TIDA-00940

3W Non-ISO Bias Power Supply with up to 80% Efficiency, 15dB Margin EMI Performance Reference Design

TIDA-00940

Design files

Overview

TIDA-00940 is a 3-W, non-isolated bias power supply with up to 80% efficiency and excellent EMI performance, designed for motor control and drive subsystems in major appliances to save system costs, and other main benefits here. This reference design provides two non-isolated outputs with buck topology and is implemented using TI’s UCC28881 and TPS5405 controllers providing full protection. The hardware is designed and tested to pass EN-55014 Class B requirements for household appliances.

Features
  • Non-isolated buck topology design saves system BOM cost with limited external components for AC/DC stage
  • Excellent EMI performance with 15 dB margin meets EN-55014 Class B requirements (conducted emission)
  • Provide reliable start-up for applications of high load capacitance
  • No external cooling needed.  Up to 85°C ambient operation
  • Support 700V self-powered start-up with no an auxiliary bias winding needed
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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.

TIDUBM8A.PDF (1868 K)

Reference design overview and verified performance test data

TIDRLT7.PDF (186 K)

Detailed schematic diagram for design layout and components

TIDRLT8.PDF (95 K)

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

TIDRLT9.PDF (49 K)

Detailed overview of design layout for component placement

TIDRLU1.ZIP (454 K)

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

TIDCC71.ZIP (62 K)

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

TIDRLU0.PDF (264 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TPS54056.5V to 28V Input, 5V Fixed Output at 2A Step-Down Regulator with Intregrated MosFET

Data sheet: PDF
AC/DC & DC/DC converters (integrated FET)

UCC28881700-V Lowest Quiescent current off-line switcher

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide 3-W Non-ISO Bias Power Supply up to 80% Efficiency 15dB Design Guide (Rev. A) Aug. 10, 2016
Technical article How to build a cost-competitive and robust auxiliary power supply PDF | HTML Feb. 01, 2018

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