Stable switching for a power factor correction boost converter using an input voltage and an output voltage

Abstract

Stable switching is disclosed for a power factor correction boost converter using an input voltage and an output voltage. In one example, a boost converter control system includes a gate driver coupled to a switch of a boost converter to generate a drive signal to control switching of the switch, wherein a period of the drive signal is adjusted using a current adjustment signal. A current control loop is coupled to the gate driver to receive a sensed input current from the boost converter and a desired input current and to generate the current adjustment signal to the gate driver. A current limiter is coupled to the gate driver and the current control loop to determine a duty cycle of the switch, to determine a maximum input current in response to the duty cycle, and to restrict the desired input current to below the maximum input current.

Dependencies are inferred from the claim text.