Patent ID: 9086435
Filing Date: 2015-07-21
Classification: G01R,H05B

Abstract:
1. A circuit comprising: a voltage converter operable to receive an input voltage and generate an output voltage defined between a high voltage rail and a low voltage rail coupled to the output of the voltage converter; a current sense circuit coupled to the voltage converter at a node to receive a sense current, the current sense circuit comprising a resistor coupled in parallel with at least one transistor, the at least one transistor being activated during a first state of the current sense circuit to reduce the resistance of the current sense circuit and being deactivated during a second state; and a current determination apparatus coupled to the current sense circuit and operable to sample a current sense voltage at the node during the second state; wherein the voltage converter is operable to receive a voltage control signal to selectively allow the sense current to flow to the current sense circuit and the current determination apparatus is operable to sample the current sense voltage when the voltage converter is set to allow the sense current to flow to the current sense circuit.