High Accuracy AC Current Measurement Reference Design using PCB Rogowski Coil Sensor

(ACTIVE) TIDA-01063

Description & Features

Technical Documents

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Key Document

Description

TIDA-01063 is a reference design for current sensing using a PCB Rogowski Coil sensor to achieve very good linearity for wide measurement range at very low system BOM cost. PCB Rogowski sensor is advantageous for isolated current measurement due to very high bandwidth of 20 MHz and fast settling time of 50 ns. Auto-zeroing, 12nV/√Hz noise density of INA188 makes it suitable to achieve 12 bit system resolution for full scale current of 1000 A. Using simple IIR digital integration algorithm and scalable sampling rate it is possible to achieve better magnitude and phase response.

Features
  • 0.058% Non-Linearity (Least Square Best Fit Straight Line)
  • Very high sensor bandwidth of 20 MHz
  • Uncalibrated accuracy of 0.2%
  • Theoretical settling time of 50 ns
  • No core saturation

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


  




TI Devices (4)

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
INA188  36-V, Zero-Drift, Rail-to-Rail-Out Instrumentation Amplifier  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM2776  Switched Capacitor Inverter  Buck/Boost, Inverting or Split-Rail  Sample & Buy View Design Kits & Evaluation Modules
LP5907  250mA Ultralow-Noise Low-IQ LDO  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
REF2025  8 ppm/°C Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference  Voltage Reference  Sample & Buy Not Available

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 1704 05 Jul 2016 1,150
Design files (7)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 373 07 Jun 2016 850
PDF 321 07 Jun 2016 176
PDF 81 07 Jun 2016 82
PDF 822 07 Jun 2016 157
PDF 173 07 Jun 2016 56
ZIP 408 07 Jun 2016 108
ZIP 1328 07 Jun 2016 119
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
Three Phase AC Current Measurements Using Current Transformer Reference Design  TIDA-00753  TI Designs

Software (1)




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