PMP21513

25/50 Watt flyback reference design for audio applications

PMP21513

Design files

Overview

The quasi-resonant flyback design is a dual output converter with a 24 Volt output and a 6 Volt output. The voltages that are supplied are important for supplying power in audio applications. The design is very low noise for sensitive audio signals with less than 2.5 % voltage ripple on the 24 V output.

Features
  • 90 VAC - 264 VAC input to 24 V/2.2 A isolated output
  • Secondary output of 6 V/200 mA put through an LDO to output 3.3 V/200 mA to reduce noise
  • Up to 88.8% Efficiency at full load without the need for a synchronous rectifier
  • Stacked windings to improve regulation of 6 V line
Output voltage options PMP21513.1 PMP21513.2
Vin (Min) (V) 90 90
Vin (Max) (V) 264 264
Vout (Nom) (V) 24 3.3
Iout (Max) (A) 2.2 .2
Output Power (W) 52.8 .66
Isolated/Non-Isolated Isolated Isolated
Input Type AC AC
Topology Flyback- Non Sync Linear Regulator
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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.

TIDT011.PDF (2377 KB)

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

TIDRXS9.PDF (95 KB)

Detailed overview of design layout for component placement

TIDRXS8.PDF (62 KB)

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

TIDRXT1.ZIP (712 KB)

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

TIDCF16.ZIP (681 KB)

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

TIDRXT0.PDF (540 KB)

PCB layer plot file used for generating PCB design layout

TIDRXS7.PDF (123 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Shunt voltage references

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

Data sheet: PDF
Linear & low-dropout (LDO) regulators

TLV1117800-mA, 15-V, linear voltage regulator

Data sheet: PDF | HTML
AC/DC & DC/DC controllers (external FET)

UCC28742High-Efficiency Flyback Controller with 1% Output regulation accuracy

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report 25/50 W Flyback Reference Design for Audio Applications Nov 20, 2018

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