Texas Instruments UCC28700 | Demoboard TIDA-00706

Description

This design is a 25-W, multiple output, auxiliary power supply designed for use in power converters targeted for server, telecom, and industrial system applications. This solution is a multiple output flyback converter implemented using the UCC28700 to provide constantvoltage (CV) and constant-current (CC) output regulation and uses quasi-resonant valley-switching to achieve higher efficiency. The design is compact and affordable due to minimal component count with all the necessary built-in protections such as output overcurrent and output short circuit. Hardware is designed and tested to pass EFT requirements and aids to meet low power efficiency performance of the Department of Energy (DoE) Level VI standards. Additionally, the design has a built-in eFuse for fault isolation on the 12-V main rail without affecting any other output.

Features

• High average efficiency of 83.8% at 400VDC and 87.2% at 165VDC to meet DoE Level VI and EU CoC Tier-2 energy efficiency norms
• Peak efficiency of ~86% at 400VDC and ~88% at 165VDC at full load
• Low stand-by power (<100mW) to help meet no- load condition limits of multiple energy norms (DoE level VI and EU CoC Tier-2)
• Wide input voltage range from 120VDC to 400VDC to power universal input AC-DC converters
• Multiple outputs: -7.2/5/12V and isolated 6/7.2/11/12V to address all system rails in one unit REMARK:SchematiC,BOM with pdf IS ADDED

Typical applications

• UPS and Industrial Power Supplies,Battery Chargers
• Server, Telecom and Industrial system,Auxiliary Unit for AC-DC Power Converters
• Telecom Rectifiers

More information

• Datasheet