SBOU209B August   2019  – August 2021 TMCS1100 , TMCS1100-Q1

 

  1.   1
  2.   Trademarks
  3. 1General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  4. 2Overview
    1. 2.1 Kit Contents
    2. 2.2 Related Documentation From Texas Instruments
  5. 3Hardware
    1. 3.1 Features
    2. 3.2 Circuitry
      1. 3.2.1  Bypass Capacitors
      2. 3.2.2  Output Filter
      3. 3.2.3  VREF Input Filter
      4. 3.2.4  Buffer Amplifier Filter and Divider
      5. 3.2.5  Measurement Connector
      6. 3.2.6  Load Connectors
      7. 3.2.7  Ground Test Points
      8. 3.2.8  TMCS1100 Isolated Current-Sense Amplifier
      9. 3.2.9  Temperature Sensor
      10. 3.2.10 Reference Divider Buffer
  6. 4Operation
    1. 4.1 Measurements
    2. 4.2 Advanced Measurement Tips
  7. 5Schematics, PCB Layout, and Bill of Materials
    1. 5.1 Schematics
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials
  8. 6Revision History

4.1 Measurements

The following procedures are used to configure a measurement evaluation with an electronic load. For the following instructions, x = A to D for the A1 to A4 gain variants, respectively.

  1. According to Figure 4-1, for a low-side measurement, connect the electronic load positive input terminal to the positive terminal of a ≥ 20-A capable hot-supply. For a high-side measurement, connect the electronic load positive input terminal to the load sourcing terminal (IS+ or IS–) of the EVM. For high-side measurement of forward current, IS– sources to the electronic load; for reverse current, IS+ sources to the load. Reverse current can only be measured if VREF is set to a potential higher than GND.
  2. Connect the electronic load negative output terminal to the external hot supply GND terminal for high-side measurements, or to the load sinking terminal of the EVM for low-side measurements.
  3. For high-side measurements, connect the external supply to the load sinking terminal of the EVM. Otherwise, for low-side measurements, connect the load sourcing terminal of the EVM (IS+ or IS–) to the external supply GND.
  4. Turn on all the connected supplies.
  5. Apply load with electronic load.
  6. Measure the output voltage at the VOUT test point.
Note:

The output voltage is equal to the gain of the device multiplied by the load current passing through the leadframe of the DUT.