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

2 Description

The TPS25985EVM enables the evaluation of TPS259850x and TPS259851x eFuses from TPS25985 family. This EVM has two (2) TPS259850x 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 Figure 3-1 and EVM test setup in Figure 5-1. 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 TPS25985 eFuses within the maximum absolute rating.

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

Table 2-1 TPS25985EVM eFuse Evaluation Board Options and Setting
EVM Function Vin UVLO Threshold Vin OVLO Threshold

ITIMER

Output Slew Rate (dv/dt)

IMON

ILIM

ILIM2

IREF
Performance evaluation of TPS25985, 4.5-V to 16-V, 60-A eFuse

5 V

 16.7 V

Selectable - 1.4-ms and 14-ms

Selectable - 1.2-V/ms, 1.8-V/ms, and 12-V/ms

 Selectable - 170-A, 100-A, and 70-A with VREF of 1-V Selectable - 32-A and 22-A of inrush current limit and 50-A and 35-A of active current sharing threshold with VREF of 1-V Selectable - 32-A and 22-A of inrush current limit and 50-A and 35-A of active current sharing threshold with VREF of 1-V Selectable - 1-V and 0.8-V