公开(公告)号：US20200028435A1

公开(公告)日：2020-01-23

申请号：US16285390

申请日：2019-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dong-su KIM ,  Jong-beom Baek

IPC: H02M3/158 ,  G05F1/575

Abstract: A switching regulator configured to generate an output voltage based on an input voltage is provided. The switching regulator includes: an inductor; and a capacitor circuit configured to generate the output voltage by charging an inductor current passing through the inductor from the input voltage, provide a first capacitance as a load capacitance based on the output voltage being a first level or a second level, and provide a second capacitance, which is less than the first capacitance, as the load capacitance based on the output voltage being between the first level to the second level.

公开(公告)号：US20200228003A1

公开(公告)日：2020-07-16

申请号：US16832245

申请日：2020-03-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong-beom BAEK ,  Dong-su KIM ,  Jun-suk BANG

IPC: H02M3/07

Abstract: A switching regulator configured to generate an output voltage from an input voltage, includes an inductor, an output capacitor configured to generate the output voltage based on a current passing through the inductor, a flying capacitor, and a plurality of switches. The plurality of switches are configured to operate in at least one of a buck-boost mode or a boost mode to, charge the flying capacitor to the input voltage in a first phase, and provide a boosted voltage from the flying capacitor to the inductor in a second phase, the boosted voltage being generated by charge pumping from the input voltage.

公开(公告)号：US20190334750A1

公开(公告)日：2019-10-31

申请号：US16233192

申请日：2018-12-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： TAKAHIRO NOMIYAMA ,  Dong-su KIM ,  Ji-seon PAEK

IPC: H04L27/26 ,  H03F1/02 ,  H03F3/19

Abstract: A symbol power tracking amplification system including: a modem to generate data and symbol tracking signals; a symbol tracking modulator including a control circuit, first and second voltage supply circuits and a switch circuit, the control circuit generates first and second voltage level control signals in response to the symbol tracking signal, the first voltage supply circuit generates a first output voltage in response to the first voltage level control signal, the second voltage supply circuit generates a second output voltage in response to the second voltage level control signal and the switch circuit outputs the first or second output voltages as a supply voltage in response to a switch control signal; an RF block to generate an RF signal based on the data signal from the modem; and a power amplifier to adjust a power level of the RF signal based on the supply voltage.

公开(公告)号：US20180152144A1

公开(公告)日：2018-05-31

申请号：US15690467

申请日：2017-08-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young-hwan Choo ,  Ji-seon Paek ,  Dong-su KIM

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19

CPC classification number: H03F1/0216 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/211 ,  H03F3/245 ,  H03F3/68 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/451 ,  H04B1/04 ,  H04B1/0483 ,  H04B1/1607

Abstract: A supply modulator for providing a first power supply voltage and a second power supply voltage to a first power amplifier and a second power amplifier, respectively, includes a first modulation circuit including a linear regulator and a switching regulator, the first modulation circuit being configured to generate a first modulation voltage in accordance with envelope tracking, and provide the first modulation voltage to the first power amplifier as the first power supply voltage; and a single inductor multiple output converter configured to generate a first output voltage and a second output voltage based on an input voltage having a fixed level, provide the first output voltage to the linear regulator of the first modulation circuit as a power supply voltage, and provide the second output voltage to the second power amplifier as the second power supply voltage.

公开(公告)号：US20180123516A1

公开(公告)日：2018-05-03

申请号：US15613705

申请日：2017-06-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dong-su KIM ,  Ji-seon PAEK

IPC: H03F1/02 ,  H03F3/24 ,  H03F3/189 ,  H04L27/04

CPC classification number: H03F1/02 ,  H03F1/0227 ,  H03F3/189 ,  H03F3/19 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/451 ,  H04L27/04

Abstract: A supply modulator includes: a voltage generator including output terminals respectively outputting voltages having different levels, and configured to select, in response to a selection control signal corresponding to an envelope signal, at least one of the voltages as a selection supply voltage and to generate the selection supply voltage by performing DC-DC conversion on a power supply voltage; and a switch unit configured to connect an output terminal through which the selection supply voltage is output to a power amplifier, in response to a connection control signal corresponding to the envelope signal.