Patent ID: 9160159
Filing Date: 2015-10-13
Classification: H02H,H03K

Abstract:
1. An apparatus, comprising: an input node configured to receive an input voltage; an output node coupled to the input node and configured to carry an output current; a generator configured to generate a threshold signal that represents a threshold voltage; a current sensor configured to generate a sense voltage that represents the output current; an analog-to-digital converter configured to convert the input voltage, the sense voltage, and the threshold signal into a digital voltage value, a digital sense-voltage value, and a digital threshold value, respectively; a multiplexer configured to selectively couple the threshold signal, the input voltage, and the sense voltage to the analog-to-digital converter; and a digital circuit coupled to the analog-to-digital converter and configured to uncouple the output node from the input node in response to a digital product of the digital voltage value and the digital sense-voltage value exceeding the digital threshold value.