公开(公告)号：US20180109181A1

公开(公告)日：2018-04-19

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

CPC classification number: H02M3/07 ,  H02M1/32 ,  H02M2001/0045 ,  H03F1/0211 ,  H03F3/187 ,  H03F3/21 ,  H03F3/213 ,  H03F2200/03 ,  H03M1/66

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.