PMP30251

50.6W Valley Switching Flyback with Universal AC Input Reference Design

PMP30251

Design files

Overview

The PMP30251 reference design uses the UCC28740 flyback controller  to generate an isolated output 23V@2.2A from an universal AC input. The UCC28740 uses an optical coupler to regulate the output and to improve transient response. The valley-switching technique reduces switching losses and keeps the efficiency high.

Features
  • Isolated output
  • Valley switching
  • Good transient response
  • Integrated 700V startup switch
  • Test report available
Output voltage options PMP30251.1
Vin (Min) (V) 85
Vin (Max) (V) 264
Vout (Nom) (V) 23
Iout (Max) (A) 2.2
Output Power (W) 50.6
Isolated/Non-Isolated Isolated
Input Type AC
Topology 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.

TIDUDM2.PDF (905 K)

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

TIDRSV7.PDF (148 K)

Detailed schematic diagram for design layout and components

TIDRSV8.PDF (192 K)

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

TIDRSV9.PDF (143 K)

Detailed overview of design layout for component placement

TIDRSW1.ZIP (1033 K)

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

TIDCDV7.ZIP (75 K)

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

TIDRSW0.PDF (169 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28740Constant-Voltage, Constant-Current (CVCC) Flyback controller with Secondary Side Regulation (SSR)

Data sheet: PDF | HTML
Shunt voltage references

LMV431A1%, low-voltage (1.24-V) adjustable precision shunt regulator

Data sheet: PDF

Technical documentation

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Type Title Date
* Test report PMP30251 Test Results Sep. 25, 2017

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