75/150-W Flyback reference design for audio applications PMP21549 (ACTIVE)

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Key Document

Description

This flyback reference design uses the cost effective LM5021 AC-DC Current-Mode PWM Controller. Universal line input is converted to a 28-V output. The supply is designed for sustained operation at 75-W and is rated for peaks up to 150-W. This range is ideal for the power requirements of audio signals. It is also tested for conductive EMI compliance.

Features
  • 90-VAC - 265-VAC input to 28-V/5.5-A isolated output
  • Up to 89% efficiency at full load without the need for a synchronous rectifier
  • Data provided for conducted emissions tests

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Parametrics
 PMP21549.1
(Output Voltage 1)
Vin (Min) (V)90
Vin (Max) (V)265
Vout (Nom) (V)28
Iout (Max) (A)5.5
Output Power (W)154
Isolated/Non-IsolatedIsolated
Input TypeAC
TopologyFlyback- Non Sync

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5021  AC-DC current mode PWM controller  Offline & isolated DC/DC controllers & converters  Sample & Buy Not Available
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5021 Download Download
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TL431 Download Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 2850 25 Jan 2019
Design files (3)
Title Type Size (KB) Date
PDF 127 25 Jan 2019
PDF 61 25 Jan 2019
PDF 253 25 Jan 2019

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