Shunt-Based, <1% Accurate, ±100A, High-Side, Bi-directional Current Measurement Reference Design
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Key Document


The TIDA-01141 TI design provides a reference solution for ±100A shunt-based, high-side continuous bi-directional current measurement addressing applications such as battery current monitoring and current monitoring in UPS, Telecom Rectifiers and Server PSUs. This design achieves high accuracy with low shunt resistance value thus reducing power loss and hence shunt sizing.

  • Shunt-based ±100A continuous bi-directional current measurement solution for accurate current monitoring applications
  • Tight DC accuracy of <1% across temperatures from  25˚C to 85˚C
  • Low shunt value offers reduced power loss and enhances the system efficiency
  • High-side current sense solution  for batteries ranging from 6V to 60V (12V/24V/36V/48V) and common mode voltage up to 80V
  • Adaptable for current sensing even close to fast switching nodes without any external common-mode filtering
  • Fast (<10us) over-current fault alert in either direction for system safety, with programmable threshold

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Schematic/Block Diagram

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Design Files

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA240  -4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM393A  Precision dual differential comparator, industrial grade  Amplifiers  Sample & Buy Not Available
LM4041A12  1.2-V precision micropower shunt voltage reference with 0.1% accuracy  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA240 Download
LM393A Download Download
Download Download
Download Download
Download -
Download Download
LM4041A12 Download Download
Download -
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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 1502 09 Dec 2016
Design files (6)
Title Type Size (KB) Date
ZIP 539 09 Dec 2016
ZIP 2019 09 Dec 2016
PDF 329 09 Dec 2016
PDF 45 09 Dec 2016
PDF 115 09 Dec 2016
PDF 254 09 Dec 2016

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