SLVUCH7A september   2022  – june 2023 TPS25990

 

  1.   1
  2.   TPS25990EVM: Evaluation Module for TPS25990 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 and Setup
      1. 4.2.1 Power supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 USB-to-GPIO Interface Adapter
      5. 4.2.5 Loads
  8. 5Test Setup and Procedures
    1. 5.1  Hot Plug
    2. 5.2  Start-up with Enable
    3. 5.3  Current Limit Based Start-up Behavior
    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 TPS25990EVM
  9. 6Using the TPS25990EVM-GUI
    1. 6.1 Access the TPS25990EVM-GUI
    2. 6.2 Introduction to the TPS25990EVM-GUI
    3. 6.3 Establishing Communication Between the EVM and GUI
    4. 6.4 Quick Info
    5. 6.5 Configuration
    6. 6.6 Telemetry
    7. 6.7 Blackbox
    8. 6.8 Register Map Page
  10. 7EVAL Board Assembly Drawings and Layout Guidelines
    1. 7.1 PCB Drawings
  11. 8Bill Of Materials (BOM)
  12. 9Revision History

4.1 Physical Access

Table 4-1 lists the TPS25990EVM eFuse Evaluation Board input and output connectors functionality. Table 4-2 and Table 4-3 describe the availability of test points and the functionality of the jumpers. Table 4-4 summarizes the way to configure the device address. Table 4-5 presents the function of the signal LED.

Table 4-1 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 4-2 Test Points Description
Test PointsLabelDescription
TP1S1_PKelvin sensing points to measure
  • Combined on-resistance with both TPS25990 & TPS25985 eFuses enabled,
  • On-resistance of the primary device, TPS25990 (U1) when the secondary device, TPS25985 (U2) disabled.
TP2S1_N
TP3VINInput Voltage
TP4VOUTOutput Voltage
TP5MODE2MODE selection: Secondary Device
TP6FLTb2Open-drain active low fault indication: Secondary Device
TP7VDDController input power
TP8FLTbOpen-drain active low fault indication: Primary Device
TP9SWENOpen-drain signal to indicate and control power switch ON and OFF status
TP10TEMPMaximum device die temperature monitor analog voltage output with TPS25990 and TPS25985 in parallel
TP11CMPM2General purpose comparator negative input: Secondary Device
TP12AUX

Auxiliary ADC input channel used to monitor external analog signal through PMBus

Also functions as analog input for fast comparator with internal programmable threshold

TP13CMPP2General purpose comparator positive input: Secondary Device
TP14CMPOUT2General purpose comparator open-drain output: Secondary Device
TP15DVDTStart-up output slew rate control
TP16DAC1Programmable DAC analog buffered current output
TP17IMONLoad current monitor and overcurrent threshold and fast-trip threshold during steady-state
TP18ILIM2Current limit and fast-trip threshold during start-up: Secondary Device
TP19ILIMCurrent limit and fast-trip threshold during start-up: Primary Device
TP20IREFReference voltage for overcurrent & short-circuit protections, and active current sharing blocks
TP21PGOpen-drain active high power good indication
TP22ENActive high enable input
TP23ADDR0PMBus Address Configuration Pin
TP24ADDR1PMBus Address Configuration Pin
TP25SMBASMBus™ alert output
TP26SDAPMBus data line
TP27SCLPMBus clock line
TP28+3P3V Pullup3.3 V pullup power supply generated using a LDO from VIN
TP29+5V Pullup5 V pullup power supply generated using a LDO from VIN
TP30GD EXTERNALExternal gate signal for custom load transient
TP31PGNDSupply ground
QGND1QGNDDevice ground
G1QGNDDevice ground
G2QGNDDevice ground
Table 4-3 Jumper Descriptions and Default Positions
JumperLabelDescriptionDefault Jumper Position
J2SWEN1-2 Position: The SWEN pullup supply is generated from VIN using a Zener diode1-2
3-4 Position: The SWEN pullup supply is generated from VIN using a LDO
J3DVDT1-2 Position sets the output slew rate to 1.8 V/ms5-6
3-4 Position sets the output slew rate to 12 V/ms
5-6 Position sets the output slew rate to 1.2 V/ms
J4ILIM1-2 Position sets the inrush current limit to 25 A and the active current sharing threshold to 40 A with VIREF of 1 V: Primary Device1-2
3-4 Position sets the inrush current limit to 19 A and the active current sharing threshold to 30 A with VIREF of 1 V: Primary Device
J5ILIM21-2 Position sets the inrush current limit to 32 A and the active current sharing threshold to 50 A with VIREF of 1 V: Secondary Device1-2
3-4 Position sets the inrush current limit to 38 A and the active current sharing threshold to 60 A with VIREF of 1 V: Secondary Device
J6IMON1-2 Position sets the circuit breaker threshold to 70-A with VIREF of 1-V: Both primary and secondary devices are connected in parallel1-2
3-4 Position sets the circuit breaker threshold to 110-A with VIREF of 1-V: Both primary and secondary devices are connected in parallel
J9EXTERNAL GATE SIGNAL1-2 Position provides the GATE signal to the MOSFETs (Q4 – Q6) from the on-board mono-shot timer1-2
2-3 Position provides the GATE signal to the MOSFETs (Q4 – Q6) from the external signal generator
Table 4-4 Configuring Device Address
J7 (ADDR0)J8 (ADDR1)AddressDefault Address Set in the EVM
OPENOPEN0x400x46
GND (1-2 Position)0x41
75 kΩ to GND (3-4 Position)0x42
150 kΩ to GND (5-6 Position)0x43
267 kΩ to GND (7-8 Position)0x44
GND (1-2 Position)OPEN0x45
GND (1-2 Position)0x46
75 kΩ to GND (3-4 Position)0x47
150 kΩ to GND (5-6 Position)0x48
267 kΩ to GND (7-8 Position)0x49
75 kΩ to GND (3-4 Position)OPEN0x4A
GND (1-2 Position)0x4B
75 kΩ to GND (3-4 Position)0x4C
150 kΩ to GND (5-6 Position)0x4D
267 kΩ to GND (7-8 Position)0x4E
150 kΩ to GND (5-6 Position)OPEN0x50
GND (1-2 Position)0x51
75 kΩ to GND (3-4 Position)0x52
150 kΩ to GND (5-6 Position)0x53
267 kΩ to GND (7-8 Position)0x54
267 kΩ to GND (7-8 Position)OPEN0x55
GND (1-2 Position)0x56
75 kΩ to GND (3-4 Position)0x57
150 kΩ to GND (5-6 Position)0x58
267 kΩ to GND (7-8 Position)0x59
Table 4-5 LED Descriptions
LEDDescription
DG1When ON, indicates that PG is asserted
DR1When ON, indicates that FLTb is asserted
DR2When ON, indicates that FLTb2 is asserted