SBAU461 May   2024 INA790B , INA791B

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5. 1.5 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  8. 2Hardware
    1. 2.1 Circuitry
      1. 2.1.1 Bypass Capacitors
      2. 2.1.2 Output Filter
      3. 2.1.3 Configurable Gain
      4. 2.1.4 Configurable Reference Voltage
      5. 2.1.5 Thermal Alert Function
      6. 2.1.6 Load Connectors
      7. 2.1.7 INA79x Current-Sense Amplifier
  9. 3Implementation Results
    1. 3.1 Operation
      1. 3.1.1 Measurements
      2. 3.1.2 Advanced Measurement Tips
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Related Documentation From Texas Instruments

2.1.5 Thermal Alert Function

The INA790x thermal alert is activated when internal shunt temperature reaches 160°C or above. The ALERT pin is open-drain and is equal to supply voltage when internal shunt temperature is below 60°C. When thermal alert function is activated, ALERT pin pulls to GND, and LED D2 on the EVM illuminates.