SLVUCH6A July   2023  – November 2023 TPS25984

 

  1.   1
  2.   TPS25984EVM: Evaluation Module for TPS25984 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
      1. 4.2.1 Power Supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 Loads
  8. 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 Quick Output Discharge (QOD)
    11. 5.11 Thermal Performance of TPS25984EVM
  9. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  10. 7Bill of Materials (BOM)
  11. 8Revision History

2 Description

The TPS25984EVM enables the evaluation of TPS259840x and TPS259841x eFuses from TPS25984 family. This EVM has two (2) TPS259840x eFuses connected in parallel. The input power is applied across the connectors T1 and T3, while T2 and T3 provide the output connection for the EVM; refer to the schematic in 2 and EVM test setup in 3. TVS diodes D1 and D2 provide the input protection from transient overvoltages. Schottky diodes D3 and D4 protect the output by clamping the negative voltage excursion at the OUT pins of TPS25984 eFuses within the minimum absolute rating.

SW1 allows to do power cycle and SW2 enables the quick output discharge (QOD). Power Good (PG) and fault (FLTb and FLTb2) indicators are provided by LED DG1, DR1, and DR2 respectively.

Table 2-1 TPS25984EVM eFuse Evaluation Board Options and Setting
EVM FunctionVIN UVLO ThresholdVIN OVLO ThresholdITIMEROutput Slew Rate (dv/dt)IMONILIMILIM2IREF
Performance evaluation of TPS25984, 4.5-V to 16-V, 55-A (RMS) eFuse5 V16.7 VSelectable - 1.4 ms and 14 msSelectable - 1.2 V/ms, 1.8 V/ms, and 12 V/msSelectable - 120 A and 70 A with VREF of 1 VSelectable - 38 A and 22 A of inrush current limit and 59 A and 35 A of active current sharing threshold with VREF of 1 VSelectable - 1 V and 0.8 V