672-W, Highly Integrated Reference Design for Automotive Bidirectional 48-V/12-V Converter
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Key Document


Today's automotive power consumtion is 3KW, which will increase to 10KW in next 5 years and 12V batttary is unable to provide that much power. 48-12V bi-directional convertor provides high power requirement solution with two phases each capable of running 28A.  This solution allows bidirectional current control of both phases using a C2000 control stick and firmware OCP & OVP. The 48-12V bi-directional converter removes the voltage conditioner need and distributes loads more evenly. The 48V battary is used to power high torque motors and other high power components such as A/C compressors and EPS, while no change to 12V battery loads.

  • Nominal 48V- 12V bidirectional power supply
  • Dual Phase, each capable of running 28A load 
  • Can drive a total of 56A load
  • 2 SM72295 for each phase
  • One C2000 control stick card
  • GUI monitoring and control power transfer; firmware OCP & OVP

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
SM72295  3-A, 100-V full bridge gate driver with Integrated current sense amplifier  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules
TMP103  ±2°C Digital temperature sensor with I2C/SMBus capable of 1.4V in WCSP  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
TMS320F28069  C2000™ 32-bit MCU with 90 MHz, FPU, VCU, 256 KB Flash, CLA  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
SM72295 Download Download
TMP103 Download -
TMS320F28069 Download -
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User guides (1)
Title Type Size (KB) Date
PDF 1308 21 Sep 2015
Design files (7)
Title Type Size (KB) Date
ZIP 492 21 Sep 2015
ZIP 8248 21 Sep 2015
PDF 1483 21 Sep 2015
PDF 170 21 Sep 2015
PDF 152 21 Sep 2015
PDF 197 21 Sep 2015
PDF 318 21 Sep 2015

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