SLVUDB5A June   2025  – November 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 General Configurations
      1. 2.1.1 Physical Access
      2. 2.1.2 Test Equipment and Setup
  8. 3Implementation Results
    1. 3.1 Test Setup and Procedures
      1. 3.1.1 Supply Ramped From 0V to 54V — Start-up
      2. 3.1.2 Power Up Into Short
      3. 3.1.3 Undervoltage Lockout
      4. 3.1.4 Overvoltage Lockout
      5. 3.1.5 Overcurrent Event
      6. 3.1.6 Output Hot Short
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Drawings
    3. 4.3 Bill of Materials (BOM)
  10. 5Additional Information
    1. 5.1 Trademarks
  11. 6Revision History

2.1.1 Physical Access

The TPS1686-87EVM eFuse Evaluation Board input and output connectors functions are listed in 5. The availability of test points and the functions of the jumpers are described in 6 and 7. The function of the signal LED indicators is detailed in Table 2-4.

Table 2-1 Input and Output Connector Functionality
ConnectorLabelDescription
J13VIN2 (+)Positive terminal for the input power to the TPS1686
J14VOUT2 (+)Positive terminal for the output power from the TPS1686
J11, J12PGND (–)Negative terminal for the EVM (Common for both input and output)
Table 2-2 Test Points Description
Test PointsLabelDescription
TP37VIN2TPS1686 input voltage
TP38VOUT2

TPS1686 output voltage

TP30EN2Active-high enable input for TPS1686
TP31SWEN2Open-drain signal to indicate and control TPS1686 ON and OFF status
TP3OVPVoltage at the OVP pin of the TPS1686
TP6TIMEROvercurrent blanking timer of TPS1686
TP26VDD2TPS1686 controller input power
TP32TEMP2

TPS1686 die temperature monitor analog voltage output

TP33DVDT2

Start-up output slew rate control

TP34IREF2Reference voltage for overcurrent and amp, short-circuit protections, and active current-sharing blocks
TP12ILIM2TPS1686 current monitor
TP36IMON2An external resistor from this pin to GND sets the overcurrent protection threshold and fast-trip threshold during steady-state. This pin also acts as a fast and accurate analog output load current monitor signal during steady-state.
TP15SFT_SELScalable fast trip threshold multiplier during steady state
TP17FLTb2Open-drain active low fault indication: secondary device
TP35PG2TPS1686 open-drain active high power good indication
TP25VDD Pullup

5V pullup power supply generated using a LDO from VIN

QGND1, QGND2, QGND3, and QGND4QGNDDevice ground
G1, G2, G3, and G4QGNDDevice ground
Table 2-3 Jumper Descriptions and Default Positions
Jumper Label Description

Default Jumper Position
J4 DVDT2 1-2 position sets the output slew rate to 1V/ms

3-4
3-4 position sets the output slew rate to 0.5V/ms
5-6 position sets the output slew rate to 0.1V/ms
J3 TIMER 1-2 position sets the overcurrent blanking timer to 3ms 3-4
3-4 position sets the overcurrent blanking timer to 17ms
J2 IREF2 1-2 position sets the reference voltage for over-current, short-circuit protection, and active current sharing blocks to 0.8V 3-4
3-4 position sets the reference voltage for over-current, short-circuit protection, and active current sharing blocks to 1V
J5 SFT_SEL 1-2 position sets the scalable fast-trip threshold at 2.5 times over-current threshold 1-2
3-4 position sets the scalable fast-trip threshold at 2 times over-current threshold
Table 2-4 LED Descriptions
LEDDescription
DG2When ON, indicates that PG2 is asserted
DR2When ON, indicates that FLTb2 is asserted