SLVUCH7A september   2022  – june 2023 TPS25990

 

  1.   1
  2.   TPS25990EVM: Evaluation Module for TPS25990 eFuse
  3.   Trademarks
  4. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  5. 2Description
  6. 3Schematic
  7. 4General Configurations
    1. 4.1 Physical Access
    2. 4.2 Test Equipment and Setup
      1. 4.2.1 Power supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 USB-to-GPIO Interface Adapter
      5. 4.2.5 Loads
  8. 5Test Setup and Procedures
    1. 5.1  Hot Plug
    2. 5.2  Start-up with Enable
    3. 5.3  Current Limit Based Start-up Behavior
    4. 5.4  Power Up into Short
    5. 5.5  Overvoltage Lockout
    6. 5.6  Transient Overload Performance
    7. 5.7  Overcurrent Event
    8. 5.8  Provision to Apply Load Transient and Overcurrent Event Using an Onboard Switching Circuit
    9. 5.9  Output Hot Short
    10. 5.10 Quick Output Discharge (QOD)
    11. 5.11 Thermal Performance of TPS25990EVM
  9. 6Using the TPS25990EVM-GUI
    1. 6.1 Access the TPS25990EVM-GUI
    2. 6.2 Introduction to the TPS25990EVM-GUI
    3. 6.3 Establishing Communication Between the EVM and GUI
    4. 6.4 Quick Info
    5. 6.5 Configuration
    6. 6.6 Telemetry
    7. 6.7 Blackbox
    8. 6.8 Register Map Page
  10. 7EVAL Board Assembly Drawings and Layout Guidelines
    1. 7.1 PCB Drawings
  11. 8Bill Of Materials (BOM)
  12. 9Revision History

1.1 EVM Features

TPS25990EVM comes with one TPS25990 eFuse and one TPS25985 eFuse connected in parallel to evaluate a 12-V (typical) and 110-A (steady-state) design. General TPS25990EVM eFuse evaluation board features include:

  • 5-V to 16-V (typical) operation
  • 9-A to 130-A programmable circuit breaker threshold using on-board jumpers
  • Adjustable reference voltage (VIREF) for overcurrent, short-circuit protection, and active current sharing blocks through VIREF (E0h) register
  • Adjustable output voltage slew rate control both in hardware and firmware
  • Adjustable transient current blanking timer in firmware through OC_TIMER (E6h) register
  • Adjustable current limit during start-up and active current sharing threshold using on-board jumpers
  • TVS diode for input and Schottky diode for output transient protections
  • LED status for power good and fault indications
  • On-board test points to use the general purpose comparator in implementing the PROCHOT functionality
  • Options to engage the power cycle and the quick output discharge (QOD) using EN/UVLO pin
  • Option to apply custom load transients using on-board MOSFETs, gate drive circuit, and load resistors
  • PMBus interface with the TPS25990EVM-GUI using the USB-TO-GPIO2 USB interface adapter evaluation module
  • Option to interface an external EEPROM with TPS25990 for indefinite configuration of the eFuse and Blackbox fault recording
CAUTION: Do not leave the EVM powered when unattended
WARNING: Signal traces, components, and component leads are located on the bottom of the circuit module. There can be exposed voltages, hot surfaces, or sharp edges as a result. When operating the board, do not reach under.
CAUTION: The communication interface is not isolated on the EVM. Make sure there is no ground potential between the computer and the EVM. Note that the computer is referenced to the ground potential of the EVM.