TIDA-01141

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

TIDA-01141

Design files

Overview

This reference design is ±100-A shunt-based, high-side continuous bidirectional 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 reducing power loss and shunt sizing.

Features
  • Shunt-based ±100-A continuous bidirectional current measurement 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 system efficiency
  • High-side current sense for batteries ranging from 6 V to 60 V (12 V/24 V/36 V/48 V) and common-mode voltage up to 80 V
  • Adaptable for current sensing even close to fast-switching nodes without any external common-mode filtering
  • Fast (<10 us) over-current fault alert in either direction for system safety, with programmable threshold
Industrial

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.

TIDUCD7.PDF (1502 K)

Reference design overview and verified performance test data

TIDRP25.PDF (254 K)

Detailed schematic diagram for design layout and components

TIDRP26.PDF (115 K)

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

TIDRP27.PDF (45 K)

Detailed overview of design layout for component placement

TIDRP29.ZIP (2019 K)

Files used for 3D models or 2D drawings of IC components

TIDCD00.ZIP (539 K)

Design file that contains information on physical board layer of design PCB

TIDRP28.PDF (329 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Comparators

LM393APrecision dual differential comparator, industrial grade

Data sheet document-pdfAcrobat PDF open-in-new HTML
Current sense amplifiers analog output

INA240-4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

LM4041A121.2-V precision micropower shunt voltage reference with 0.1% accuracy

Data sheet document-pdfAcrobat PDF

Technical documentation

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Type Title Date
* Design guide ±100A, <1% Accurate, Shunt-Based, High-Side, Bidirectional Current Design Guide Dec. 09, 2016

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