PMP40487

AC Input, 5-V/1-A and 5-V/1-A dual-output flyback reference design

PMP40487

Design files

Overview

This design is auxiliary power supply with 5-V/1-A and 5-V/1-A dual output. The line and load regulation of the power supply is designed to be within 1% using the secondary side regulator, UCC28742. The system's reliability is improved through input UVLO and output OVP, OCP, SCP. The four point's load (25%, 50%,75%, 100%) average efficiency is above 81%. 

Features
  • DCM valley-switching operation enable high efficiency at light load and better EMI performance
  • Up to 1% line and load regulation enable  output voltage high accuracy requirement
  • Average efficiency above 81% simplifies the thermal design
Output voltage options PMP40487.1 PMP40487.2
Vin (Min) (V) 85 85
Vin (Max) (V) 265 265
Vout (Nom) (V) 5 5
Iout (Max) (A) 1 1
Output Power (W) 5 5
Isolated/Non-Isolated Isolated Isolated
Input Type AC AC
Topology Flyback- DCM Flyback- DCM
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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.

TIDT073.PDF (1075 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRYM5.PDF (144 K)

Detailed schematic diagram for design layout and components

TIDRYM6.PDF (28 K)

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

TIDRYM7.PDF (83 K)

Detailed overview of design layout for component placement

TIDRYM9.ZIP (26 K)

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

TIDCF78.ZIP (432 K)

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

TIDRYM8.PDF (674 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28742High-Efficiency Flyback Controller with 1% Output regulation accuracy

Data sheet: PDF | HTML
Shunt voltage references

ATL4312.5-V low-IQ adjustable precision shunt regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report AC Input, 5-V/1-A and 5-V/1-A dual-output flyback reference design Jan. 14, 2019

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