SLUUCU2A March   2023  – September 2023 UCC14130-Q1 , UCC14131-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 U1 Component Selection
    2. 1.2 Pin Configuration and Functions
  5. 2Description
    1. 2.1 EVM Electrical Performance Specifications
  6. 3Schematic
  7. 4EVM Setup and Operation
    1. 4.1 Recommended Test Equipment
    2. 4.2 External Connections for Easy Evaluation
    3. 4.3 Powering the EVM
      1. 4.3.1 Power on for Start-up
      2. 4.3.2 Power off for Shutdown
    4. 4.4 EVM Test Points
    5. 4.5 Probing the EVM
  8. 5Performance Data
    1. 5.1  Efficiency Data
    2. 5.2  Regulation Data
    3. 5.3  Steady State Input Current
    4. 5.4  Start-Up Waveforms
    5. 5.5  Inrush Current
    6. 5.6  AC Ripple Voltage
    7. 5.7  EN and Timing
    8. 5.8  RLIM
    9. 5.9  Shutdown
    10. 5.10 Thermal Performance
  9. 6Assembly and Printed Circuit Board (PCB) Layers
  10. 7Bill of Materials (BOM)
  11. 8Revision History

4.3.1 Power on for Start-up

  1. Verify VIN and 5-V DC bias power supplies are OFF/disabled and no voltage is applied to the UUT
  2. Move EN shorting jumper, SH-J1, to the J2:2-3 EN ON position
  3. Turn on the VIN DC power supply. Verify 12-V is present at VIN(TP7)-to-GNDP(TP10)
  4. Verify the loads on VDD and VEE are disabled
  5. Turn on the 5-V DC bias power supply. EVM is now enabled with VDD and +5V in regulation under no load conditions.
  6. Verify 12-V is present on VDD-VEE and 5-V is present on [+5V](TP3)-GNDS(TP1)
  7. Enable the 100-mA load on VDD-(+5V), enable the 10-mA load on [+5V]-GNDS
  8. The UCC14131-Q1 is now regulating VDD and VEE and processing 1.5-W of isolated output power
  9. Vary VIN between 11.2 V<VIN<14 V, vary IVDD between 0 mA<IVDD<130 mA, vary IVEE between 0 mA<I[+5V]<30 mA.
  10. Insert oscilloscope probes into VIN(TP9), [+12V](TP6) and [+5V](TP3) for measuring VIN, [+12V] and [+5V] start-up, steady state and AC ripple voltage