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

2 Overview

The TMCS1100 Hall-effect current sense amplifier (also called an isolated current-sense amplifier) senses magnetic flux generated from current passing through the lead frame at common-mode voltages from 0 VDC to 600 VDC, independent of the supply voltage. Four fixed gains are available: 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A. These devices operate from a single 3-V to 5.5-V power supply, drawing a maximum of 5 mA of supply current per amplifier channel. The TMCS1100 is currently available in an 8-pin, SOIC, surface-mount package. Table 2-1 lists the available gain options.

Table 2-1 TMCS1100Ax Device Summary
ProductGain
TMCS1100A150 mV/A
TMCS1100A2100 mV/A
TMCS1100A3200 mV/A
TMCS1100A4400 mV/A