Isolated IGBT gate-drive power supply reference design with integrated switch PSR flyback controller
TIDA-010006
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Key Document

Description

This reference design provides isolated positive and negative voltage rails for Insulated  Gate Bipolar Transistor (IGBT) gate drivers from a 24-V DC input supply. It uses a flyback power supply topology to generate four pairs of 15-V and –5-V outputs suitable for powering six IGBT gate drivers of 1 W each. The integration of a 100-V rated primary-side switch within the LM5180 flyback converter together with the elimination of an auxiliary transformer winding enables a compact solution.

Features
  • Quasi-resonant boundary conduction mode along with frequency modulation provides peak efficiency of 90% at balanced full load
  • Supplies output power up to 1.2 W per IGBT driver
  • Provides compact and cost-effective solution due to elimination of opto-coupler and transformer auxiliary winding
  • Provision to turn the power supply on and off through the EN pin
  • Programmable soft start limits the inrush current drawn by the power supply

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM25180  42-Vin PSR flyback converter with 65-V, 1.5-A integrated power MOSFET  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LM5180  65-VIN PSR flyback converter with 100-V, 1.5-A integrated power MOSFET  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)
LM25180 Download
LM5180 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 8392 27 Sep 2018
Design files (6)
Title Type Size (KB) Date
PDF 686 11 Apr 2019
PDF 96 11 Apr 2019
PDF 251 11 Apr 2019
PDF 227 11 Apr 2019
ZIP 2528 11 Apr 2019
ZIP 441 11 Apr 2019

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