DESCRIPTION

· The DRV421 is an integrated magnetic fluxgate sensor designed for closed-loop current sensing solutions.

· It enables precise isolated DC and AC current measurements with minimal component count and cost.

· The device includes a proprietary fluxgate sensor and analog signal conditioning for optimized performance.

· It features a 250-mA H-Bridge driver for the compensation coil, extending the current measurement range.

· The DRV421 also includes a precision voltage reference and shunt sense amplifier for analog output signal generation.

FEATURES

· High-precision integrated fluxgate sensor with low offset and drift.

· Extended current measurement range with H-Bridge output drive.

· Precision shunt sense amplifier with low offset, drift, and gain error.

· Pin-selectable precision voltage reference with ratiometric mode option.

· Magnetic core degaussing feature and diagnostic flags for overrange and error detection.

· Wide supply voltage range from 3.0V to 5.5V, fully specified for industrial temperature ranges.

APPLICATIONS

· Closed-loop DC and AC current sensor modules.

· Leakage current sensors and industrial monitoring systems.

· Overcurrent detection and frequency, voltage, and solar inverters.