SLVUCB8A May   2022  – September 2022 TPS25985

 

  1.   TPS25985 evaluation module for eFuse User's Guide
  2.   Trademarks
  3. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  4. 2Description
  5. 3Schematic
  6. 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 Loads
  7. 5Test Setup and Procedures
    1. 5.1  Hot Plug
    2. 5.2  Start-up with Enable
    3. 5.3  Difference Between Current Limit and DVDT Based Start-up Mechanisms
    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 PROCHOT# Implementation Using General-Purpose Comparator
    11. 5.11 Quick Output Discharge (QOD)
    12. 5.12 Thermal Performance of TPS25985EVM
  8. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  9. 7Bill Of Materials (BOM)
  10. 8Revision History

1.1 EVM Features

TPS25985EVM comes with two (2) TPS25985 eFuses connected in parallel to evaluate a 12-V (typical) and 120-A (steady state) design. General TPS25985EVM eFuse evaluation board features include:

  • 5-V to 16-V (typical) operation
  • 28-A to 170-A programmable circuit breaker threshold using onboard jumpers

  • Adjustable reference voltage for overcurrent protection and active current sharing blocks

  • Adjustable output voltage slew rate control
  • Adjustable transient current blanking timer

  • Adjustable current limit during start-up and active current sharing threshold using onboard jumpers

  • TVS diode for input and Schottky diode for output transient protections
  • LED status for power good and fault indications

  • Onboard test points and associated circuitry to implement the system level functionalities such as adjustable overvoltage protection, PROCHOT#™, load handshake, power good with adjustable thresholds, etc using the general-purpose comparator built into the TPS25985 eFuse

  • Options to engage the enable power cycle and the quick output discharge (QOD)

  • Option to apply custom load transients using onboard MOSFETs, gate drive circuit, and load resistors