Fluxgate Magnetic Current Sensing Reference Design with High Linearity for 3–Phase Inverters
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 measurementCalibrated current measurement accuracy of ±1% (typical) across temperature range from -25 °C to 85 °CHardware based overload and ground fault detection enables fast response for protection of power switches
Applications
- String Inverters
- AC Drive Power Stage Module
- Micro Inverters
- Injection Molding Machines
- AC Charging (Pile) Station
- AC Drive Energy Recovery
- Servo Drive Power Stage Module
- Brushless DC Motor Drives
- AC / DC Power Sources
- Motor Brakes
- Motor Overload Relays & Contactors
- Servo Drive Energy Recovery
Product Categories
- Sensing Products
| Download the bill of materials for TIDA-00905 | Download |
Test Data
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Download the test file for TIDA-00905| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00905 Gerber | 20 Jul 2016 | ZIP | 379 | |
| TIDA-00905 CAD Files | 20 Jul 2016 | ZIP | 3029 | |
| TIDA-00905 PCB | 20 Jul 2016 | 3365 | ||
| TIDA-00905 Assembly Drawing | 20 Jul 2016 | 326 | ||
| TIDA-00905 BOM | 20 Jul 2016 | 91 | ||
| TIDA-00905 Schematic and Block Diagram | 20 Jul 2016 | 1216 |