Fluxgate Magnetic Current Sensing Reference Design with High Linearity for 3–Phase Inverters

(ACTIVE) TIDA-00905

Description & Features

Technical Documents

Support & Training

Order Now


View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Key Document

Description

The TIDA-00905 reference design provides a reference solution for accuracy, high linearity and the galvanic isolation required for current measurement in three phase inverters using closed-loop fluxgate magnetic current sensors. It consists of magnetic core with compensation winding interfaced to driver IC with built-in fluxgate sensor. The design provides a pseudo differential output with an option to connect to 3.3V or 5V ADCs. Hardware circuit for over current and ground fault detection enables over-current protection of power switches.

Features
  • Designed to accurately measure three phase inverter currents up to 50ARMS (nominal) and 150A (maximum)
  • 200 kHz bandwidth, closed-loop current sensing using magnetic module and fluxgate sensor (DRV421) to enable low propagation delay in current measurement
  • Calibrated current measurement accuracy of ±1% (typical) across temperature range from -25°C to 85°C
  • Hardware based overload and ground fault detection enables fast response for protection of power switches

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DRV421  Integrated Fluxgate Magnetic Sensor IC for Closed-Loop Applications  Magnetic Sensors  Sample & Buy View Design Kits & Evaluation Modules
TLC372  Dual General Purpose LinCMOS™ Differential Comparator  Amplifiers  Sample & Buy Not Available
TLV1117LV  1-A, Positive Fixed Voltage, Low-Dropout Regulator  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 3130 07 Nov 2016 614
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 379 20 Jul 2016 120
ZIP 3029 20 Jul 2016 47
PDF 3365 20 Jul 2016 152
PDF 326 20 Jul 2016 56
PDF 91 20 Jul 2016 85
PDF 1216 20 Jul 2016 631


Support & Training

TI E2E Community

As a member of  myTI you can join the TI E2E™ Community  where you can ask questions, share ideas and collaborate with fellow engineers and TI experts

Content is provided "AS IS" by the respective TI and Community contributors and does not constitute TI specifications. See  Terms of use.

Engage in the Community

Blogs

Wikis

Visit the TI Wiki