500-W, single stage LLC power supply reference design for audio amplifier PMP40379 (ACTIVE)

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Key Document

Description

This single-stage LLC converter reference design illustrates how to convert AC input voltage (100-120 Vac and 200-240 Vac) to isolated ±42-V DC output with the UCC256302 resonant controller. The design has a regulated ±42-V output that can handle up to 6 A of continuous output current and 12 A of peak current for 100 ms.

Features
  • 100–120-Vac or 200–240-Vac input range operation without front-end PFC
  • Provides ±42-V at 6-A continuous/12-A peak output current for audio amplifier
  • More than 95% peak efficiency and less than 500-mW standby power consumption at 230-Vac

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Parametrics
 PMP40379.1
(Output Voltage 1)
PMP40379.2
(Output Voltage 2)
PMP40379.3
(Output Voltage 3)
PMP40379.4
(Output Voltage 4)
Vin (Min) (V)100100200200
Vin (Max) (V)120120240240
Vout (Nom) (V)42-4242-42
Iout (Max) (A)6666
Output Power (W)252252252252
Isolated/Non-IsolatedIsolatedIsolatedIsolatedIsolated
Input TypeACACACAC
TopologyHalf Bridge- LLCHalf Bridge- LLCHalf Bridge- LLCHalf Bridge- LLC

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available
UCC256302  LLC resonant controller with high voltage start up enabling low standby power  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)
TL431 Download Download
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Download -
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UCC256302 Download Download

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Technical Documents

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Application notes (1)
Title Type Size (KB) Date
PDF 226 28 Jun 2019
User guides (1)
Title Type Size (KB) Date
PDF 1038 09 Nov 2018
Design files (6)
Title Type Size (KB) Date
ZIP 1226 09 Nov 2018
ZIP 2168 09 Nov 2018
PDF 1395 09 Nov 2018
PDF 233 09 Nov 2018
PDF 105 09 Nov 2018
PDF 200 09 Nov 2018

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