Importance

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Abstract

A rectifier device is described herein. In accordance with one example, the rectifier includes a first MOS transistor, which has a load current path and a diode connected parallel to the load current path, wherein an alternating input voltage is operably applied across the load current path and the diode. The rectifier device further includes a control circuit that is configured to switch on the first MOS transistor for an on-time period, during which the diode is forward biased. A stand-by detection circuit includes a cycle detection circuit configured to detect cycles of the alternating input voltage and a timer that is coupled to the cycle detection circuit. The timer is configured to be reset by the cycle detection circuit upon detection of a cycle of the alternating input voltage, and to disconnect a supply line of the control circuit unless reset before a maximum time span has elapsed.

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First Claim