Multi-output Power Supply Based on LM2576HV-ADJ

  • Rajkumar Sharma
  • 1854
  • easy
  • Tested

This is a multi-output power supply based on LM2576HV-ADJ and LM317 IC. The power supply provides 3 outputs with input supply up to 55V DC. Output (O1) is adjustable up to 24V DC and load current of 2A, Output (O2) is adjustable to 1.2V-24V with load current up to 500mA and Output (O3) adjustable 1.2V-24V @ 500mA. High voltage LM2576HV-ADJ converts 55V in 24V DC. This output is adjustable but advisable to set the output to 24V DC with help of Trimmer Pot PR1.

Note: Keep PR1 at 50% before power up the project and set the Output-1  24V DC, then O2 and O3 can be set using P1 and P2.


  • Input Supply Up to 55V DC 3Amps
  • Output 1 24V DC Load Up to 2Amps
  • Output 2 1.2V-24V DC Maximum Load 500mA
  • Output 3 1.2V-24V DC Maximum Load 500mA
  • Onboard Power LED
  • PCB Dimensions 47.73mm X 42.65mm


Parts List



LM2576HV Datahseet



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