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TIPD156

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

Design files

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.

download Schematic — TIPD156
TIDR714.PDF (92 K)

Detailed schematic diagram for design layout and components

download Schematic — TIPD156
TIDC444.ZIP (1230 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIPD156
TIDR715.PDF (110 K)

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

download Gerber file — TIPD156
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

INA213 — 26V, bi-directional, high-precision current sense amplifier

Data sheet: PDF | HTML
Series voltage references

REF1925 — 2.5-V Vref, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF1930 — 3-V Vref, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF1933 — 3.3-V Vref, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF1941 — 4.1-V Vref, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF2025 — 8-ppm/°C drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF2030 — 3-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF2033 — 3.3-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Series voltage references

REF2041 — 4.1-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML

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Software

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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