100V-450VDC, 5W, 80% Efficiency at 1W, Auxiliary Supply Reference Design for AC-DC Power Supplies
TIDA-00708
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- 100-VDC to 450-VDC 5-W High-Efficiency Auxiliary Supply Design Guide (Rev. B)
(PDF 3414 KB)
16 Aug 2016
Description
The TIDA-00708 is a 5-W multiple-output auxiliary power supply designed for use in power converters targeted for applications in industrial, server, telecom, and consumer systems. This reference design is a flyback converter implemented using the device UCC28881 that integrates the controller, 700-V power MOSFET, and internal current sense into one monolithic device. The design is simple, compact, and low cost due to minimal component count with all the necessary protections, such as output overcurrent, output short circuit, and over-temperature conditions, built in. Hardware is designed and tested to pass EFT requirements and meets low-power efficiency performance of Department of Energy (DoE) Level VI.
Features
- Designed for wide operating input voltage range from 100 VDC to 450 VDC
- Very low standby power of <50 mW
- High efficiency >82% at 165 VDC and >84% at 400 VDC for loads greater than 75%
- Multiple outputs: 12 V/0.2 A, 3.3 V/0.25 A, 12 V/0.15 A (isolated)
- Ultra-simple circuit with low-cost off the shelf components with a compact form factor (32 mm x 25 mm)
See the Important Notice and Disclaimer covering reference designs and other TI resources.
