SLVUD98 May   2025 TPS7H4012-SEP

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Setup
      1. 2.1.1 Transient Load Circuit
    2. 2.2 Connector Descriptions
    3. 2.3 Best Practices
  7. 3Implementation Results
    1. 3.1 Default Configuration Results
    2. 3.2 Soft Startup
    3. 3.3 Voltage Ripple on VOUT
    4. 3.4 Load Step
    5. 3.5 Frequency Response
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Related Documentation

2.1.1 Transient Load Circuit

The TPS7H4012EVM provides a transient load circuit using CSD16408Q5 N-Channel Power MOSFET, along with a 600mΩ load resistance created by 2, 1.2Ω chip resistors connected in parallel. While the CSD16408Q5 power MOSFET is capable of conducting the full 6A output current of the TPS7H4012, the chip resistors are each rated for only 1W. When utilizing the transient circuit on the TPS7H4012EVM, the signal sent to the MOSFET gate through TP24 (TRANS) can be modulated to keep the average power through the load resistors below the 1W rating.

For additional information on operation of the power MOSFET, please see the CSD16408Q5 data sheet.