20 0 20 40 60 80 100 120 Ambient Temperature : Ta [˚C] Figure 3. POWER MOSFET ON Resistance vs Ambient Temperature www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 0 5 10 15 20 25 30 Input Voltage : VIN [V] 35 40 Figure 4. Switch Current Limit vs Input Voltage 7/40 TSZ02201-0T1T0AL00130-1-2 15.Sep.2015 Rev.005 BD906xx-C series Typical Performance Curves – continued 5.0 816 812 Reference Voltage : VREF[V] Leak Current : IOLK [μA] 4.0 3.0 2.0 1.0 808 804 800 796 792 788 VIN = 13.2 V 0.0 VIN = 13.2 V 784 -40 -20 0 20 40 60 80 100 120 Ambient Temperature : Ta [˚C] -40 -20 0 20 40 60 80 100 120 Ambient Temperature : Ta[˚C] Figure 6. Reference Voltage vs Ambient Temperature Figure 5. Leak Current vs Ambient Temperature 1.63 1.0 1.58 1.53 Soft Start Time : TSS[μS] Input Bias Current :IB [μA] 0.8 0.6 0.4 1.48 1.43 1.38 1.33 1.28 1.23 0.2 VIN = 13.2 V VFB = 0.8 V 1.18 RRT = 27 kΩ 1.13 0.0 -40 -20 0 20 40 60 80 100 120 Ambient Temperature : Ta [˚C] -20 0 20 40 60 80 100 120 Ambient Temperature : Ta[˚C] Figure 8. Soft Start Time vs Ambient Temperature Figure 7. Input Bias Current vs Ambient Temperature www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 -40 8/40 TSZ02201-0T1T0AL00130-1-2 15.Sep.2015 Rev.005 BD906xx-C series Typical Performance Curves – continued 550 EN / SYNC Threshold Voltage : VEN/SYNC [V] 2.6 540 Switching Frequency : fSW [kHz] 530 520 510 500 490 480 470 VIN = 13.2 V RRT = 27 kΩ 460 -20 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 450 -40 2.4 -40 0 20 40 60 80 100 120 Ambient Temperature : Ta[˚C] 0 20 40 60 80 100 120 Ambient Temperature : Ta [˚C] Figure 10. EN / SYNC Threshold Voltage vs Ambient Temperature Figure 9. Switching Frequency vs Ambient Temperature 450 100 400 90 From Top Ta = 125 °C Ta = 25 °C Ta = -40 °C 350 300 80 From Top VO = 8.8 V VO = 5 V VO = 3.3 V 70 Efficiency [%] EN / SYNC Current : IEN / SYNC [μA] -20 250 200 150 60 50 BD90640HFP / EFJ-C IO