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Texas Instruments LM2776 | Demoboard TIDA-01063
High Accuracy AC Current Measurement Reference Design using PCB Rogowski Coil Sensor
Overview
| Topology | High Voltage Output |
| Input voltage | 2.5-5.5 V |
| Output 1 | -3.3 V |
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
Remark: BOM and Schematics are added with EVM board.
- 0.058% Nonlinearity (Least Square Best FitStraight 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 SingleSensor
- Low Footprint and BOM Cost
Typical applications
- HVAC Systems: HVAC Motor Control, Compressor, Chiller, Blower
- Elevators and Escalators: Traction Inverter Motor Control
- ID and FD Fan, Screw Feeder, Feed Pump, Steam Boiler
More information
Products
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
 | 150060GS75000 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | Samples |
|---|