SBAU425 July   2024 TMCS1127

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 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
  6. 2Hardware
    1. 2.1 Circuitry
      1. 2.1.1 Bypass Capacitors
      2. 2.1.2 Output Filter
      3. 2.1.3 Load Connectors
      4. 2.1.4 TMCS1127 Isolated Current-Sense Amplifier
    2. 2.2 Measurements
      1. 2.2.1 Advanced Measurement Tips
  7. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  8. 4Additional Information
    1. 4.1 Trademarks
  9. 5Related Documentation From Texas Instruments

1.3 Specification

The following are instructions to set up and use the TMCS1127xEVM. Figure 2-1 shows an example of a simple, low-side setup on the A1 (25mV/A) sensitivity variant. This device has isolation, and external supplies are distinguished by "high voltage" (HV) for load and "low voltage" (LV) for DUT supply. The HV supply can be isolated and at a different potential than the LV supply.

TMCS1127AEVM TMCS1127BEVM TMCS1127CEVM Low-Side Forward Current Setup for Reinforced IsolationFigure 1-1 Low-Side Forward Current Setup for Reinforced Isolation
  1. For greater maneuverable flexibility, break apart the EVM sub boards along the score lines. Otherwise, the board can be left intact.
  2. Attach the high-current lug connectors to IN+ and IN– of the sensitivity version to be tested.
  3. Connect the terminals of an external LV supply to the GND and VCC test points on the EVM sensitivity variant of choice. Be sure to connect GND first and make sure that the external LV supply is between 3V and 5.5V.
  4. Connect the input per Section 2.2.
WARNING:

When measuring current, verify that the equipment (wires, connectors, and more) can support the amperage and power dissipation. Then verify that the current flowing through the inputs of the device is kept within the safe operating area limits of the device found in the TMCS1127 250kHz Hall-Effect Current Sensor With Reinforced Isolation Working Voltage and Ambient Field Rejection data sheet. Failure to adhere to these limits can result in damage to the EVM, or personal injury.

Do not touch the HV terminals.

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