http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fds%2Fsymlink%2Ftmcs1123.pdf”>View Datasheet

Texas Instruments TMCS1123 Precision Hall-Effect Current Sensors

Texas Instruments TMCS1123 Precision Hall-Effect Current Sensors are designed to address the need for highly accurate current measurements in high-voltage systems such as electric vehicle (EV) charging and solar energy. These galvanically isolated sensors offer up to 80ARMS at +25°C and robust reinforced isolation with 1100VDC reinforced working voltage and 5000VRMS withstand isolation voltage. The precision signal conditioning circuitry with built-in drift compensation achieves less than 1.75% maximum total error over temperature and lifetime with no system-level calibration, making the TMCS1123 series a highly accurate solution throughout the lifetime of the system. The devices can be used for both AC and DC current measurements and offer a bandwidth of 250kHz. TI TMCS1123 Precision Hall-Effect Current Sensors operate with a low voltage supply from 3V to 5.5V and come in an SOIC (DVG) 10-pin package.

Features

  • Up to 80ARMS continuous current capability
  • Robust reinforced isolation
    • 5000VRMS withstand isolation voltage
    • 1100VDC reinforced working voltage
  • Low 0.5% lifetime drift (maximum)
  • High accuracy
    • 0.3% sensitivity error
    • 20ppm/°C sensitivity drift
    • 0.5mV offset error
    • 5µV/°C offset drift
    • 0.1% linearity error
  • High immunity to external magnetic fields
  • Precision zero-current reference output
  • 250kHz signal bandwidth
  • Low 600ns propagation delay
  • Fast 500ns overcurrent detection response
  • 3V to 5.5V operating supply range
  • Bidirectional and unidirectional current sensing
  • SOIC (DVG) 10-pin package
  • Safety-related certifications (planned)
    • UL 1577 component recognition program
    • IEC/CB 62368-1

Applications

  • Solar energy
  • Motor control
  • EV charging
  • Power supplies
  • Industrial AC/DC
  • Overcurrent protection

Typical Application

Application Circuit Diagram - Texas Instruments TMCS1123 Precision Hall-Effect Current Sensors

Functional Block Diagram

Block Diagram - Texas Instruments TMCS1123 Precision Hall-Effect Current Sensors

Pin Functions

Location Circuit - Texas Instruments TMCS1123 Precision Hall-Effect Current Sensors

Texas Instruments TMCS1123 Precision Hall-Effect Current Sensors