100A Closed-Loop Current Sensor Reference Design using Bi-Polar Supplies


Design files


This TI Precision Verified Design provides a complete 100 A closed loop Hall based current sensor solution using the DRV411 with bi-polar popwer supplies.  The DRV411 provides Hall excitation, a compensation coil driver and a precision difference amplifier in a single package.  The unique current spinning technology employed on the DRV411 virtually eliminates the offset and 1/f noise of the Hall device.

  • 100A Closed Loop Current Sensor
  • Utilizes the DRV411
  • Galvanic Isolation
  • Bi-Polar Supplies


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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDC999.ZIP (791 K)

Detailed schematic diagram for design layout and components


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Includes TI products in the design and potential alternatives.

Precision op amps (Vos<1mV)

OPA237Single-Supply Operational Amplifiers MicroAmplifier™ Series

Data sheet: PDF
Signal conditioners

DRV411Hall-Effect Magnetic Sensor Signal Conditioning IC for Closed-Loop Applications

Data sheet: PDF

Technical documentation

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Type Title Date
* User guide +/-100-A Closed-Loop Current Sensor Reference Design Using Bipolar Supplies Mar. 03, 2015

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