PMP10195 Reference Design

Texas Instruments

Three-Phase AC and DC Input to 24V at 125mA Quick-Startup Isolated Flyback Reference Design

Description

This design supplies an isolated 24V at 125mA from three-phase AC mains and DC input voltage. Since a maximum 70-ms startup time is necessary and the maximum input voltage is 1260 Vdc: a low-loss startup network has been developed. In order to reduce the stress on the FET: a cascode configuration has been selected. The controller features constant switching frequency and low quiescent current. A small form factor makes it suitable for electronic breaker supply.

Features
  • LM5020-based isolated flyback in constant switching frequency delivering 24V at 125mA80% peak efficiency at full load and 325Vdc input voltageExtremely wide input voltage range: 56Vac to 891VacLess than 70-ms startup timeMagnetic feedback: no optocoupler is needed
Applications
  • Circuit breaker (ACB
  • MCCB
  • VCB)
Product Categories
  • Power management

End Equipment Reference Diagrams

Parts

Part Number Name Companion Part
LM5020 LM5020 Buy Datasheet

Bill Of Materials

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Schematic

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP10195 Gerber 20 Apr 2016 ZIP 42
PMP10195 CAD Files 20 Apr 2016 ZIP 455
PMP10195 PCB 20 Apr 2016 PDF 1101
PMP10195 Assembly Drawing 20 Apr 2016 PDF 42
PMP10195 BOM 20 Apr 2016 PDF 118
PMP10195 Schematic 20 Apr 2016 PDF 418