SLVUD44A March   2025  – October 2025 TPS1689

 

  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
        1. 2.1.2.1 Power supplies
        2. 2.1.2.2 Meters
        3. 2.1.2.3 Oscilloscope
        4. 2.1.2.4 USB-to-GPIO Interface Adapter
        5. 2.1.2.5 Loads
  8. 3Implementation Results
    1. 3.1 Test Setup and Procedures
      1. 3.1.1 Hot Plug
      2. 3.1.2 Start-up With Enable
      3. 3.1.3 Power Up Into Short
      4. 3.1.4 Undervoltage Lockout
      5. 3.1.5 Overvoltage Lockout
      6. 3.1.6 Overcurrent Event
      7. 3.1.7 Output Hot Short
      8. 3.1.8 Thermal Performance of TPS1685EVM
  9. 4Using the TPS1689EVM-GUI
    1. 4.1 Access the TPS1689EVM-GUI
    2. 4.2 Introduction to the TPS1689EVM-GUI
    3. 4.3 Establishing Communication Between the EVM and GUI
    4. 4.4 Quick Info
    5. 4.5 Configuration
    6. 4.6 Telemetry
    7. 4.7 Register Map Page
  10. 5Hardware Design Files
    1. 5.1 Schematic
    2. 5.2 PCB Drawings
    3. 5.3 Bill OfmAterials (BOM)
  11.   Trademarks
  12. 6Revision History

2.1.1 Physical Access

5 lists the TPS1689EVM eFuse Evaluation Board input and output connectors functionality. 6 and 7 describe the availability of test points and the functionality of the jumpers. Table 2-4 summarizes the way to configure the device address. Table 2-5 presents the function of the signal LED.

Table 2-1 Input and Output Connector Functionality
ConnectorLabelDescription
T1VIN (+)Positive terminal for the input power to the EVM
T2VOUT (+)Positive terminal for the output power from the EVM
T3PGND (–)Negative terminal for the EVM (common for both input and output)
Table 2-2 Test Points Description
Test PointsLabelDescription
TP1ENActive high enable input.
TP2SWENOpen-drain signal to indicate and control power switch ON and OFF status.
TP3OVPOvervoltage protection pin.
TP4VINInput voltage.
TP5VOUTOutput voltage.
TP6TIMEROvercurrent blanking timer.
TP7TEMPMaximum device die temperature monitor analog voltage output for TPS1689 and TPS1685 in parallel.
TP8MODE2MODE selection: Secondary Device.
TP9DVDTStart-up output slew rate control.
TP10IREFReference voltage for overcurrent and amp; short-circuit protections, and active current-sharing blocks.
TP11ILIM1Individual eFuse current monitor and active current sharing threshold under steady-state: primary device.
TP12ILIM2Individual eFuse current monitor and active current sharing threshold under steady-state: secondary device.
TP13IMONLoad current monitor and overcurrent threshold and fast-trip threshold during steady-state.
TP14VDD1Controller input power: primary device.
TP15SFT_SELScalable fast trip threshold selector during steady state.
TP16FLTb1Open-drain active low fault indication: primary device.
TP17FLTb2Open-drain active low fault indication: secondary device.
TP18PGOpen-drain active high power good indication.
TP19AUXAuxiliary ADC input channel used to monitor external analog signal through PMBus. Also functions as analog input for fast comparator with internal programmable threshold.
TP20SCL-eFusePMBus clock line of eFuse.
TP21SDA-eFusePMBus data line of eFuse.
TP22SMBA#-eFuseSMBus™ alert output.
TP23S1_PKelvin sensing points to measure primary eFuse ON resistance.
TP24S1_NKelvin sensing points to measure primary eFuse ON resistance.
TP25VDD Pullup5V pullup power supply generated using a LDO from VIN.
TP26VDD2Controller input power: secondary device.
TP27+3P3V3.3V pullup power supply generated using a LDO from VIN.
TP28S2_PKelvin sensing points to measure secondary eFuse ON resistance.
TP29S2_NKelvin sensing points to measure secondary eFuse ON resistance.
QGND1, QGND2, QGND3, and QGND4QGNDDevice ground.
G1, G2, G3, and G4QGNDDevice ground.
Table 2-3 Jumper Descriptions and Default Positions
JumperLabelDescriptionDefault Jumper Position
J1

DVDT

1-2 Position sets the output slew rate to 1V/ms3-4
3-4 Position sets the output slew rate to 0.5V/ms
5-6 Position sets the output slew rate to 0.1V/ms
J2

IMON

1-2 Position sets the circuit breaker threshold to 25A with VIREF of 1V3-4
3-4 Position sets the circuit breaker threshold to 44A with VIREF of 1V
J3ILIM11-2 Position sets the active current sharing threshold to 25A with VIREF of 1V: Primary Device3-4
3-4 Position sets the active current sharing threshold to 22A with VIREF of 1V: Primary Device
J4ILIM21-2 Position sets the active current sharing threshold to 25A with VIREF of 1V: Primary Device3-4
3-4 Position sets the active current sharing threshold to 22A with VIREF of 1V: Primary Device
J5SFT_SEL1-2 Position sets the scalable fast-trip threshold at 2.5 times over-current threshold when U2 is used in primary mode3-4
3-4 Position sets the scalable fast-trip threshold at 2 times over-current threshold when U2 is used in primary mode
Table 2-4 Configuring Device Address
J7 (ADDR0)J8 (ADDR1)AddressDefault Address Set in the EVM
OPENOPEN0x400x40
GND (1-2 Position)0x41
75kΩ to GND (3-4 Position)0x42
150kΩ to GND (5-6 Position)0x43
267kΩ to GND (7-8 Position)0x44
GND (1-2 Position)OPEN0x45
GND (1-2 Position)0x46
75kΩ to GND (3-4 Position)0x47
150kΩ to GND (5-6 Position)0x48
267kΩ to GND (7-8 Position)0x49
75kΩ to GND (3-4 Position)OPEN0x4A
GND (1-2 Position)0x4B
75kΩ to GND (3-4 Position)0x4C
150kΩ to GND (5-6 Position)0x4D
267kΩ to GND (7-8 Position)0x4E
150kΩ to GND (5-6 Position)OPEN0x50
GND (1-2 Position)0x51
75kΩ to GND (3-4 Position)0x52
150kΩ to GND (5-6 Position)0x53
267kΩ to GND (7-8 Position)0x54
267kΩ to GND (7-8 Position)OPEN0x55
GND (1-2 Position)0x56
75kΩ to GND (3-4 Position)0x57
150kΩ to GND (5-6 Position)0x58
267kΩ to GND (7-8 Position)0x59
Table 2-5 LED Descriptions
LED Description
DG1 When ON, indicates that PG is asserted
DR1 When ON, indicates that FLTb is asserted
DR2 When ON, indicates that FLTb2 is asserted