Stmicroelectronics S.r.l.

Giuseppe Di Biase

Vanni Poletto

Alberto Poma

Claudio Serratoni

Matteo Amighini

In an embodiment a method includes: sensing a first signal indicative of magnetization of a winding in a dynamoelectric machine; applying the first signal to a window comparator having a comparator window between upper and lower thresholds and generating window exit signals indicative of the first signal exiting the comparator window of the window comparator; generating a slowed-down replica signal of the first signal; updating the comparator window of the window comparator as a function of the slowed-down replica signal; and issuing a wake-up signal towards a control device of the dynamoelectric machine as a result of one of the window exit signals indicating the first signal exiting the comparator window of the window comparator for a time duration in excess of a duration threshold.

Signal detection method, corresponding circuit, device and system

An electronic circuit includes a node coupled to a load to be driven, and a power device, which can be switched between activation and deactivation and coupled to the node. The circuit further includes a current generator having an output connected to the node and that can be enabled to generate current at least when the power device is deactivated. The circuit also includes a comparator for comparing an electric voltage of the node with a reference voltage and is configured to generate a comparison signal based thereon.

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Tromello, Italy

Giuseppe Di Biase