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

3.2.3 VREF Input Filter

C4x and R2x are footprints for the optional VREF input filter. Default values are 0 Ω and 10 pF. However, no capacitors are installed. TP3x serves as a test-point for the filtered input to the TMCS1100 VREF pin while TP7x serves as a test point for the prefiltered input to the TMCS1100 VREF pin. J1x is a jumper that conveniently allows the TMCS1100 reference to be shorted to ground, connected directly to an external power supply, or shorted to a voltage set by a buffered voltage divider.