TIDA-00218

Contactless AC-Current Sensing Using a Hall Effect Sensor

TIDA-00218

Design files

Overview

This reference design uses our hall sensing technology to determine the amount of AC current flowing through a wire without any physical intervention. TIDA-00218 implements a flux concentrator to concentrate the flux around the AC-current carrying wire, rather than letting it escape in air, and then directing that flux to a hall sensor.

Features
  • Contactless proximity current sensing for AC and 3-phase input currents
  • Maximum measured error less than 5% from 1-A to 10-A rms
  • Flux concentrator as described in this design improves the magnetic flux density by a factor of six (15 dB)
  • Only single-point gain correction at maximum current range; second-order curve fit implemented in firmware
  • Maximum current that is sensed can be adapted by changing the flux concentrator design

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.

TIDRB30.PDF (169 K)

Detailed schematic diagram for design layout and components

TIDRB31.PDF (49 K)

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

TIDRB32.PDF (291 K)

Detailed overview of design layout for component placement

TIDRB34.ZIP (1118 K)

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

TIDC687.ZIP (397 K)

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

TIDRB33.PDF (1859 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Digital temperature sensors

TMP103±2°C Digital temperature sensor with I2C/SMBus capable of 1.4V in WCSP

Data sheet document-pdfAcrobat PDF open-in-new HTML
ESD & surge protection ICs

TPD3E0013 channel 1.5-pF, 5.5-V, ±8kV ESD protection diode with 1-nA max leakage & VCC pin for USB 2.0

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7A16100-mA, 60-V, ultra-low-IQ, low-dropout (LDO) voltage regulator with power good and enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear Hall-effect sensors

DRV5053High voltage (up to 38V), linear hall effect sensor

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430F552925 MHz MCU with 128KB Flash, 8KB SRAM, 12-bit ADC, comparator, DMA, UART/SPI/I2C, USB, HW multiplier

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

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* User guide Contactless AC-Current Sensing Using a Hall Effect Sensor Reference Design (Rev. A) Feb. 25, 2015
Technical article A smarter way for solar to power the grid – think inside the box May 05, 2016

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​

Videos