Automotive Regulator Selection Guide Rev. 1.2 www.rohm.com Power Supply Requirements the Drive Automotive Evolution EV/HEV Adoption Increase of Energy Consumption(while Parked) Start-Stop System Drive Assist System (Camera, Rader) INDEX Power Supply Requirements ・・・・・・・・・・・・・・・・ 1,2 Switching Regulators Input Voltage vs. Output Current Map ・・・・・・・・ 3 Product Chart ・・・・・・・・・・・・・・・・・・・ 4 Primary Buck Regulator: Technical Topics ・・・ 5-7 Primary Buck Regulator: Product Table ・・・ 8 Secondary Buck Regulator: Technical Topics ・・ 9,10 Secondary Buck Regulator: Product Table ・・・ 11 Primary Buck-Boost Regulators ・・・・・・・・ 12 Linear Regulators Increase of car-electronics and circuit size Increase of Energy Consumption(while Parked) ROHM Power Supply IC Advantages ➤ P5,6,15 Automotive Regulator Selection Guide ➤ P7,12 ➤ P9,10,21 Input Voltage vs. Output Current Map ・・・・・・・・ 13 Product Chart ・・・・・・・・・・・・・・・・・・・ 14 Primary Buck Regulator: Technical Topics ・・・ 15 Primary Buck Regulator: Product Table ・・・ 16-20 Secondary Buck Regulator: Technical Topics ・・ 21 Secondary Buck Regulator: Product Table ・・・ 22 Applications Thermal Resistance · Characteristics ・・・・・・・・・ 23,24 Noise Characteristics · Tolerance ・・・・・・・・・・ 25 Checkpoints for PCB Design ・・・・・・・・・・ 26 Conductive Noise Measure Example ・・・・・・・・・ 27 Appendix: Technique of Data Acquisition ・・・・・ 28 1 Primary Switching Regulators ➤ P3-8,12 12V Battery Primary Linear Regulators ➤ P13-20 Secondary Switching Regulators ➤ P3,4,9-11 Secondary Linear Regulators ➤ P13,14,21,22 Switching Regulator (DC/DC) Linear Regulator (LDO) Features Buck / Boost / Buck-Boost (Depends on model) Many external parts ⇒ Higher total cost High conversion efficiency ⇒ Low heat generation Simple circuit configuration Less external parts ⇒ Lower total cost (vs DC/DC) Low conversion efficiency ⇒ High heat generation Voltage Generation PWM (width) / PFM (frequency) ⇒ Significant noise Resistor divider ⇒ Low noise Applications Contributes to greater energy savings, suitable for both low and high power systems Low noise, low-cost solution Ideal for low power devices ROHM Power Supply IC Advantages Noise Characteristics · Tolerance ➤ P25-27 Automotive Regulator Selection Guide Thermal Resistance · Characteristics ➤ P23,24 2 Automotive Step-Down Switching Regulator Lineup Primary 【Switching】 Secondary 【Switching】 BD9035AEFV-C ※Buck-Boost Ext. Rated Voltage Rated Voltage BD9015KV-M / BD9016KV-M BD90640EFJ-C / BD90640HFP-C Output Current （A） 4.0 BD90540EFV-C / BD90540MUV-C BD90532 / 35 / 38EFJ-C 3.0 BD90530EFV-C / BD90530MUV-C BD90730NUX-C BD90620EFJ-C / BD90620HFP-C 2.5 BD90522 / 25 / 28EFJ-C 2.0 BD90520EFV-C / BD90520MUV-C BD9060F / BD9060HFP-C BD99010EFV-M / BD99011EFV-M BD90610EFJ-C 1.25 BD90571EFJ-C 1.0 1.7 2.4 2.6 2.69 3.5 3.6 3.8 3.9 4.0 4.17 4.3 4.37 4.5 4.6 5.0 5.5 5.6 5.8 5.9 6.0 7.0 8.0 9.0 10 Under development Automotive Regulator Selection Guide 14 15 24 26.5 30 33 35 36 40 42 45 50 Input Rail Voltage （V） 3 Automotive Step-Down Switching Regulator Product Family Input Primary Control Mode Buck-Boost Secondary Buck Output FET Internal External Quiescent Current Ultra Low Control Mode Control Mode Voltage Mode Standard Control Mode Current Mode Control Mode Voltage Mode Current Mode Control Mode Current Mode Current Mode Output Voltage Fixed BD9035AEFV-C BD9015KV-M BD99010EFV-M 0.8-13V, 100k-600kHz 0.8-10V, 250k-550kHz Low-side FET OFF in Protected Mode 3.3V,2.0A,200-500kHz BD99011EFV-M BD9060F-C BD9060HFP-C BD90640EFJ-C BD90640HFP-C 0.8-VIN,2.0A,50k-500kHz 0.8-VIN,4.0A,50k-600kHz 5.0V,2.0A,200k-500kHz BD90620EFJ-C BD90620HFP-C BD9016KV-M 0.8-10V, 250k-550kHz Low-side FET ON in Protected Mode 0.8-VIN,2.0A,50k-600kHz BD90610EFJ-C 0.8-VIN,1.0A,50k-600kHz BD90730NUX-C （ Under development） 0.8-TBD,3.0A, 100k-2400kHz BD90532EFJ-C 1.2V, 3.0A, 2.25MHz BD90522EFJ-C 1.2V, 2.0A, 2.25MHz BD90571EFJ-C 1.2V, 1.0A, 2.25MHz BD90535EFJ-C 1.5V, 3.0A, 2.25MHz Variable BD90540EFV-C BD90540MUV-C （ Under development ） Variable, 4.0A, 0.3M-2.4MHz BD90530EFV-C BD90530MUV-C （ Under development ） Variable, 3.0A, 0.3M-2.4MHz BD90525EFJ-C 1.5V, 2.0A, 2.25MHz BD90538EFJ-C 1.8V, 3.0A, 2.25MHz BD90528EFJ-C BD90520EFV-C BD90520MUV-C （ Under development ） Variable, 2.0A, 0.3M-2.4MHz 1.8V, 2.0A, 2.25MHz P8,12 P8 P5,6,8 P8 Primary Switching Regulators Automotive Regulator Selection Guide P7,8 P9-11 P9-11 Secondary Switching Regulators 4 Primary Switching Regulators （BD9901xEFV-M Series） Low Quiescent Current Solutions The BD99010EFV-M and BD99011EFV-M are low Iq step-down DC/DC converters that integrate a power MOSFET and provide 3.3V and 5V output, respectively. SLLMTM (Simple Light Load Mode) is included, ensuring low current consumption and high efficiency at light loads as well as high efficiency during heavy loads while providing regulated output voltage. In addition, the ICs are compliant with automotive standards and support a maximum voltage of 42V. A minimum input voltage of 3.6V maintains output when cold cranking, and current mode control delivers fast transient response and easy phase compensation. Both models are available in a HTSSOP-B24 package, making them ideal for applications requiring few external components and a small PCB footprint. 2 VIN 3 220µF CIN ＋4.7µF 5 3.3V, 2A 0.1µF C6 PGND 7 Battery BD99011EFV-M 5.0V, 2A MCU, CAN Product Overview: BD9901xEFV-M Low Quiescent Current Low quiescent current: 22µA (Typ.) High Efficiency HTSSOP-B24 Synchronous rectification (No external Schottky diode required) Simple Light Load Mode (SLLMTM) Supports Cold Cranking Operation (3.6V Operation) Input voltage range: 3.6V to 35V (42V rating) (Initial startup over 3.9V) Output voltage: 3.3V±2% (BD99010EFV-M) 5.0V±2% (BD99011EFV-M) Switching output current: 2A (Max.) Switching frequency: 200k to 500kHz Integrated switching FET: Pch 170mΩ (Typ.), Nch 130mΩ (Typ.) Soft Start built in Enable pin compatible with CMOS logic and battery voltages Forced PMW Mode function Current Mode control with external compensation circuit Over Current/Short Circuit protection, VOUT Over Voltage protection, Under Voltage Lock Out, and thermal protection circuits Automotive Regulator Selection Guide VIN 75kΩ RRT 11 33 R1 kΩ 1000 C7 pF 12 SW SW PGND 23 22 RT COMP GND REG 20 PGND 10µH L1 19 18 VREGB 8 10 MCU, CAN PGND PGND 24 21 6 9 BD99010EFV-M PVIN PVIN 4 GND 12V BD9901xEFV-M PGND 1 REG_L VOUT EN VOUT 22µF COUT x3 17 16 PGND 15 EN 14 FPWM 13 FPWM 1µF C5 GND GND GND GND GND PGND BD9901xEFV Application Circuit BD99011EFV-M Efficiency vs Load Current VIN=13.2V , VOUT=5.0V (Log scale) BD99011EFV-M Efficiency vs Load Current VIN=13.2V , VOUT=5.0V (Linear scale) 5 SLLMTM (Simple Light Load Mode) Control During lighter loads operation automatically switches to Simple Light Load Mode (SLLMTM), which utilizes PWM control and compares the output voltage to an internal reference voltage. When the output voltage drops below the reference voltage switching pulses are output to increase the voltage above the reference level, after which the SW output turns off and the controller goes into a very low current consumption standby mode until the output voltage dips below the reference voltage again. When the time between switching pulse skips becomes short the devices exit SLLMTM mode and resume normal continuous switching operation. The load level of the switching pulse skip can be adjusted by the input voltage and inductor value. SLLM PWM BD99010EFV-M Mode Transition (SLLM to PWM) BD99011EFV-M Mode Transition (SLLM to PWM) SW and VOUT Waveforms at SLLM (Light load) SW and VOUT Waveforms at PWM (Heavy load) Current Mode PWM Control Diagram SLLM Switching Timing Chart Automotive Regulator Selection Guide PWM Switching Timing Chart SLLMTM control at light loads differs from regular PWM, resulting in higher output ripple voltage. Also, during SLLMTM the transient response for heavy loads is slower. 6 Primary Switching Regulators （BD906xxEFJ-C Series） Low Voltage Operation Solutions The BD906xxEFJ-C series of step-down switching regulators integrate a high voltage power MOSFET and make it possible to easily set the operating frequency via external resistor. Features include wide input voltage (3.5V to 36V) and operating temperature (-40ﾟC to +125ﾟC) ranges, along with an external synchronization input pin that enables synchronous operation via external clock. In addition, the internal Pch MOSFET can operate at 100% ON duty to ensure stable operation even during severe battery drops during conventional cranking or idling stop operation. BD906xxEFJ-C PVIN L1 15µH SW VO D1 VIN 22µHx2 15µH CO R1 43kΩ C2 OPEN VIN BD90610EFJ-C 12V Battery Variable, 1A MCU, CAN CBULK 220µF CIN 4.7µF FB RT BD90620EFJ-C BD90620HFP-C Variable, 2A BD90640EFJ-C BD90640HFP-C Variable, 4A CRT 100pF MCU, CAN RRT 27kΩ VEN/SYNC R3 4700pF C1 20kΩ GND MCU, CAN Product Overview: BD906xxEFJ-C/HFP-C 8.2kΩ R2 VC EN/SYNC BD906xxEFJ-C Application Circuit Wide Input Voltage Range Input voltage range: 3.5V to 36V (42V rating) (Initial startup over 3.9V) Built-in Pch FET enables 100% duty HTSOPJ-8 BD906xxEFJ-C Circuit current at shutdown: 0µA (Typ.) Reference voltage: 0.8V±2% (Ta: -40ﾟC to +125ﾟC) 0.8V±1% (Ta: 25ﾟC ) Switch output current: 1.25A Max. (BD90610EFJ-C) 2.5A Max. (BD90620EFJ-C/HFP-C) 4A Max. (BD90640EFJ-C/HFP-C) Switching frequency: 50k to 600kHz Internal switching FET: Pch 160mΩ (Typ.) Soft Start function Enable pin compatible with CMOS logic and battery voltages Current mode control with external compensation circuit HRP7 BD906xxHFP-C Over Current/Short Circuit protection, Under Voltage Lock Out, and Thermal Shutdown circuits Automotive Regulator Selection Guide Input Voltage 12V⇒5V⇒12V From above BD906XXEFJ-C Nch Switching Regulator Output voltage drop is small even if the Input Voltage ≑ Output Voltage”. BD906xxEFJ-C Output Waveform in Input Voltage Change BD906xxEFJ-C Efficiency vs Load Current VIN=13.2V 7 Primary Switching Regulator Selection Guide Output FET Number of Channels Rated Voltage (V) High Side (Typ.) Low Side (Typ.) Min. Max. Output Voltage (V) Typ. Switching Frequency Range (kHz) Operating Circuit Control Current Mode (mA) Typ. Accuracy (%) Power Good Part No. Reference (Output) Voltage Accuracy (%) External Synchronization Variable Soft Start Synchronous Rectification Simple Light Load Mode Over Current Protection Thermal Shutdown Overvoltage Protection Functions Input Voltage Output Range Current (V) (A) Max. Operating Temperature Range (ﾟC) Package BD9015KV-M 2 Ext. Nch Ext. Nch 35 - 3.9 30 Variable (0.8-10) ±1.5 250 ～ 550 ±10 Current 4 ✓ ✓ ✓ ✓ - SR SR ✓ -40 ～ 105 VQFP48C BD9016KV-M 2 Ext. Nch Ext. Nch 35 - 3.9 30 Variable (0.8-10) ±1.5 250 ～ 550 ±10 Current 4 ✓ ✓ ✓ ✓ - SR SR ✓ -40 ～ 105 VQFP48C BD99010EFV-M 1 Pch (170mΩ) Nch (130mΩ) 42 2.0 3.6 35 3.3 (±2.0) 200 ～ 500 ±20 Current 0.02 - - - ✓ ✓ SR SR ✓ -40 ～ 105 HTSSOP-B24 BD99011EFV-M 1 Pch (170mΩ) Nch (130mΩ) 42 2.0 3.6 35 5.0 (±2.0) 200 ～ 500 ±20 Current 0.02 - - - ✓ ✓ SR SR ✓ -40 ～ 105 HTSSOP-B24 BD9060F-C 1 Pch (300mΩ) - 42 2.0 5.0 35 Variable (0.8-VIN) ±2.0 50 ～ 550 ±5 Voltage 4.5 - ✓ - - - SR SR - -40 ～ 125 SOP8 BD9060HFP-C 1 Pch (300mΩ) - 42 2.0 5.0 35 Variable (0.8-VIN) ±2.0 50 ～ 550 ±5 Voltage 4.5 - ✓ - - - SR SR - -40 ～ 125 HRP7 BD90640HFP-C 1 Pch (160mΩ) - 42 4.0 3.5 36 Variable (0.8-VIN) ±2.0 50 ～ 600 ±10 Current 2.2 - ✓ ✓ - - SR SR - -40 ～ 125 HRP7 BD90640EFJ-C 1 Pch (160mΩ) - 42 4.0 3.5 36 Variable (0.8-VIN) ±2.0 50 ～ 600 ±10 Current 2.2 - ✓ ✓ - - SR SR - -40 ～ 125 HTSOP-J8 BD90620HFP-C 1 Pch (160mΩ) - 42 2.5 3.5 36 Variable (0.8-VIN) ±2.0 50 ～ 600 ±10 Current 2.2 - ✓ ✓ - - SR SR - -40 ～ 125 HRP7 BD90620EFJ-C 1 Pch (160mΩ) - 42 2.5 3.5 36 Variable (0.8-VIN) ±2.0 50 ～ 600 ±10 Current 2.2 - ✓ ✓ - - SR SR - -40 ～ 125 HTSOP-J8 BD90610EFJ-C 1 Pch (160mΩ) - 42 1.25 3.5 36 Variable (0.8-VIN) ±2.0 50 ～ 600 ±10 Current 2.2 - ✓ ✓ - - SR SR - -40 ～ 125 HTSOP-J8 BD90730NUX-C 1 Nch (180mΩ) - 42 3.0 3.5 36 Variable (0.8-TBD) ±2.0 100 ～ 2400 ±10 Current 1.9 ✓ ✓ ✓ - - L SR ✓ -40 ～ 125 VSON10 ※ SR：Self Recovery , L：Latch Under development VQFP48C Automotive Regulator Selection Guide HTSSOP-B24 SOP8 HRP7 VSON10 ※ Please refer to page 11 for the HTSOP-J8 package. 8 Secondary Switching Regulators （BD905xx-C Series） Space-Saving High Efficiency Solutions 12V Battery Primary Regulator 5V BD90571EFJ-C BD9052xEFJ-C BD9053xEFJ-C 1.2V, 1A 1.2/1.5/1.8V, 2A 1.2/1.5/1.8V, 3A BD905x0EFV-C BD905x0MUV-C Variable, 2/3/4A 20mm 2 VIN PGND 7 3 EN FB 6 4 GND MCU MCU ※BD90571EFJ-C / 1.5µH BD905xxEFJ-C 1 PVIN SW 8 20mm The BD905xx-C series of 2.25MHz fixed frequency synchronous rectification step-down DC/DC converters integrate a phase compensation circuit and feedback resistor that supplies a fixed output voltage of 1.2V/1.5V/1.8V, making it possible to configure applications with fewer external components. The BD905x0 series consists of variable (0.3 to 2.4MHz) synchronous rectification step-down DC/DC converters featuring an internal external synchronization function and low current consumption (65uA) that enables high efficiency operation even at light loads. BD90571EFJ-C PCB ※BD90571EFJ-C / 47µF×1 MODE 5 BD905xxEFJ-C Application Circuit VIN BD905x0EFV-C/MUV-C 1 PGND Product Overview: BD905xxFEJ-C / BD905x0EFV-C/MUV-C Integrated output feedback resistors and phase compensation Synchronous rectification type Low current consumption: 65µA (Variable type) Selectable Light Load/PWM Fixed modes Switching frequency: 2.25MHz±20% (Fixed type) 0.3M to 2.4MHz±15% (Variable type) HTSSOP-B20 External synchronous function(Variable type) Input voltage range: 2.6V (Variable)/2.69V (Fixed) to 5.5V (7V Rating) Integrated SW FET: Pch 85mΩ (Typ.), Nch 70mΩ (Typ.) (Fixed type) Pch 90mΩ (Typ.), Nch 60mΩ (Typ.) (Variable type) Current mode control Over Current/Short Circuit protection, VOUT Over Voltage protection, Under Voltage Lock Out, and thermal protection circuits Output Current 1A 1.0µH VOUT 22µF HTSOP-J8 22µF VIN 22µF 22µF 10Ω 1µF EN MODE VQFN20SV4040 0.01 µF 2 PGND CTL 19 3 SW SYNC 18 4 SW SEL 17 5 N.C RT 16 6 PVIN N.C 15 7 PVIN FB 14 8 VIN SS 13 9 EN COMP 12 10 MODE 10kΩ PGOOD 20 GND 11 VOUT 100kΩ OPEN 30kΩ OPEN 30kΩ 10kΩ 2200pF OPEN 3300pF BD905x0EFV-C Application Circuit Output (Reference) Voltage Variable (0.8V±1.5%) 1.2V±2% 1.5V±2% 1.8V±2% － BD90571EFJ-C － － 2A BD90520EFV-C BD90522EFJ-C BD90525EFJ-C BD90528EFJ-C 3A BD90530EFV-C BD90532EFJ-C BD90535EFJ-C BD90538EFJ-C 4A BD90540EFV-C － － Under development BD905xxFEJ-C / BD905x0EFV-C/MUV-C Lineup Automotive Regulator Selection Guide － BD90532EFJ-C Efficiency vs Load Current BD90535EFJ-C Efficiency vs Load Current BD90538EFJ-C Efficiency vs Load Current 9 Load Response for Each Mode Setting the MODE pin voltage below 0.7V switches operation to Light Load Mode. Intermittent operation is automatically performed in Light Load Mode when the output load current is small. This suppresses switching loss, improving efficiency compared with PWM fixed mode. It should be noted that the load current during intermittent operation will change depending on the input voltage and inductor value. If the MODE pin is set to 2.1V or more PWM fixed mode operation is performed. And although efficiency is decreased at light loads compared with Light Load Mode, fixed frequency switching operation is implemented throughout the entire load range, making noise countermeasures relatively easier. BD905xxEFJ-C 1 PVIN SW 8 2 VIN PGND 7 3 EN FB 6 PWM Mode Load Response BD90535EFJ-C , MODE=0V IOUT=0→3.0→0A Load Response BD90535EFJ-C , MODE=3.3V IOUT=0→3.0→0A ※BD90571EFJ-C / 47µF×1 MODE 5 Reference Application Circuit BD90571EFJ-C 4 GND ※BD90571EFJ-C / 1.5µH Light Load Mode BD90535EFJ-C Light Load and PWM Fixed Modes Light Load PWM Load Response BD90571EFJ-C , MODE=0V IOUT=0→1.0→0A Switching Operation at Light Load Mode Switching Operation at PWM Mode Automotive Regulator Selection Guide Load response BD90571EFJ-C , MODE=3.3V IOUT=0→1.0→0A SLLMTM control at light loads differs from regular PWM, resulting in higher output ripple voltage. Also, during SLLMTM the transient response for heavy loads is slower. 10 Secondary Switching Regulator Selection Guide Number of Channels Output FET High Side (Typ.) Low Side (Typ.) Rated Voltage (V) Min. Output Voltage (V) Typ. Max. Switching Frequency Range (MHz) Operating Circuit Control Current Mode (mA) Typ. Accuracy (%) Power Good Part No. Reference (Output) Voltage Accuracy (%) External Synchronization Variable Soft Start Synchronous Rectification Simple Light Mode Over Current Protection Thermal Shutdown Overvoltage Protection Functions Input Voltage Output Range Current (V) (A) Max. Operating Temperature Range (ﾟC) Package BD90540EFV-C 1 Pch (90mΩ) Nch (60mΩ) 7 4.0 2.6 5.5 Variable (0.6-5.0) ±1.5 0.3～2.4 ±15 Current 0.065 ✓ ✓ ✓ ✓ ✓ SR SR ✓ -40 ～ 125 HTSSOP-B20 BD90540MUV-C 1 Pch (90mΩ) Nch (60mΩ) 7 4.0 2.6 5.5 Variable (0.6-5.0) ±1.5 0.3～2.4 ±15 Current 0.065 ✓ ✓ ✓ ✓ ✓ SR SR ✓ -40 ～ 125 VQFN20SV4040 BD90530EFV-C 1 Pch (90mΩ) Nch (60mΩ) 7 3.0 2.6 5.5 Variable (0.6-5.0) ±1.5 0.3～2.4 ±15 Current 0.065 ✓ ✓ ✓ ✓ ✓ SR SR ✓ -40 ～ 125 HTSSOP-B20 BD90530MUV-C 1 Pch (90mΩ) Nch (60mΩ) 7 3.0 2.6 5.5 Variable (0.6-5.0) ±1.5 0.3～2.4 ±15 Current 0.065 ✓ ✓ ✓ ✓ ✓ SR SR ✓ -40 ～ 125 VQFN20SV4040 BD90532EFJ-C 1 Pch (85mΩ) Nch (70mΩ) 7 3.0 2.69 5.5 1.2 (±2.0) 2.25 ±20 Current 0.65 - - - ✓ ✓ SR SR ✓ -40 ～ 125 HTSOP-J8 BD90535EFJ-C 1 Pch (85mΩ) Nch (70mΩ) 7 3.0 2.69 5.5 1.5 (±2.0) 2.25 ±20 Current 0.65 - - - ✓ ✓ SR SR ✓ -40 ～ 125 HTSOP-J8 BD90538EFJ-C 1 Pch (85mΩ) Nch (70mΩ) 7 3.0 2.69 5.5 1.8 (±2.0) 2.25 ±20 Current 0.65 - - - ✓ ✓ SR SR ✓ -40 ～ 125 HTSOP-J8 BD90520EFV-C 1 Pch (90mΩ) Nch (60mΩ) 7 2.0 2.6 5.5 Variable (0.6-5.0) ±1.5 0.3～2.4 ±15 Current 0.065 ✓ ✓ ✓ ✓ ✓ SR SR ✓ -40 ～ 125 HTSSOP-B20 BD90520MUV-C 1 Pch (90mΩ) Nch (60mΩ) 7 2.0 2.6 5.5 Variable (0.6-5.0) ±1.5 0.3～2.4 ±15 Current 0.065 ✓ ✓ ✓ ✓ ✓ SR SR ✓ -40 ～ 125 VQFN20SV4040 BD90522EFJ-C 1 Pch (85mΩ) Nch (70mΩ) 7 2.0 2.69 5.5 1.2 (±2.0) 2.25 ±20 Current 0.65 - - - ✓ ✓ SR SR ✓ -40 ～ 125 HTSOP-J8 BD90525EFJ-C 1 Pch (85mΩ) Nch (70mΩ) 7 2.0 2.69 5.5 1.5 (±2.0) 2.25 ±20 Current 0.65 - - - ✓ ✓ SR SR ✓ -40 ～ 125 HTSOP-J8 BD90528EFJ-C 1 Pch (85mΩ) Nch (70mΩ) 7 2.0 2.69 5.5 1.8 (±2.0) 2.25 ±20 Current 0.65 - - - ✓ ✓ SR SR ✓ -40 ～ 125 HTSOP-J8 BD90571EFJ-C 1 Pch (85mΩ) Nch (70mΩ) 7 1.0 2.69 5.5 1.2 (±2.0) 2.25 ±20 Current 0.65 - - - ✓ ✓ SR SR ✓ -40 ～ 125 HTSOP-J8 Under development HTSOP-J8 Automotive Regulator Selection Guide ※ SR：Self Recovery HTSSOP-B20 VQFN20SV4040 11 Buck-Boost Switching Regulator Controller （BD9035AEFV-C) Buck-Boost Automatic Switching Control Solution for Low Voltage Drive The BD9035 buck-boost switching controller features high withstand voltage, a wide input range (VIN=3.8 to 30V), and is capable of generating buck-boost output using only one inductor. Boost-buck automatic switching control improves efficiency over conventional REGSPIC switching regulators. In addition, high switching frequency accuracy (±7%) is achieved throughout the entire operating temperature range (Ta=-40ﾟC to +125ﾟC). Product Overview: BD9035AEFV-C EN EN VREG3 VREG3 0.47µF 33 kΩ VOUT 2.2 100 680pF kΩ pF 82 330Ω kΩ 0.015µF Buck-boost output possible with only one inductor Automatic Boost/Boost-Buck/Buck switching improves efficiency 3-mode automatic switching control High accuracy oscillation frequency and built-in PLL external synchronization function simplify noise countermeasures High switching frequency accuracy: ±7% (-40ﾟC to +125ﾟC) PLL enables a wide external synchronous frequency range: 100k to 600kHz Input voltage range: 3.8V to 30V (40V rating) Oscillation frequency range: 100k to 600kHz Two-stage overcurrent protection through one external resistor Output undervoltage/overvoltage protection and Power Good VOUT 82kΩ 2.2µF 0.1µF OUTH 40mΩ//3 CL CL CLKOUT CLKOUT OUTH OUTH SYNC SYNC RT RT VL VL BD9035AEFV-C 降圧モード Buck OUTL 10µH VOUT 100µF OUTH COMP COMP 昇降圧モード Buck-boost VREG5 OUTL VDD VDD OUTL OUTL PGND PGND FB FB 1µF OUTH OVPLVL OVPLVL 15.6kΩ BAT 220µF VCCCL VCCCL VREG5 VREG5 0.47µF 15.6kΩ VCC VCC SS TEST TEST SS VREG3 GND GND 昇圧モード Boost 47kΩ PGOOD PGOOD OUTL 0.47µF External MOS Gate Waveforms for Each Mode BD9035AEFV-C Application Circuit Buck DC/DC BD9035AEFV-C Efficiency [%] Input Voltage BD9035AEFV Conventional Control Output Automatic control improves efficiency during buck operation The buck-boost system maintains the output voltage even when the Input Voltage < Output Voltage Output Current [A] BD9035AEFV-C Efficiency vs Load Current VIN=12V , VOUT=6V , f=350kHz HTSSOP-B24 BD9035AEFV-C Input vs Output Voltage VIN=10V , VOUT=8V , f=350kHz BD9035AEFV-C Number of Channels 1 Output Control Method Pch Controller Nch Controller Push-Pull Push-Pull 40 － Min. Max. 3.8 30 Output Voltage (V) Typ. Variable ±1.5 Switching Frequency Range (kHz) 100 ～ 600 Operating Circuit Control Current Mode (mA) Typ. Accuracy (%) ±7 Voltage 7 Power Good Part No. Reference (Output) Voltage Accuracy (%) ✓ External Synchronization Variable Soft Start Synchronous Rectification Simple Light Load Mode Over Current Protection Thermal Shutdown Overvoltage Protection Functions Input Voltage Maximum Output Range Input Current (V) Voltage (A) (V) Max. ✓ ✓ - - SR SR ✓ Operating Temperature Range (ﾟC) Package -40 ～ 125 HTSSOP-B24 ※ SR：Self Recovery Automotive Regulator Selection Guide 12 Automotive Step-Down Linear Regulator Lineup Primary 【Linear】 BDxxHC5MEFJ-M 1.5 Secondary 【Linear】 Rated Voltage Rated Voltage BDxxGC0MEFJ-M BDxxHC0MEFJ-M BDxxIC0MEFJ-M 1.0 4.0 or Vo+1 4.0 or Vo+1 BD90C0AWFP/FP/WHFP/HFP/WFP2/FP2-C BD80C0AWFP / FP / WHFP / HFP / WFP2 / FP2-C BD50C0AWFP / FP / WHFP / HFP / WFP2 / FP2-C BD33C0AWFP / FP / WHFP / HFP / WFP2 / FP2-C BD00C0AWFP / FP / WHFP / HFP / WFP2 / FP2-C . BD00C0AWFPS-M . Output Current （A） BDxxGA5MEFJ-M BDxxHA5MEFJ-M BDxxIA5MEFJ-M BD3570 / 73YHFP-M , BD3572 / 75YFP / YHFP-M BD3571 / 74YHFP-M BD733L5FP-C BD750L5FP-C BD433M5WFPJ / WFP2 / FP / FP2-C BD450M5WFPJ / WFP2 / FP / FP2-C BD3020 / 21HFP-M BD4275FP2 / FPJ-C 0.5 BDxxGA3MEFJ-M / -C BDxxHA3MEFJ-M / -C 0.3 BD3650FP-M BD4275FP2 / FPJ-C BD433M5WFPJ / WFP2 / FP / FP2-C BD450M5WFPJ / WFP2 / FP / FP2-C 0.25 BUxxSD2MG-M BD733L2EFJ / FP / FP3-C BD750L2EFJ / FP / FP3-C BD433M2WEFJ / WFP / EFJ / FP3-C BD450M2WEFJ / WFP / EFJ / FP3-C BD3010AFV-M BD4269FJ-C 0.2 BD433M2WEFJ / WFP / EFJ / FP3-C BD450M2WEFJ / WFP / EFJ / FP3-C 0.1 1.7 2.4 2.6 2.69 3.5 3.6 3.8 3.9 4.0 4.17 4.3 4.37 4.5 4.6 5.0 5.5 5.6 5.8 5.9 6.0 7.0 8.0 9.0 10 14 15 24 26.5 30 33 35 36 40 42 45 50 Input Rail Voltage （V） Automotive Regulator Selection Guide 13 Automotive Linear Regulator Product Family Input Primary Secondary Maximum Current to 0.5A 1A MAX Function Single Function Multi Function Circuit Current Ultra Low 6µA (Typ.) Low Above 30µA Rated Voltage 45V Max. BD733L5(3.3V)FP-C BD750L5(5.0V)FP-C 50VMAX,0.5A BD733L2(3.3V) BD750L2(5V) EFJ/FP/FP3-C 50VMAX, 0.2A Rated Voltage 50V Max. 15V Max. BD433M5(3.3V) BD450M5(5V) WFPJ/WFP2/FP/ FP2-C BD3570Y(3.3V) BD3571Y(5V)HFP-M BD3572Y(Variable) FP/HFP-M BD3020/21HFP-M 45VMAX, 0.5A 50VMAX, 0.5A without Switch BD3010AFV-M BD433M2(3.3V) BD450M2(5V) WEFJ/WFP3/EFJ/ FP3-C 45VMAX, 0.2A BD3573Y(3.3V) BD3574Y(5V)HFP-M BD3575Y(Variable) FP/HFP-M 50VMAX, 0.5A with Switch 50VMAX, 0.5A LDO with Voltage Detector and Watchdog Timer 50VMAX, 0.2A LDO with Voltage Detector and Watchdog Timer BD4275FP2/FPJ-C 45VMAX, 0.5A LDO with Voltage Detector BD90C0A(9V) BD80C0A(8V) BD50C0A(5V) BD33C0A(3.3V) BD00C0A(Variable) WFP/FP/WHFP/ HFP/WFP2/FP2-C Up to 10V Max. BDxxGC0MEFJ BDxxGA5MEFJ BDxxGA3MEFJ -M/-C BDxxHC5MEFJ BDxxHC0MEFJ BDxxHA5MEFJ BDxxHA3MEFJ-M/-C 15VMAX, 0.3/0.5/1.0A 10VMAX, 0.3/0.5/1.0/1.5A BDxxIC0MEFJ BDxxIA5MEFJ-M/-C 26.5VMAX, 1.0A 7VMAX, 0.5/1.0A BD00C0AWFPS-M BUxxSD2MG-M 26.5VMAX, 1.0A 6.5VMAX, 0.2A BD4269FJ-C 45VMAX, 0.2A LDO with Voltage Detector P15,16 P16 P17 Primary Linear Regulators Automotive Regulator Selection Guide P17 P18 P21,22 P21,22 Secondary Linear Regulators 14 Primary Linear Regulators (BD7xxLxxxx-C Series） Low Quiescent Current Solutions The BD7xxLxxxx-C series of low quiescent current regulators features a rated voltage of 50V, 200/500mA output current, an output voltage accuracy of ±2%, and current consumption of only 6μA (Typ.). There regulators are therefore ideal for applications requiring a direct connection to the battery and a low current consumption. Ceramic capacitors can be used for compensation of the output capacitor phase. Furthermore, these ICs also feature overcurrent protection to protect the device from damage caused by short-circuiting and an integrated thermal shutdown to protect the device from Overheating at overload conditions. Battery BD733L5FP-C BD750L2FP-C BD750L2EFJ-C BD750L2FP3-C BD750L5FP-C 3.3V, 0.2A VCC MCU, CAN BD7xxLxxxx-C Application Circuit 3.3V, 0.5A 5V, 0.2A 5V, 0.5A MCU, CAN 90 MCU, CAN 30μA MCU, CAN Ultra-low quiescent current: 6µA (Typ.) Output transistor ： Low saturation Pch DMOS (3Ω Typ.) VCC maximum voltage ： 50V Output current ： 200mA (Max.) / 500mA (Max.) Output voltage ： 3.3V±2% / 5.0V±2% Enables low ESR ceramic capacitors to be used for output phase compensation Integrated output current control circuit protects the IC against damage due to short circuits Built-in thermal shutdown prevents IC overheating due to overload conditions. HTSOPJ-8 BD733L2EFJ-C BD750L2EFJ-C Automotive Regulator Selection Guide 4.7µF or higher ＊the capacitance of 4.7μF or higher is maintained at the intended applied voltage and temperature range. GND BD357x: 80μA(Typ.) @Io=100mA Quiescent current reduced 80% (@Io=0mA) 60 Product Overview: BD7xxLxxxx-C TO252-3 BD733L2FP-C BD733L5FP-C BD750L2FP-C BD750L5FP-C VOUT Iq [µA] 12V BD733L2FP-C BD733L2EFJ-C BD733L2FP3-C BD7xxLxxxx-C 6μA Conventional (BD357xY) Under Development (BD7xxLx) Quiescent current reduced 92% (@Io=100mA) 30 BD7xxLx: 6μA (Typ.) @Io=100mA 0 0 50 Io [mA] 100 BD7xxLxxxx-C Quiescent Current Comparison SOT223-4 BD733L2FP3-C BD750L2FP3-C ※Under development 15 Primary Linear Regulator Selection Guide Output Voltage Accuracy (%) Dropout Voltage (V) Typ. Circuit Current (µA) Typ. Others - - - - - - - TO252-3 - - - - - - - HTSOP-J8 - - - - - - - SOT223-4 Max. BD733L2FP-C BD733L2EFJ-C Shutdown Switch WDT (Switchable) Output Current (A) Max. WDT Min. Output Voltage (V) Typ. Detection Accuracy (%) Rated Voltage (V) 4.5V Detection Voltage Part No. Variable Detection Voltage Functions Input Voltage Range (V) 4.37 0.20 [email protected] Operating Temperature Range (ﾟC) Package 3.3 BD733L2FP3-C BD733L5FP-C 4.17 50 0.50 45 ±2 [email protected] 5.8 BD750L2EFJ-C [email protected] 0.20 - - - - - - - - - - - - - - TO252-3 - - - - - - - HTSOP-J8 - - - - - - - SOT223-4 - - - - - - - TO252-3 - - - - - - - HTSOP-J8 - - - - - - - SOT223-4 Internal - - - - - - HTSOP-J8 Internal - - - - - - SOT223-4 - - - - - - - TO252-3 - - - - - - - TO263-3 Internal - - - - - - TO263-5 Internal - - - - - - TO252-J5 - - - - - - - HTSOP-J8 - - - - - - - SOT223-4 Internal - - - - - - HTSOP-J8 Internal - - - - - - SOT223-4 - - - - - - - TO252-3 - - - - - - - TO263-3 Internal - - - - - - TO263-5 Internal - - - - - - TO252-J5 6 BD750L2FP-C TO252-3 -40～+125@Ta 5.0 BD750L2FP3-C BD750L5FP-C 5.6 BD433M2EFJ-C 0.50 4.3 @0.20A / 3.9 @0.10A BD433M2FP3-C BD433M2WEFJ-C BD433M2WFP3-C [email protected] 0.20 [email protected] 40 3.3 BD433M5FP-C 4.6 @0.50A / 4.0 @0.25A BD433M5FP2-C BD433M5WFP2-C BD433M5WFPJ-C 45 BD450M2EFJ-C BD450M2FP3-C BD450M2WEFJ-C BD450M2WFP3-C 0.50 [email protected] 38 ±2 42 5.8 @0.20A / 5.5 @0.10A 0.20 -40～+150@Tj [email protected] 40 5.0 BD450M5FP-C BD450M5FP2-C BD450M5WFP2-C BD450M5WFPJ-C 5.9 @0.50A / 5.5 @0.25A 0.50 [email protected] 38 Under development Automotive Regulator Selection Guide 16 Primary Linear Regulator Selection Guide Functions Variable Detection Voltage 4.5V Detection Voltage Detection Accuracy (%) WDT WDT (Switchable) Input Voltage Range (V) BD3572YFP-M 4.5 Variable (2.8-12.0) [email protected] - - - - - - - BD3575YFP-M 4.5 Variable (2.8-12.0) [email protected] Internal - - - - - - BD3570YHFP-M 4.5 3.3 - - - - - - - Part No. Rated Voltage (V) Min. Output Voltage (V) Typ. Output Current (A) Max. Output Voltage Accuracy (%) Dropout Voltage (V) Typ. Circuit Current (µA) Typ. Shutdown Switch Others Max. Operating Temperature Range (ﾟC) Package TO252-5 BD3571YHFP-M 5.5 50 5.0 36 0.50 BD3572YHFP-M 4.5 Variable (2.8-12.0) BD3573YHFP-M 4.5 3.3 BD3574YHFP-M 5.5 5.0 ±2 [email protected] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ✓ - ±2 ✓ - - ✓ ±2 - ✓ ✓ 4.62 V -2.6 / +2.8 - - ±2.6 - 30 -40～+125@Ta HRP5 Internal [email protected] BD3575YHFP-M BD3650FP-M 4.5 Variable (2.8-12.0) 36 5.6 30 5.0 0.30 ±2 [email protected] 500 - - 50 5.6 36 5.0 0.50 ±2 [email protected] 80 - - BD3020HFP-M BD3021HFP-M BD3010AFV-M 50 6.0 45 [email protected] / [email protected] 45 5.5 45 BD4275FP2-C BD4275FPJ-C BD4269FJ-C 45 Automotive Regulator Selection Guide 36 5.0 5.0 5.0 0.20 0.50 0.20 ±2 ±2 ±2 [email protected] [email protected] [email protected] 80 65 70 - - - - ✓ - ✓ ±3 -40～+125@Ta HRP7 -40～+125@Ta HRP7 ✓ -40～+125@Ta - -40～+125@Ta -40～+150@Tj - TO252-3 -40～+125@Ta -40～+150@Tj SSOP-B20 TO263-5 TO252-J5 SOP-J8 17 Functions Output Voltage (V) Typ. Output Current (A) Max. Output Voltage Accuracy (%) Dropout Voltage (V) Typ. Circuit Current (µA) Typ. Shutdown Switch Others Variable Detection Voltage 4.5V Detection Voltage Detection Accuracy (%) WDT WDT (Switchable) Input Voltage Range (V) Variable (3.0-15.0) 1.00 ±3 0.30 @0.50A Vo ≥ 5.0 500 Internal - - - - - - - - - - - - - TO252-3 - - - - - - - TO263-3 BD33C0AHFP-C - - - - - - - HRP5 BD50C0AFP-C - - - - - - - TO252-3 - - - - - - - TO263-3 - - - - - - - HRP5 - - - - - - - TO252-3 - - - - - - - TO263-3 BD80C0AHFP-C - - - - - - - HRP5 BD90C0AFP-C - - - - - - - TO252-3 - - - - - - - TO263-3 - - - - - - - HRP5 - - - - - - - - - - - - - - - - - - HRP5 - - - - - - TO252-5 - - - - - - TO263-5 - - - - - - HRP5 - - - - - - TO252-5 - - - - - - TO263-5 - - - - - - HRP5 - - - - - - TO252-5 - - - - - - TO263-5 BD80C0AWHFP-C - - - - - - HRP5 BD90C0AWFP-C - - - - - - TO252-5 - - - - - - TO263-5 - - - - - - HRP5 Part No. BD00C0AWFPS-M Rated Voltage (V) 35 Min. Max. 4.0 or Vo+1.0 26.5 BD33C0AFP-C BD33C0AFP2-C 4.3 BD50C0AFP2-C 3.3 6.0 - 5.0 BD50C0AHFP-C BD80C0AFP-C BD80C0AFP2-C 9.0 BD90C0AFP2-C 0.30 @0.50A 8.0 10.0 9.0 BD90C0AHFP-C BD00C0AWFP-C BD00C0AWFP2-C BD00C0AWHFP-C 35 4.0 or Vo+1.0 26.5 Variable (1.0-15.0) 1.00 ±3 [email protected] Vo ≥ 5.0 500 BD33C0AWFP-C BD33C0AWFP2-C 4.3 3.3 - BD33C0AWHFP-C BD50C0AWFP-C BD50C0AWFP2-C 6.0 5.0 Internal BD50C0AWHFP-C BD80C0AWFP-C BD80C0AWFP2-C BD90C0AWFP2-C 9.0 10.0 BD90C0AWHFP-C Automotive Regulator Selection Guide 8.0 9.0 [email protected] Operating Temperature Range (ﾟC) Package -40～+105@Ta TO252S-5 TO252-5 -40～+125@Ta TO263-5 18 Primary Linear Regulator Selection Guide TO252-3 TO252-5 TO252S-5 TO263-3 TO263-5 SOT223-4 Φ2.0 E-PIN Automotive Regulator Selection Guide TO252-J5 Φ2.0 E-PIN 19 HRP5 Automotive Regulator Selection Guide HRP7 HTSOP-J8 SSOP-B20 20 Secondary Linear Regulator Selection Guide 【BDxxG/H/IxxMEFJ/HFN-M/-C】 【BUxxSD2MG-M】 Absolute Maximum Rating G：15V H：10V I：7V Absolute Maximum Rating 6.5V BUxxSD2MG-M BDxxG/H/IxxMEFJ/HFN -M/-C Vcc Vo BDxxG/H/IxxMEFJ/HFN -M/-C Vcc Vo GND EN FIN GND FIN STBY Variable Output Type Application Circuit Fixed Output Type Application Circuit Part No. Explanation/Overview: BDxxG/H/IxxEEFJ/HFN-M/-C B D 0 0 G Output Voltage Series (ABS max 00: ADJ xx: Fixed input voltage) G: 15V H: 10V I: 7V x x Output Current A3 : 0.3A A5 : 0.5A C0 : 1.0A C5 : 1.5A M E F J Package EFJ: HTSOP-J8 HFN:HSON8 - M Automotive Grade M: Automotive Shutdown circuit current: 0µA (Typ.) Output voltage accuracy: -M=±3% (Ta: -40ﾟC ~ +105ﾟC) -C=±2% (Ta: -40ﾟC ~ +125ﾟC) Internal standby function Enables the use of low ESR ceramic capacitors for output phase compensation (1.0µF Min.) Integrated output current control circuit protects the IC from damage due to output short circuits Built-in thermal shutdown to prevents IC overheating during overload Automotive Regulator Selection Guide VOUT Vo_s FB EN VIN GND Application Circuit Product Overview: BUxxSD2MG-M Input Voltage Range: 1.7V to 6.0V (6.5V Rating) Low Quiescent Current: 35µA (Typ.) Output Current: 200mA (Max.) Output Voltage Accuracy: ±2% (Ta: -40ﾟC to +105ﾟC) Low Output Noise: 30µVrms (10-100kHz) High PSRR (Ripple Rejection): 70dB Typ.@1kHz Integrated Standby function Enables the use of low ESR ceramic capacitors for output phase compensation (0.47µF Min.) Integrated overcurrent protection protects the IC from damage due to output short circuits Built-in thermal shutdown function prevents IC overheating during overload HTSOPJ-8 HSON8 SSOP5 21 Secondary Linear Regulator Selection Guide BDxxGC0MEFJ-M 15 4.5 14 BDxxGA5MEFJ-M 15 4.5 14 BDxxGA3MEFJ-M 15 4.5 14 Variable (1.5-13.0) / 1.5 / 1.8 / 2.5 / 3.0 / 3.3 / 5.0 / 6.0 / 7.0 / 8.0 / 9.0/10.0/12.0 BDxxGA3MEFJ-C 15 4.5 14 Variable / 3.3 / 5.0 BDxxHC5MEFJ-M 10 4.5 8.0 BDxxHC0MEFJ-M 10 4.5 8.0 BDxxHA5MEFJ-M 10 4.5 8.0 BDxxHA3MEFJ-M 10 4.5 8.0 BDxxHA3MEFJ-C 10 4.5 8.0 BDxxIC0MEFJ-M 7 2.4 5.5 BDxxIA5MEFJ-M 7 2.4 5.5 BUxxSD2MG-M 6.5 1.7 6.0 HTSOP-J8 Automotive Regulator Selection Guide Variable (1.5-7.0) / 1.5 / 1.8/ 2.5 / 3.0 / 3.3/ 5.0 / 6.0 / 7.0 Variable (0.8-4.5) / 1.0 / 1.2 / 1.5 / 1.8 / 2.5 / 3.0 / 3.3 1.2 / 1.5 / 1.8 / 2.5 / 2.8 / 3.0 / 3.3 Output Voltage Accuracy (%) Dropout Voltage (V) Typ. Circuit Current (µA) Typ. Shutdown Switch Others WDT (Switchable) Max. Output Current (A) Max. WDT Min. Output Voltage (V) Typ. Detection Accuracy(%) Maximum Voltage (V) 4.5V Detection Voltage Part No. Variable Detection Voltage Functions Input Voltage Range (V) 1.00 ±3 [email protected] 600 Internal - - - - - - 0.50 ±3 [email protected] 600 Internal - - - - - - 0.30 ±3 [email protected] 600 Internal - - - - - - 0.30 ±2 [email protected] 600 Internal - - - - - - 1.50 ±3 [email protected] 600 Internal - - - - - - 1.00 ±3 [email protected] 600 Internal - - - - - - 0.50 ±3 [email protected] 600 Internal - - - - - - 0.30 ±3 [email protected] 600 Internal - - - - - 0.30 ±2 [email protected] 600 Internal - - - - - - 1.00 ±3 [email protected] 250 Internal - - - - - - Operating Temperature Range (ﾟC) Package HTSOP-J8 -40～+105@Ta HTSOP-J8 HTSOP-J8 -40～+125@Ta HTSOP-J8 HTSOP-J8 HTSOP-J8 -40～+105@Ta HTSOP-J8 HTSOP-J8 -40～+125@Ta HTSOP-J8 HTSOP-J8 -40～+105@Ta 0.50 ±3 [email protected] 250 Internal - - - - - - 0.20 ±2 0.28 / 0.18 / 0.15 / 0.10 / 0.085 @0.10A 33 Internal - - - - - - HTSOP-J8 -40～+105@Ta SSOP5 SSOP5 22 Leveraging Power Supply IC Characteristics Thermal Resistance · Characteristics The following definitions comply with JEDEC Standard JESD51 Symbol Definition Applications θJA Thermal resistance between junction temperature (TJ) and ambient temperature (TA) when the package is mounted on a PCB. Comparison of heat dissipation characteristics between different packages. ΨJT Thermal characteristics parameter representing the temperature difference between the junction temperature (TJ) and the temperature of the center of the top surface of the package (TT), caused by the power consumption (P) of the device. Estimation of the junction temperature. θJC-TOP The thermal resistance between the junction temperature (TJ) and the top surface of the package (TC-TOP). Heat is dissipated only through the top surface of the package – all other pathways are insulated. Can be used in simulations using the 2-resistance model. θJC-BOT The thermal resistance between the junction temperature (TJ) and the bottom surface of the package (TC-BOT). Heat is dissipated only through the bottom surface of the package – all other pathways are insulated. Used to estimate the junction temperature for packages where metal is exposed at the bottom for heat dissipation, since the majority of heat is dissipated through the bottom. Formula θJA = (TJ – TA) / P ΨJT = (TJ – TT) / P θJC-TOP = (TJ – TC-TOP) / P θJC-BOT = (TJ – TC-BOT) / P Note 1: θJA and ΨJT are obtained when mounted on a JEDEC board. Note 2: Data provided as θJC conventionally is ΨJT in this definition. Automotive Regulator Selection Guide 23 Thermal Resistance · Characteristics Cf. JEDEC（JESD51） ●θJA: Thermal resistance from the junction to the ambient environment (Heat conduction and radiation through multiple pathways) ●ψJT：Thermal characteristics parameter from the junction to the center of the top surface of the package (Heat conduction not only through the top surface, but also any surface) Temperature at the center of the top of the package: TT Ambient Temperature：TA Top Surface of Package Package (Mold) θJA ΨJT Thermal Conduction Thermal Resistance (Low) Thermal Resistance (High) Heat conduction and radiation to the air Junction Temperature：TJ Junction Chip Package (Lead) Package (Island) Copper Layers PCB (FR4) Bottom Surface of Package ※Image: HTSOP-J8 package ●θJC-TOP: Thermal resistance from the junction to the top surface of the package. (Heat radiated only through top of package. Other pathways insulated) Cold Plate Temperature at the top of package：TC-TOP Junction Temperature：TJ Automotive Regulator Selection Guide ●θJC-BOT: Thermal resistance from the junction to the bottom surface of the package. (Heat radiated only through the bottom of package. Other pathways insulated.) Junction Temperature：TJ Thermal Resistance： θJC-TOP Temperature at the bottom of package: TC-BOT Thermal Resistance ：θJC-BOT Cold Plate 24 Leveraging Power Supply IC Characteristics Noise Characteristics · Tolerance It is important that electronic devices: 1) Do not interfere with other devices, and 2) Are able to maintain normal performance even when receiving interference. The need to balance both of these requirements gives rise to the term Electromagnetic Compatibility, which can be broken down into 2 components – EMI and EMS. EMI Standard CISPR25 Automotive Equipment Test VDD Conductive Noise Radiant Noise (In the air) Signal × EMI Standard ISO11452 Automotive Equipment Test Conductive Noise Operating the target IC may cause noise to be generated, which can lead to operation stoppage due to system and/or peripheral circuit malfunction. To prevent this, delicate, complex circuit design is necessary. VSS System A Conversely, peripheral IC and/or system operation may generate noise which can interfere with the target IC and lead to malfunction and cause operation to fail. In this case robust circuit design is required. EMI Standard CISPR25 Automotive Equipment Test Conductive Noise System B Radiant Noise (In the air) Conducive Noise × EMI Standard ISO11452 Automotive Equipment Test Harness, etc. Radiant Noise Automotive Regulator Selection Guide 25 PCB Design Checkpoints Possible Concerns Regarding Improper DC/DC PCB Layout Notes on Thermal Relief Please consider capacitor layout to minimize noise. Slit Recommendations on PCB Design 1. Power lines should be as short and wide as possible. 2. Please place the input decoupling (ceramic) capacitor as close as possible to the IC power supply-GND pin. (GND side of the IC power supply-SBD for chopper types) ⇒ Shortest AC current path 3. The resistor RT for determining the oscillating frequency should be located near to the GND pin (reference GND). 4. Position the feedback resistor for variable output voltage types as close to the feedback pin, shortening the wiring from the feedback resistor to the feedback terminal. 5. The feedback resistor should be located far from noise sources such as inductors and switching lines. It is good practice for dual-sided boards to place power components on the same side as the IC and the rest of the components on the other side. (When doing so, please do not pass the feedback line under the inductor.) 6. Separating power GND (SBD, input/output capacitor GND) and reference GND (RT, GND) will minimize the effects of switching noise. However, please make them common through a GND plane. 7. Do not use thermal relief whenever possible. ⇒ Deteriorating high frequency characteristics Automotive Regulator Selection Guide Slit ESL Via In the above layout since the ESL component of the PCB is added, the resonant frequency from the formula on Page 28 moves to the low frequency side. As a result, it may not be possible to achieve the desired noise removal effects. ESL (PCB) Ideal ESL (Via) Ideal Layout Actual 26 Leveraging Power Supply IC Characteristics Conductive Noise Countermeasure Example AM Band ESR=0.16Ω/DCR=0.33Ω CB～FM Band AM Band CB～FM Band Refer to SimSurfing of MURATA 415ｋHz From the attenuation characteristics of the low pass filter, an attenuation of about 60dB is expected at a switching frequency of 415kHz (harmonics as well) Attenuation characteristics as seen from the DUT side of the low pass filter Impedance of the 0.1µF /50v bypass capacitor Adding a 0.1µF decoupling capacitor decreases impedance between 10M and 100MHz MURATA様 SimSurfingより Adding a 2200pF decoupling capacitor decreases impedance between 100M and 200MHz. Clears CISPR25 Class5 in all bands Impedance of Bypass Capacitor 2200pF /50v Automotive Regulator Selection Guide 27 Appendix : Waveform Data Acquisition Techniques 20mV/div@AC 2.0µs/div 400ns/div 20ns/div 400ns/div 20ns/div GND The waveforms at the top were obtained using a GND lead attached to a probe. The waveforms below were taken by measuring the output ripple voltage using a tin plated wire wound to GND in a short distance. Although at 2.0µs/div there does not appear to be a large difference, upon magnification spikes can be seen. These spikes are largely due to the resonance of the inductance of the GND lead and capacitance of the probe input. 20mV/div@AC 2.0µs/div 1 Resonant Frequency = 2*π√(Lg * Cp) Cp 10MΩ Lg：Probe Ground Lead Inductance Cp：Probe Input Capacitance Lg Object to Be Measured Automotive Regulator Selection Guide Probe Equivalent Circuit In order to prevent such resonance, optimized probing must be conducted where Cp and Lg in the equivalent circuit is as small as possible. Since the input capacitance of a standard passive probe is limited to around 10pF, it is clear that reducing the GND lead inductance Lg (nH/mm) will lead to improved measurement accuracy. In order to further improve accuracy use of an active probe (FET probe) is recommended. 28 INDEX Part No. Page No. Part No. Page No. Part No. Page No. Part No. Page No. Part No. Page No. ●BD00C0AWFP-C 13,14,18 ○BD25GC0MEFJ-M 13,14,21,22 ●BD3572HFP-M 13,14,17 ○BD60GA5MEFJ-M 13,14,21,22 ◇BD90538EFJ-C 3,4,9,10,11 ●BD00C0AWFP2-C 13,14,18 ○BD25HA3MEFJ-C 13,14,21,22 ●BD3573HFP-M 13,14,17 ○BD60GC0MEFJ-M 13,14,21,22 ◇BD90540EFV-C 3,4,9,10,11 ●BD00C0AWFPS-M 13,14,18 ○BD25HA3MEFJ-M 13,14,21,22 ●BD3574HFP-M 13,14,17 ○BD60HA3MEFJ-C 13,14,21,22 ◇BD90540MUV-C 3,4,9,10,11 ●BD00C0AWHFP-C 13,14,18 ○BD25HA5MEFJ-M 13,14,21,22 ●BD3575FP-M 13,14,17 ○BD60HA3MEFJ-M 13,14,21,22 ◇BD90571EFJ-C 3,4,9,10,11 ○BD00GA3MEFJ-C 13,14,21,22 ○BD25HC0MEFJ-M 13,14,21,22 ●BD3575HFP-M 13,14,17 ○BD60HA5MEFJ-M 13,14,21,22 ◆BD9060F-C ○BD00GA3MEFJ-M 13,14,21,22 ○BD25HC5MEFJ-M 13,14,21,22 ●BD3650FP-M 13,14,17 ○BD60HC0MEFJ-M 13,14,21,22 ◆BD9060HFP-C ○BD00GA5MEFJ-M 13,14,21,22 ○BD25IA5MEFJ-M 13,14,21,22 ●BD4269FJ-C 13,14,17 ○BD60HC5MEFJ-M 13,14,21,22 ◆BD90610EFJ-C 3,4,7,8 ○BD00GC0MEFJ-M 13,14,21,22 ○BD25IC0MEFJ-M 13,14,21,22 ●BD4275FP2-C 13,14,17 ○BD70GA3MEFJ-M 13,14,21,22 ◆BD90620EFJ-C 3,4,7,8 ○BD00HA3MEFJ-C 13,14,21,22 ●BD3010AFV-M 13,14,17 ●BD4275FPJ-C 13,14,17 ○BD70GA5MEFJ-M 13,14,21,22 ◆BD90640EFJ-C 3,4,7,8 ○BD00HA3MEFJ-M 13,14,21,22 ●BD3020HFP-M 13,14,17 ●BD433M2FP-C 13,14,16 ○BD70GC0MEFJ-M 13,14,21,22 ◆BD90640HFP-C 3,4,7,8 ○BD00HA5MEFJ-M 13,14,21,22 ●BD3021HFP-M 13,14,17 ●BD433M2FP2-C 13,14,16 ○BD70HA3MEFJ-C 13,14,21,22 ◆BD90730NUX-C ○BD00HC0MEFJ-M 13,14,21,22 ○BD30GA3MEFJ-M 13,14,21,22 ●BD433M2WFP2-C 13,14,16 ○BD70HA3MEFJ-M 13,14,21,22 ●BD90C0AFP-C 13,14,18 ○BD00HC5MEFJ-M 13,14,21,22 ○BD30GA5MEFJ-M 13,14,21,22 ●BD433M2WFPJ-C 13,14,16 ○BD70HA5MEFJ-M 13,14,21,22 ●BD90C0AFP2-C 13,14,18 ○BD00IA5MEFJ-M 13,14,21,22 ○BD30GC0MEFJ-M 13,14,21,22 ●BD433M5EFJ-C 13,14,16 ○BD70HC0MEFJ-M 13,14,21,22 ●BD90C0AHFP-C 13,14,18 ○BD00IC0MEFJ-M 13,14,21,22 ○BD30HA3MEFJ-C 13,14,21,22 ●BD433M5FP3-C 13,14,16 ○BD70HC5MEFJ-M 13,14,21,22 ●BD90C0AWFP-C 13,14,18 ○BD10IA5MEFJ-M 13,14,21,22 ○BD30HA3MEFJ-M 13,14,21,22 ●BD433M5WEFJ-C 13,14,16 ●BD733L2FP-C 13,14,15,16 ●BD90C0AWFP2-C 13,14,18 ○BD10IC0MEFJ-M 13,14,21,22 ○BD30HA5MEFJ-M 13,14,21,22 ●BD433M5WFP3-C 13,14,16 ●BD733L2EFJ-C 13,14,15,16 ●BD90C0AWHFP-C 13,14,18 ○BD12IA5MEFJ-M 13,14,21,22 ○BD30HC0MEFJ-M 13,14,21,22 ●BD450M2FP-C 13,14,16 ●BD733L2FP3-C 13,14,15,16 ◆BD99010EFV-M 3,4,5,6,8 ○BD12IC0MEFJ-M 13,14,21,22 ○BD30HC5MEFJ-M 13,14,21,22 ●BD450M2FP2-C 13,14,16 ●BD733L5FP-C 13,14,15,16 ◆BD99011EFV-M 3,4,5,6,8 ○BD15GA3MEFJ-M 13,14,21,22 ○BD30IA5MEFJ-M 13,14,21,22 ●BD450M2WFP2-C 13,14,16 ●BD750L2FP-C 13,14,15,16 ○BU12SD2MG-M 13,14,21,22 ○BD15GA5MEFJ-M 13,14,21,22 ○BD30IC0MEFJ-M 13,14,21,22 ●BD450M2WFPJ-C 13,14,16 ●BD750L2EFJ-C 13,14,15,16 ○BU15SD2MG-M 13,14,21,22 ○BD15GC0MEFJ-M 13,14,21,22 ●BD33C0AFP-C 13,14,18 ●BD450M5EFJ-C 13,14,16 ●BD750L2FP3-C 13,14,15,16 ○BU18SD2MG-M 13,14,21,22 ○BD15HA3MEFJ-C 13,14,21,22 ●BD33C0AFP2-C 13,14,18 ●BD450M5FP3-C 13,14,16 ●BD750L5FP-C 13,14,15,16 ○BU25SD2MG-M 13,14,21,22 ○BD15HA3MEFJ-M 13,14,21,22 ●BD33C0AHFP-C 13,14,18 ●BD450M5WEFJ-C 13,14,16 ●BD80C0AFP-C 13,14,18 ○BU28SD2MG-M 13,14,21,22 ○BD15HA5MEFJ-M 13,14,21,22 ●BD33C0AWFP-C 13,14,18 ●BD450M5WFP3-C 13,14,16 ●BD80C0AFP2-C 13,14,18 ○BU30SD2MG-M 13,14,21,22 ○BD15HC0MEFJ-M 13,14,21,22 ●BD33C0AWFP2-C 13,14,18 ●BD50C0AFP-C 13,14,18 ●BD80C0AHFP-C 13,14,18 ○BU33SD2MG-M 13,14,21,22 ○BD15HC5MEFJ-M 13,14,21,22 ●BD33C0AWHFP-C 13,14,18 ●BD50C0AFP2-C 13,14,18 ●BD80C0AWFP-C 13,14,18 ○BD15IA5MEFJ-M 13,14,21,22 ○BD33GA3MEFJ-C 13,14,21,22 ●BD50C0AHFP-C 13,14,18 ●BD80C0AWFP2-C 13,14,18 ○BD15IC0MEFJ-M 13,14,21,22 ○BD33GA3MEFJ-M 13,14,21,22 ●BD50C0AWFP-C 13,14,18 ●BD80C0AWHFP-C 13,14,18 ○BD18GA3MEFJ-M 13,14,21,22 ○BD33GA5MEFJ-M 13,14,21,22 ●BD50C0AWFP2-C 13,14,18 ◆BD9015KV-M ○BD18GA5MEFJ-M 13,14,21,22 ○BD33GC0MEFJ-M 13,14,21,22 ●BD50C0AWHFP-C 13,14,18 ◆BD9016KV-M ○BD18GC0MEFJ-M 13,14,21,22 ○BD33HA3MEFJ-C 13,14,21,22 ○BD50GA3MEFJ-C 13,14,21,22 ◆BD9035AEFV-C 3,4,12 ○BD18HA3MEFJ-C 13,14,21,22 ○BD33HA3MEFJ-M 13,14,21,22 ○BD50GA3MEFJ-M 13,14,21,22 ◇BD90520EFV-C 3,4,9,10,11 ○BD18HA3MEFJ-M 13,14,21,22 ○BD33HA5MEFJ-M 13,14,21,22 ○BD50GA5MEFJ-M 13,14,21,22 ◇BD90522EFJ-C 3,4,9,10,11 ○BD18HA5MEFJ-M 13,14,21,22 ○BD33HC0MEFJ-M 13,14,21,22 ○BD50GC0MEFJ-M 13,14,21,22 ◇BD90525EFJ-C 3,4,9,10,11 ○BD18HC0MEFJ-M 13,14,21,22 ○BD33HC5MEFJ-M 13,14,21,22 ○BD50HA3MEFJ-C 13,14,21,22 ◇BD90528EFJ-C 3,4,9,10,11 ○BD18HC5MEFJ-M 13,14,21,22 ○BD33IA5MEFJ-M 13,14,21,22 ○BD50HA3MEFJ-M 13,14,21,22 ◇BD90528EFJ-C 3,4,9,10,11 ○BD18IA5MEFJ-M 13,14,21,22 ○BD33IC0MEFJ-M 13,14,21,22 ○BD50HA5MEFJ-M 13,14,21,22 ◇BD90530EFV-C 3,4,9,10,11 ○BD18IC0MEFJ-M 13,14,21,22 ●BD3570HFP-M 13,14,17 ○BD50HC0MEFJ-M 13,14,21,22 ◇BD90530MUV-C 3,4,9,10,11 ○BD25GA3MEFJ-M 13,14,21,22 ●BD3571HFP-M 13,14,17 ○BD50HC5MEFJ-M 13,14,21,22 ◇BD90532EFJ-C 3,4,9,10,11 ○BD25GA5MEFJ-M 13,14,21,22 ●BD3572FP-M 13,14,17 ○BD60GA3MEFJ-M 13,14,21,22 Automotive Regulator Selection Guide 3,4,8 3,4,8 3,4,8 3,4,8 3,4,8 3,4,9,10,11 ◇BD90535EFJ-C ◆ Primary Switching ◇ Secondary Switching ● Primary Linear ○ Secondary Linear 29 Automotive Regulator Selection Guide 30 Automotive Regulator Selection Guide 31 AEA57-10-003 ©2015 Mar. ROHM Co., Ltd. All rights reserved. Application Engineering Div.