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

3.1 Operation

The following are instructions to set up and use the INA79xEVM. Figure 4-1 shows an example of a simple, high-side setup . The high voltage source for load is noted as VCM. The low voltage DUT supply is noted as VS. The shorting jumpers A, B and C are installed such that VREF equals to GND and the DUT gain is 40mV/A.

INA790AEVM, INA790BEVM, INA791AEVM, INA791BEVM High-side Forward Current Setup Figure 3-1 High-side Forward Current Setup
  1. Attach the high-current lug connectors to IS+ and IS–.
  2. Connect the terminals of an external VS supply to the GND and VS test points on the EVM.
  3. Connect the input per Section 3.1.1.
WARNING:

When measuring current, first make sure that equipment (wires, connectors, and so forth) can support the amperage and power dissipation. Secondly, make sure that current flowing through the inputs of the device is kept within the safe operating area limits of the device found in the device data sheet. Failure to do so can result in damage to the EVM, or personal injury.

Do not touch the high voltage VCMterminals.

Hot surface. Contact can cause burns. Do not touch.