LM5181 PSR flyback converter design tool




Welcome to the LM5181 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC flyback regulator based on the LM5181 PSR flyback converter. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.
  • Select transformer parameters including turns ratio and mag inductance
  • Determine input and output capacitances for specified ripple requirements (1% Vout and 5% Vin)
  • Select components for feedback, soft-start, input UVLO, and temperature compensation
  • Advise components (usually optional) for primary winding voltage clamp and flyback diode snubber
  • Optimize the design using efficiency and solution size as key performance metrics
  • Inspect converter efficiency and switching frequency over load and line
  • Analyze efficiency based on selected component parameters
  • Review auto-generated schematic and BOM list


Support software

LM5181 PSR Flyback Converter Quickstart Design Tool (Rev. A) SNVC241A.ZIP (3096KB)

Release date: 13-Aug-2021
Supported products & hardware

Supported products & hardware

Isolated DC/DC converters & modules
LM5181 65-VIN no-opto flyback converter with 100-V, 0.75-A integrated MOSFET LM5181-Q1 Automotive 65-VIN no-opto flyback DC/DC converter with 100-V, 0.75-A integrated MOSFET

Support & training

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