Patent ID: 7994766

Claim:
A voltage converter device, comprising: a power switch; a control module comprising an output to provide a control signal to control the conductivity of the power switch; and a current sensor having an input configured to receive the control signal and an output configured to provide a feedback signal to the control module, the current sensor comprising: a first resistor comprising a first terminal and a second terminal; a first transistor comprising a first current electrode coupled to the second terminal of the first resistor, a second current electrode, and a control electrode configured to receive the control signal; a second resistor comprising a first terminal coupled to the first terminal of the first resistor and a second terminal; a second transistor comprising a first current electrode coupled to the second terminal of the second resistor, a second current electrode, and a control electrode configured to receive the control signal; and a transconductor comprising a first input coupled to the second terminal of the first resistor, a second input coupled to the second terminal of the second resistor, and an output configured to provide the feedback signal.