SLVUC73B January   2022  – February 2024 TPS7H4003-SEP

 

  1.   1
  2.   TPS7H4003EVM Evaluation Module (EVM)
  3.   Trademarks
  4. 1TPS7H4003EVM Overview
    1. 1.1 Features
    2. 1.2 Applications
  5. 2TPS7H4003EVM Default Configuration
  6. 3TPS7H4003EVM Initial Setup
  7. 4TPS7H4003EVM Testing
    1. 4.1 Output Voltage Regulation
    2. 4.2 Output Voltage Ripple
    3. 4.3 Soft Startup
    4. 4.4 Transient Response to Positive and Negative Load Step (9A to 18A to 9A)
    5. 4.5 Loop Frequency Response
    6. 4.6 Setup
  8. 5TPS7H4003EVM Schematic
  9. 6TPS7H4003EVM Bill of Materials (BOM)
  10. 7Board Layout
  11. 8Support Resources
  12. 9Revision History

4.4 Transient Response to Positive and Negative Load Step (9A to 18A to 9A)

  1. Configure e-load to switch between 9A and 18A at a rate of 1A/µs.
  2. On oscilloscope, display CH2 (VOUT) [AC coupled, 20mV/div] and CH4 (Output Current Probe) [5A/div, trigger rising edge ≈12A] with 40µs/div.

    Figure 4-4 shows the response to this load step to be less than 35mV or –3.5%.

    GUID-20220114-SS0I-W3BZ-DNX0-9XS12MTZM6QM-low.png Figure 4-4 Transient Response to Load Step 9A to 18A at 1A/µs
  3. Change the trigger on CH4 to falling edge to capture the transient response of VOUT to negative current step from 18A to 9A as shown in Figure 4-5.
    GUID-20220114-SS0I-CMQX-PNJG-GTQB5M5BKFNX-low.png Figure 4-5 Transient Response to Load Step 18A to 9A at 1A/µs