The 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 a very low system BOM cost. The PCB Rogowski sensor is advantageous for isolated current measurement due to its very high bandwidth of 20 MHz and fast settling time of 50 ns. The auto-zeroing, 12-nV/(square root)Hz noise density of the INA188 makes it suitable to achieve a 12-bit system resolution for a full-scale current of 1000 A. Using a simple IIR digital integration algorithm and scalable sampling rate, it is possible to achieve better magnitude and phase response.
Design Features
0.058% Nonlinearity (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
Current Sensing for Multi-Conductor Using Single Sensor
Low Footprint and BOM Cost
Featured Applications
HVAC Systems: HVAC Motor Control
- Compressor, Chiller, Blower
- ID and FD Fan, Screw Feeder, Feed Pump, Steam Boiler
Elevators and Escalators: Traction Inverter Motor Control
Manufacturer | Texas Instruments |
---|---|
Category | Sensor Solutions |
Sub-Category | Current Sensing |
Eval Board |
Board not Stocked
|
Voltage In |
3.5 ~ 6.5 V
|
Sensing Method |
Rogowski coil
|
Current Sensing Max |
1000 A
|
Features |
GUI / Design Software
No Core Saturation |
Quiescent Current [Maximum] |
5 mA
|
Quiescent Current [Typical] |
- Not Given
|
Component Count + Extras |
61 + 12
|
Design Author |
Texas Instruments
|
Main I.C. Base Part | |
Date Created By Author | |
Date Added To Library | 2019-01 |