TIDT266 April   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Dimensions
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Regulation Graph
    4. 2.4 Thermal Images
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Output Voltage Start-Up Waveform

Description

This reference design provides an isolated +14-V, 56-W output with a quasi-resonant flyback topology. The power supply can be powered from the 350-V to 1000-V DC input. This design uses the cascode MOSFETs and the flyback UCC28740-Q1 controller. The line and load regulation is regulated to within ±1% precision. The peak efficiency is 84.6% at 1000-V input and 56-W output.