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30A Range Bidirectional Current Shunt Monitor Reference Design
TIDA-00614
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Description & Features

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Description

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.


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Schematic/Block Diagram

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Test Data

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA250  36V, bi-directional, precision current sense amplifier w/int. shunt resistor  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
INA250-Q1  AEC-Q100, 36V, bi-directional, precision current sense amplifier w/int. shunt resistor  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA250 Download
INA250-Q1 Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 612 30 Jun 2015
Design files (4)
Title Type Size (KB) Date
ZIP 313 20 Aug 2015
ZIP 381 20 Aug 2015
PDF 43 20 Aug 2015
PDF 236 20 Aug 2015

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