SLOC329 — DRV421 System Parameter Calculator
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Signalumformer
- DRV421 — Integrierter magnetischer Fluxgate-Sensor-IC für Closed-Loop-Anwendungen
The DRV421 is designed for magnetic closed-loop current sensing solutions, enabling isolated, precise dc- and ac-current measurements. This device provides both, a proprietary integrated fluxgate sensor, and the required analog signal conditioning, thus minimizing component count and cost. The low offset and drift of the fluxgate sensor, along with an optimized front-end circuit results in unrivaled measurement precision.
The DRV421 provides all the necessary circuit blocks to drive the current-sensing feedback loop. The sensor front-end circuit is followed by a filter that can be configured to work with a wide range of magnetic cores. The integrated 250-mA H-Bridge drives the compensation coil, while doubling the current measurement range, compared to conventional single-ended drive methods. The device also provides a precision voltage reference and shunt sense amplifier to generate and drive the analog output signal.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | DRV421 Integrated Magnetic Fluxgate Sensor for Closed-Loop Current Sensing datasheet (Rev. B) | PDF | HTML | 14 Mär 2016 |
| White paper | Achieve greater precision, reliability with magnetic sensing technology | 26 Jun 2017 | ||
| Application note | Designing with the DRV421: System Parameter Calculator | 14 Aug 2015 | ||
| Application note | Designing with the DRV421: Control Loop Stability | 05 Aug 2015 | ||
| Application note | Designing with the DRV421: Closed Loop Current Sensor Specifications | 22 Jul 2015 |
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The DRV421EVM is an evaluation platform for the DRV421, a complete analog front end IC and coil driver for closed loop current sensing applications. The DRV421EVM allows the user to explore all the features of the DRV421 device.
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| WQFN (RTJ) | 20 | Ultra Librarian |
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