PMP7188 Reference Design

Texas Instruments

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

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 @130KHz86.6% efficiency achieved @ 230Vac input: 12V@2A output76.6% efficiency at 10% load130mA No load power disappationExcellent Output voltage regulation achieved
Applications
  • HVAC controller
  • HVAC fluid leak detector
Product Categories
  • Power management

Parts

Part Number Name Companion Part
LM5021 LM5021 Buy Datasheet
TL431A TL431A Buy Datasheet

Bill Of Materials

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Schematic

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Design File

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP7188 Gerber 10 Mar 2015 ZIP 61
PMP7188 BOM 10 Mar 2015 PDF 19
PMP7188 Schematic 10 Mar 2015 PDF 55