Patent ID: 9621029
Date: 2017-04-11
CPC Classifications: H02M,Y02B

Claim:
1. A device for controlling a power transistor of a power circuit, comprising: a driver circuit having a first input configured to receive a voltage reference signal, a second input configured to receive a subtraction signal, and an output configured to drive the power transistor based on the voltage reference signal and subtraction signal; a multiplier having a first input configured to receive a first signal based on a feedback signal from the power circuit, a second input configured to receive a second signal based on an input voltage to the power circuit, and an output configured to provide the voltage reference signal based on the first and second signals; and a subtraction circuit configured to provide the subtraction signal based on a difference between a third signal, based on the reference voltage signal, and a sensing signal representative of a current flowing through the power transistor.