TIPD156

Low-Drift Bidirectional Single-Supply Low-Side Current Sensing Reference Design

TIPD156

Design files

Overview

This Verified TI Precision Design implements a low-drift, bi-directional, low-side, single-supply current sensing solution that measures load currents from -2.5 A to +2.5 A.  The output range is from 250 mV to 2.75 V, with 0 A current centered at 1.5 V.  To achieve low-drift performance, the solution utilizes the INA213B and REF2030.  The design’s functionality and performance were verified by fabricating a PCB and measuring results over temperature from -40 °C to 125 °C.

Features
  • Low-side current sensing
  • Measured load current: +/-2.5 A
  • 250mV to 2.75V output
  • 0 A centered at 1.5 V
  • ±0.0522% Full-scale range error (-40 °C to 125 °C)
  • Low-drift, Single-supply
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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.

TIDR714.PDF (92 K)

Detailed schematic diagram for design layout and components

TIDC444.ZIP (1230 K)

Detailed schematic diagram for design layout and components

TIDR715.PDF (110 K)

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

TIDC460.ZIP (282 K)

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

Products

Includes TI products in the design and potential alternatives.

Analog current-sense amplifiers

INA21326V, bi-directional, high-precision current sense amplifier

Data sheet: PDF | HTML
Series voltage references

REF19252.5-V Vref, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF19303-V Vref, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF19333.3-V Vref, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF19414.1-V Vref, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF20258-ppm/°C drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF20303-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF20333.3-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF20414.1-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML

Start development

Software

Support software

TIDC461 TIPD156 Test Files

Support software

TIDC462 TIPD156 Simulation

Technical documentation

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* User guide Low-Drift Bidirectional Single-Supply Low-Side Current Sensing Design Guide (Rev. A) Jun. 16, 2014

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