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


Design files


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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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUAO2.PDF (1308 K)

Reference design overview and verified performance test data

TIDRH39.PDF (318 K)

Detailed schematic diagram for design layout and components

TIDRH40.PDF (197 K)

Detailed schematic diagram for design layout and components

TIDRH41.PDF (152 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRH42.PDF (170 K)

Detailed overview of design layout for component placement

TIDRH44.ZIP (8248 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRH43.PDF (1483 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Half-bridge drivers

SM722953-A, 100-V full bridge gate driver with Integrated current sense amplifier

Data sheet: PDF
C2000 real-time microcontrollers

TMS320F28069C2000™ 32-bit MCU with 90 MHz, FPU, VCU, 256 KB flash, CLA

Data sheet: PDF | HTML
C2000 real-time microcontrollers

TMS320F28069-Q1Automotive C2000™ 32-bit MCU with 90 MHz, FPU, VCU, 256 KB flash, CLA

Data sheet: PDF | HTML
Digital temperature sensors

TMP103±2°C Digital temperature sensor with I2C/SMBus capable of 1.4V in WCSP

Data sheet: PDF | HTML

Technical documentation

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* Design guide TIDA-00558 Test Results Sep. 21, 2015

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