公开(公告)号：US11190102B2

公开(公告)日：2021-11-30

申请号：US16582401

申请日：2019-09-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ikhwan Kim ,  Takahiro Nomiyama ,  Jiseon Paek ,  Jaeyeol Han

IPC: H02M3/158 ,  G05F1/565 ,  H02M1/00 ,  G05F1/575 ,  H02M3/157

Abstract: A regulating circuit including a first direct current (DC)-DC converter configured to apply a first supply voltage to a first node in a first mode and apply the first supply voltage to a second node in a second mode, a first low drop output (LDO) regulator connected to the first node, the first LDO regulator configured to provide an output voltage to an output node by regulating the first supply voltage of the first node, and a second LDO regulator connected to the first node, the second LDO regulator configured to provide an auxiliary current to the first node in the second mode may be provided.

公开(公告)号：US20210083635A1

公开(公告)日：2021-03-18

申请号：US16856159

申请日：2020-04-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongsu KIM ,  Junsuk Bang ,  Jiseon Paek ,  Youngho Jung

IPC: H03F3/24 ,  H03F3/195 ,  H03F3/21 ,  H04B1/16 ,  H04B1/04

Abstract: A communication circuit, including a first supply modulator configured to provide a first supply voltage; a first power amplifier configured to generate a first output signal by amplifying a first input signal corresponding to a first operation frequency band, a second power amplifier configured to generate a second output signal by amplifying a second input signal corresponding to a second operation frequency band; and a switching circuit configured to selectively provide the first supply voltage from the first supply modulator to the second power amplifier based on a first switching signal according to an operation node.