TIDT250A March   2021  – May 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 Considerations
    4. 1.4 Dimensions
    5. 1.5 Test Setup
  5. 2Testing and Results
    1. 2.1 Load Regulation Graphs
    2. 2.2 Efficiency Graphs
    3. 2.3 Efficiency Data
    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 Start-up Sequence

Description

This reference design uses a single UCC25800-Q1 to drive two LLC transformers. Each isolated output feeds into a TPS7A39 dual-channel positive and negative output LDO. PMP23124 can be used to bias two wide band gap FETs that require a positive and negative voltage to drive. Each output can be loaded to 2.8 W.