SBAU422 November   2023 TMCS1126

 

  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 Overcurrent Set Point and Overcurrent Circuitry
      4. 2.1.4 Load Connectors
      5. 2.1.5 TMCS1126 Isolated Current-Sense Amplifier
    2. 2.2 Measurements
      1. 2.2.1 19
      2. 2.2.2 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.     Trademarks
  9. 5Related Documentation From Texas Instruments

1.1 Introduction

This user’s guide describes the characteristics, operation, and use of the TMCS1126 evaluation module (EVM). This EVM is designed to evaluate the performance of the TMCS1126 voltage output isolated Hall-effect current sense amplifiers in a variety of configurations. Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the TMCS1126xEVM. This document includes a schematic, reference printed-circuit board (PCB) layouts, and a complete bill of materials (BOM).

The TMCS1126 Hall-effect current sense amplifier (also called an isolated current-sense amplifier) senses magnetic flux generated from current passing through the lead frame with reinforced isolation at common-mode voltages from 0 VDC to ±1100 VDC, independent of the supply voltage. The device is available with zero-input reference point configurations of 0.5×VS (A), 0.33×VS (B), and 0.1×VS (C), with five fixed sensitivities available: 25 mV/A, 50 mV/A, 75 mV/A, 100 mV/A, and 150 mV/A. These devices operate from a single 3-V to 5.5-V power supply, drawing a maximum of 9.2 mA of supply current.