This reference design is an automotive, 400-W, phase-shifted full-bridge converter which generates the 12-V output from a 48-V car battery. The enhanced phaseshifted full-bridge controller implements programmable delays which ensure zero voltage switching (ZVS) over a wide range of operating conditions. The output implements synchronous rectification, which enables fast transient response and a high loop bandwidth. The system regulates 12 V at no load with less than 100 mW of standby power. Pseudo isolation is achieved through a transformer to prevent the 48-V battery from being shorted to the secondary side. The half-bridge gate drivers can withstand a maximum boot voltage of 120-V DC.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Automotive 400W, 95% Efficiency, 36-60V to 12V Power Ref Design for Car Battery | Jun. 09, 2017 | |
| Application note | UCC28950 600W Phase Shifted Full Bridge Design Review/Application Report (Rev. D) | PDF | HTML | Mar. 04, 2022 | |
| User guide | A Design Review of a Full-Featured 350-W Offline Power Converter | Dec. 18, 2013 | ||
| Application note | Modeling, Analysis and Compensation of the Current-Mode Converter | Sep. 05, 1999 |
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