200kHz LLC Series Resonant Converter Reference Design With Low Standby Power Consumption

(ACTIVE) PMP20795

Description & Features

Technical Documents

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Key Document

Description

The PMP20795 reference design uses UCC256301 enhanced LLC controller with integrated driver to provide 24V/12A output from a nominal 380VDC input. UCC256301 provides hybrid hysteresis control (HHC) to enable a fast transient response. In this design, a 1st order system with over 6kHz bandwidth is achieved.  In addition, the advanced burst mode allows this converter to achieve less than 200mW power consumption at no load. With 200kHz nominal switching frequency, the converter is able to achieve over 96% peak efficiency.

Features
  • 380VDC input to 24V/12A output
  • Board height less than 15mm
  • Less than 200mW standby power consumption
  • Over 96% peak efficiency

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP20795.1
(Output Voltage 1)
Vin (Min) (V)300
Vin (Max) (V)400
Vout (Nom) (V)24
Iout (Max) (A)12
Output Power (W)288
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyHalf Bridge- LLC

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available
UCC256301  Wide Vin LLC Resonant Controller With High-Voltage Start Up Enabling Ultra-Low Standby Power  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC256304  Wide Vin 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
Download Download
Download -
Download Download
Download Download
Download Download
Download Download
Download -
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UCC256301 Download Download
UCC256304 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Application notes (1)
Title Abstract Type Size (KB) Date
PDF 66 05 Jul 2018
User guides (1)
Title Abstract Type Size (KB) Date
PDF 2301 21 Aug 2017
Design files (6)
Title Abstract Type Size (KB) Date
ZIP 2344 21 Aug 2017
ZIP 3739 21 Aug 2017
PDF 861 21 Aug 2017
PDF 171 21 Aug 2017
PDF 32 21 Aug 2017
PDF 175 21 Aug 2017

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