公开(公告)号：US11362582B2

公开(公告)日：2022-06-14

申请号：US16938219

申请日：2020-07-24

Applicant: Emerson Climate Technologies, Inc.

Inventor： Charles E. Green ,  Paul Rancuret

IPC: H02M1/42 ,  H02M1/38 ,  H02P27/06 ,  H02M1/32 ,  H02M1/44 ,  H02M1/00

Abstract: A desired OFF period module is configured to determine a desired OFF period for a plurality of switches of a PFC circuit based on an input voltage and an output voltage. A blanking timer module is configured to output a blanking signal, set the blanking signal to a first state when a countdown timer is greater than zero, and set the blanking signal to a second state when the countdown timer reaches zero. A switching control module is configured to: transition a first switch of the plurality of switches from an ON state to an OFF state in response to (i) a measured current through an inductor of the PFC circuit being greater than a demanded current through the inductor and (ii) the blanking signal being in the second state; and maintain the first switch in the OFF state for the desired OFF period after the transition.