25/50 Watt flyback reference design for audio applications PMP21513 (ACTIVE)

Description & Features

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Key Document

Description

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

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Parametrics
 PMP21513.1
(Output Voltage 1)
PMP21513.2
(Output Voltage 2)
Vin (Min) (V)9090
Vin (Max) (V)264264
Vout (Nom) (V)243.3
Iout (Max) (A)2.2.2
Output Power (W)52.8.66
Isolated/Non-IsolatedIsolatedIsolated
Input TypeACAC
TopologyFlyback- Non SyncLinear Regulator

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LMV431A  Low-Voltage (1.24V) Adjustable Precision Shunt Regulators  Voltage references  Sample & Buy Not Available
TLV1117  Single Output LDO, 800mA, Fixed and Adj., Internal Current limit, Thermal Overload Protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC28742  High-Efficiency Flyback Controller With Optocoupler Feedback  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LMV431A Download Download
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TLV1117 Download Download
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UCC28742 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 2307 20 Nov 2018
Design files (6)
Title Type Size (KB) Date
ZIP 680 21 Nov 2018
ZIP 711 21 Nov 2018
PDF 539 21 Nov 2018
PDF 94 21 Nov 2018
PDF 62 21 Nov 2018
PDF 123 21 Nov 2018

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