SLVUCT9 January   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Trademarks
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
      1. 1.3.1 Alternate Board Configurations
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Important Usage Notes
    3. 2.3 Connector Descriptions
  7. 3Implementation Results
    1. 3.1 Default Configuration Results
    2. 3.2 Sequence UP and DOWN Thresholds
    3. 3.3 Delay Timer
    4. 3.4 Regulation Timer
    5. 3.5 Disabled Channels
    6. 3.6 Externally Induced System RESET
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  9. 5Compliance Information
    1. 5.1 Compliance and Certifications
  10. 6Additional Information
    1. 6.1 Known Hardware Issues
  11. 7Related Documentation
  12. 8Revision History

2.2 Important Usage Notes

The TPS7H3014EVM-CVAL board is configured so that the ENx signals are tied by a 0Ω resistor to their respective SENSEx signal. This configuration is purely for simplicity of testing device features and behavior when external voltages are not available to be sensed by the SENSEx pins. If external voltages are applied to the VOUTx jumpers, the 0Ω resistors tying ENx to VOUTx must be removed.

Because the board is configured with ENx tied to VOUTx, the user should make sure VPULL_UP1 is low enough that VSENSEx does not reach the channel-disabling voltage threshold (VTURN_OFF). If the user intends to disable channels, it is recommended to do so by using R3, R4 and R5 to tie the SENSEx nodes to VLDO or another stable voltage rail.

It is important to calculate the expected maximum SENSEx voltage both before and after the SENSEx hysteresis current has been added, since the hysteresis current increases the voltage at the SENSEx node.

If VSENSEx is lower than the channel-disabling threshold before the SENSEx hysteresis current is added, but above the threshold after the hysteresis current is added, then the channel(s) experience Enable-Disable behavior. This state is not desirable or recommended and users should make sure that the channels are either fully enabled or disabled.