High-line 185V to 265V AC input; 12 V @ 2A output Isolated Flyback AC to DC Converter
PMP7188
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Description & Features

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Description

This power reference design uses the LM5021 AC-DC Current Mode PWM controller. The switching frequency is programmed at 130KHz in an isolated flyback topology with minimal external components and small form factor size. The design is optimized for high-line input and 12V / 2A output. High Efficiency is achieved over load range thanks to the skip cycle mode and ultra low start-up current of the LM5021 controller.

Features
  • Fixed Swicthing frequency @130KHz
  • 86.6% efficiency achieved @ 230Vac input, 12V@2A output
  • 76.6% efficiency at 10% load
  • 130mA No load power disappation
  • Excellent Output voltage regulation achieved

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Schematic/Block Diagram

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Test Data

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Design Files

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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
LM5021  30V, 1MHZ 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 documentation

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User guides (1)
Title Type Size (KB) Date
PDF 284 10 Mar 2015
Design files (3)
Title Type Size (KB) Date
ZIP 61 10 Mar 2015
PDF 19 10 Mar 2015
PDF 55 10 Mar 2015

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