公开(公告)号：US10581322B2

公开(公告)日：2020-03-03

申请号：US15783506

申请日：2017-10-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Eric J. King ,  Aaron J. Brennan ,  Christian Larsen ,  John L. Melanson ,  Yongjie Cheng ,  Adrian Colli-Menchi

IPC: H02M3/07 ,  H03F1/02 ,  H03F3/213 ,  H02M1/32 ,  H03F3/187 ,  H02M1/00 ,  H03M1/66 ,  H03F3/21

Abstract: A system may include a charge pump configured to operate in a plurality of modes including a first mode in which the ratio of an output voltage to an input voltage of the charge pump is a first ratio and a second mode in which the ratio is a second ratio and a controller configured to limit current flowing between a power source of the charge pump to the charge pump, wherein the power source provides the input voltage, by limiting a transfer of charge between the power source and the charge pump during a switching cycle of the charge pump responsive to a change in operation between modes of the plurality of modes.