Patent ID: 9552005
Date: 2017-01-24
CPC Classifications: G05F,H02M,H05B,Y02B

Claim:
1. A controller for a power conversion circuit, the power conversion circuit including an inductor, a diode, and a switch, the controller comprising: a counter configured to determine, based on a first voltage input to the inductor, an on-time of the diode, wherein the on-time of the diode corresponds to an amount of time that the diode is conducting a first current to a load of the power conversion circuit; a current estimation circuit configured to estimate, based on the on-time of the diode and an on-time of the switch, an output current of the power conversion circuit, wherein the on-time of the switch corresponds to an amount of time that the switch is conducting a second current; and a pulse width modulator configured to provide, based on the estimated output current of the power conversion circuit, a gate drive signal to the switch, wherein the gate drive signal selectively transitions the switch between an on state and an off state.