TIDA-00614

30-A Range Bidirectional Current Shunt Monitor Reference Design

TIDA-00614

Design files

Overview

This verified design can accurately measure current across a range of 30 A on a bus that carries up to 36-V common mode voltage over a range of -40°C to +85°C.  This design can measure current from 0 A to 30 A with a grounded reference or -30 A to 0 A with a 16-V reference.  The design sums the output of two INA250A2 devices and generates a ground-referenced output voltage.  The INA250 is a voltage-output, current-sensing amplifier family that integrates an internal shunt resistor to enable high-accuracy current measurements.

Features

•  Compact layout with good thermal properties

• 30A Sustained current measurement with parallel integrated shunt current sense amplifiers

• Able to configure for full-range positive, full-range negative, or partial-range bidirectional current measurement

• This circuit design is tested and includes documentation, data, and layout files.

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.

TIDUA90.PDF (612 K)

Reference design overview and verified performance test data

TIDRGG6.PDF (236 K)

Detailed schematic diagram for design layout and components

TIDRGG7.PDF (43 K)

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

TIDRGG8.ZIP (381 K)

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

TIDCAR8.ZIP (313 K)

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

Products

Includes TI products in the design and potential alternatives.

Current sense amplifiers analog output

INA25036V, bi-directional, precision current sense amplifier w/int. shunt resistor

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

INA250-Q1AEC-Q100, 36V, bi-directional, precision current sense amplifier w/int. shunt resistor

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Design guide 30-A Range Bidirectional Current Shunt Monitor Design Guide Jun. 30, 2015

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