TIDA-01344

Automotive 10-V/80-V Ultra-Wide Vin, 12-V Vout Flyback Reference Design for 48-V Car Battery

TIDA-01344

Design files

Overview

The TIDA-01344 reference design is a 24W, automotive 48V battery front-end power supply that generates 12V from a wide input range of 10V to 80V DC, up to 100V transient for LV148 standard compliance. The system consists of EMI filters for CISPR 25 compliance and circuit protection for clamping high voltage transients to safe levels for downstream circuitry. The flyback controller implements primary side regulation with no optocoupler, allowing for extended life time and smaller board design, and the flyback transformer is designed and qualified as automotive AEC-Q200 Grade 1.

Features
  • Wide Vin flyback converter over the input voltage of 10V to 80V DC, 100V transient, output voltage 12V and current up to 2A
  • Protection for clamping high voltage transients to safe levels for downstream circuitry
  • Automotive AEC-Q200 Grade 1-qualified transformer design
  • Primary side regulation with no optocoupler for extended lifetime and compact board design
  • Tested for CISPR25-conducted EMI (Class 5)
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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.

TIDUCO4.PDF (6922 K)

Reference design overview and verified performance test data

TIDRQ19.PDF (432 K)

Detailed schematic diagram for design layout and components

TIDRQ20.PDF (74 K)

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

TIDRQ21.PDF (241 K)

Detailed overview of design layout for component placement

TIDRQ23.ZIP (883 K)

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

TIDCD81.ZIP (447 K)

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

TIDRQ22.PDF (1275 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Boost controllers (external switch)

LM5022-Q16-60V Wide Vin, current mode boost, SEPIC and Flyback controller, AEC-Q100 qualified

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Automotive 10-80V Ultrawide-VIN, 12V VOUT Flyback Ref Design for 48V Car Battery Nov. 28, 2016
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) Apr. 24, 2013
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) Apr. 23, 2013

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