A broadband current sensor, which is fully integrated and galvanically-isolated, is presented in this paper. The current sensor relies only on a Hall-effect probe to realize the magnetic sensing core so as to minimize the cost and the occupied space. Bandwidth limitations of state-of-the-art Hall-effect probes are overcame by combining the novel X-Hall architecture with a wide bandwidth differential-difference current-feedback amplifier. A prototype implemented in 0.16 μm BCD technology demonstrates a bandwidth wider than 20 MHz. Offset, sensitivity and power consumption are comparable to the state of the art. This is the first Hall-only current sensor achieving a bandwidth higher than 3 MHz.

A broadband current sensor based on the X-Hall architecture

Crescentini M.;Biondi M.;Ramilli R.;Traverso P. A.;Gibiino G. P.;Romani A.;Tartagni M.;
2019

Abstract

A broadband current sensor, which is fully integrated and galvanically-isolated, is presented in this paper. The current sensor relies only on a Hall-effect probe to realize the magnetic sensing core so as to minimize the cost and the occupied space. Bandwidth limitations of state-of-the-art Hall-effect probes are overcame by combining the novel X-Hall architecture with a wide bandwidth differential-difference current-feedback amplifier. A prototype implemented in 0.16 μm BCD technology demonstrates a bandwidth wider than 20 MHz. Offset, sensitivity and power consumption are comparable to the state of the art. This is the first Hall-only current sensor achieving a bandwidth higher than 3 MHz.
2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
807
810
Crescentini M.; Biondi M.; Ramilli R.; Traverso P.A.; Gibiino G.P.; Romani A.; Tartagni M.; Marchesi M.; Canegallo R.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/736155
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