TIDT374 March   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Thermal Images
      1.      Top Side, 150VAC Input Voltage
      2.      Bottom Side, 150VAC Input Voltage
      3.      Top Side, 254VAC Input Voltage
    3. 2.3 Bode Plot
    4. 2.4 Electromagnetic Interference (EMI) Measurement
  7. 3Waveforms
    1. 3.1 Switching
      1. 3.1.1 150VAC Input Voltage
      2. 3.1.2 254VAC Input Voltage
    2. 3.2 Output Voltage Ripple
      1. 3.2.1 Output 1 (8V)
      2. 3.2.2 Output 2 (18V)
      3. 3.2.3 Output 3 (24V)
    3. 3.3 Input Voltage Ripple
    4. 3.4 Load Transient Output 3 (24V)
    5. 3.5 Start-Up
      1. 3.5.1 150VAC Input Voltage
      2. 3.5.2 253VAC Input Voltage
    6. 3.6 Shutdown
      1. 3.6.1 150VAC Input Voltage
      2. 3.6.2 253VAC Input Voltage

Description

This 42W multiple output power reference design supports AC/DC industrial power supplies with an AC/DC input voltage range of 150VAC to 253VAC. The design achieves a peak efficiency of 89% by using discontinuous conduction mode (DCM) valley-switching of TI’s UCC28742 flyback controller.