TIDUDC0A march   2017  – may 2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  7. 3Waveforms
    1. 3.1 Start-Up Sequence
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Switching
    5. 3.5 Conducted EMI

Description

This reference design is an isolated DCM flyback design that takes a universal line input 85-VAC to 265-VAC, and produces a 12-V output capable of 12-W loading. The design uses the UCC28730 controller that achieves ultra-low standby power at no load and achieves 82% efficiency at high and low line, and measures 1 in × 3 in on a 2-layer board.