SLVUCE5A April   2022  – June 2022

 

  1.   TPS25981EVM: Evaluation Module for TPS25981 eFuse
  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 Test
    2. 5.2 Overcurrent Test
    3. 5.3 Output Hot-Short Test
    4. 5.4 Wakeup into Short Test
    5. 5.5 Overvoltage Test
  8. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  9. 7Bill Of Materials (BoM)
  10. 8Revision History

2 Description

The TPS25981EVM eFuse Evaluation Board has one channel and enables evaluation of the TPS259814L eFuse. Channel 1 is standalone channel and provides programmable OVLO, ITIMER, dVdt, and ILM settings. The input power is applied at connector J9 while J14 provides the output connection. Refer to the schematic in Figure 3-1 and EVM test setup in Figure 5-1. TVS diode D2 provides input protection from transient overvoltages, while Schottky diode D12 provides output protection for the TPS25981 eFuse.

S2 allows U1 to be RESET or disabled.

Table 2-1 TPS25981EVM eFuse Evaluation Board Options and Setting
EVM FunctionChannelVin UVLO ThresholdVin OVLO

Threshold

ITimer

Output Slew Rate, dVdt

Current Limit
Low SettingHi Setting
2.7-V to 16-V, 10-A eFuse

CH1

10.84 V

Selectable OVLO – 3.77 V, 5.67 V, 13.76 V

Note: OVLO must be greater than UVLO threshold

Selectable – 170 us, 1.7 ms, 17 ms

Selectable – 1 mV/us, 0.33 mV/us, 0.15 mV/us

1.5 A

11 A