SBOU249 December   2020 TMCS1108 , TMCS1108-Q1

 

  1.   Trademarks
  2. 1General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  3. 2Overview
    1. 2.1 Kit Contents
    2. 2.2 Related Documentation From Texas Instruments
  4. 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 Measurement Connector
      4. 3.2.4 Load Connectors
      5. 3.2.5 Ground Test Points
      6. 3.2.6 TMCS1108 Isolated Current-Sense Amplifier
      7. 3.2.7 Temperature Sensor
  5. 4Operation
    1. 4.1 Measurements
    2. 4.2 Advanced Measurement Tips
  6. 5Schematics, PCB Layout, and Bill of Materials
    1. 5.1 Schematics
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials

3.2.4 Load Connectors

T1xy and T2xy correspond to the high-current rated load connectors. By default, the EVM is only populated with two of these connectors on the bidirectional, lowest gain variant (x = B and y = A). The IN+ (T1xy) and IN– (T2xy) inputs accept a load that is converted to a magnetic field sensed by a Hall element that produces a voltage. This voltage is amplified by the selected device gain and is presented at the VOUT test point (TP2xy). The acceptable load input maximum is 30 A for DC measurements. However, the load can be significantly higher for AC signals, and the load is bound by the safe operating area (SOA) described in the TMCS1108 data sheet.