48V DC/DC Converter Table of Contents Current Sensing, Voltage Divider.................................................................................................................................... 3 DC/DC Converter, DC/DC Buck /Boost Converter.......................................................................................................... 4 Input Filtering, DC/DC Buck/Boost Converter................................................................................................................ 5 Input Filtering, Filter capacitor......................................................................................................................................... 6 Output Filtering, EMI Filter............................................................................................................................................... 7 Protection, TVS Diode....................................................................................................................................................... 8 page 1 48V DC/DC Converter VISHAY Components used for 48V DC/DC Converter include: • Power MOSFETS • TVS • Switching Diodes and Rectifiers • Capacitors • Resistors • Inductors/EMI Filters • Transformers Application Overview Electronic switch-mode DC to DC converters convert one DC voltage level to another, by storing the input energy temporarily and then releasing that energy to the output at a different voltage. The storage may be in either magnetic field storage components (inductors, transformers) or electric field storage components (capacitors). The new 48V boardnet requires high performance 80VDC -100VDC MOSFETs with very low Rds(on) and low Qg. The power up to 3,5kW bidirectional DC/DC converter will use such MOSFETs and also high current power SMD Inductors. page 2 48V DC/DC Converter : Current Sensing, Voltage Divider Current Sensing High Side Product Name Status WSLP4026 Description Power Metal Strip®Resistors 5W and 7W version Features Low Value down to 0.0003Ω Package 4026 Q-Level AEC-Q200 Current Sensing Low Side/Phase Product Name Status Description Features Package Q-Level WSLP2512 Power Metal Strip® Resistors Very High Power (to 3 W), Low Balue (down to 0.0005Ω), SMD Low thermal EMF < 3 µV/°C Low Value down to 0.0005 Ω 2512 AEC-Q200 WSLS2512 Power Metal Strip Resistor Greater stability with maximum resistance chan or 0.5 % through 2000 h @l 2512 AEC-Q200 Voltage Divider Current and Voltage Sensing Product Name ACAS0606AT/ ACAS0612AT Status Description Current and Voltage Sensing Superior Moisture Resistivity 2 Resistors(0606) or 4 Resistors (0612) Features TCR down to ± 5 ppm/k tolerance down to ± 0.05 % Package 0606/0612 Q-Level AEC-Q200 page 3 48V DC/DC Converter : DC/DC Converter, DC/DC Buck /Boost Converter Buffer Capacitor Product Name Status 146CTI - extended Description Aluminium Capacitor SMD (Chip), High Temperature Low Impedance Features Package Extended useful life: up to 6000 h at 125 °C; Low ESR Q-Level AEC-Q200 LS Switch MOSFET Product Name Status SQJ402EP Description Automotive N-Channel 100V (D-S) 175°C MOSFET Features Low Rds(on) at 100V Low Profile Power SO8L (PPAKSO8L) Package PowerPAK SO8L Q-Level AEC-Q101 Reverse Polarity LS MOSFET Product Name Status SQJ488EP Description Automotive N-Channel 100V (D-S) 175°C MOSFET Features Low Rds(on) at 100V Low Profile Power SO8L (PPAKSO8L) Package PowerPAK SO8L Q-Level AEC-Q101 Storage Inductor Product Name Status IHLP6767GZ-5A Description Low Profile High Current IHLP Inductors Features Package High saturation current in SMD Q-Level AEC-Q200 Synch. Rectification MOSFET Product Name SQM120N10-3m8 Status Description Automotive N-Channel 100V (D-S) 175° Mosfet Features Low Rds(on) at 100V high current Package TO-263 Q-Level AEC-Q101 page 4 48V DC/DC Converter : Input Filtering, DC/DC Buck/Boost Converter LF Filter Product Name IHLP5050FD-5A Status Description Low Profile High Current IHLP Inductors Features High saturation current in SMD Package Q-Level AEC-Q200 page 5 48V DC/DC Converter : Input Filtering, Filter capacitor HF Filter Product Name VJ....31 / VJ....34 Automotive MLCC Status Description SMD MLCC Capacitor Features High ESD performance and high temperature up to 150°C Package Q-Level 0402 to 1210 AEC-Q200 page 6 48V DC/DC Converter : Output Filtering, EMI Filter DC/DC Buffer Capacitor Output Product Name 160CLA - extended Status Description Aluminium SMD Capacitor Features up to 150°C Operating Low ESR Package Q-Level AEC-Q200 page 7 48V DC/DC Converter : Protection, TVS Diode Transient Protection with Breakdown voltage >60VDC Product Name 1.5SMC Series Status Description Surface Mount TransZORB® Transient Voltage Suppressors Uni-directional, bi-directional Features 1500 W peak pulse power capability with 10/1000µs waveform, Package DO-214AB SMCJ Q-Level AEC-Q101 page 8 page 9