公开(公告)号：US20240235221A9

公开(公告)日：2024-07-11

申请号：US18199732

申请日：2023-05-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daewoong CHO ,  Kyeseok YOON ,  Seunghoon KIM ,  Jeongdu YOO ,  Sungwoo LEE ,  Jungwook HEO

IPC: H02J7/00

CPC classification number: H02J7/00304 ,  H02J7/00714 ,  H02J7/007182

Abstract: A circuit includes: an overcurrent limiting (OCL) detector configured to detect whether a level of an inductor current reaches an OCL level and to generate an OCL detection voltage; a control loop circuit configured to generate a reset voltage by comparing a ramp voltage reflecting the level of the inductor current with an error voltage generated based on an operating condition that is out of a preset operating condition; an adaptive OCL controller configured to generate an OCL control current by counting a number of pulses of the OCL detection voltage and a number of pulses of the reset voltage; an oscillator configured to generate an oscillation voltage wherein a frequency of the oscillation voltage varies based on a magnitude of the overcurrent limit control current; and a switching transistor for switching the inductor current based on the oscillation voltage.

公开(公告)号：US20230059963A1

公开(公告)日：2023-02-23

申请号：US17891363

申请日：2022-08-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyeseok YOON ,  Hyebong KO ,  Jinwoo SO ,  Hyoungseok OH ,  Daewoong CHO ,  Jungwook HEO

IPC: H02M3/158 ,  H02M3/07

Abstract: A buck converter including: a first switching element connecting an input voltage node to a switching node; a second switching element connecting the switching node to a ground node; a low drop out (LDO) voltage regulator connected to the input voltage node; a pulse width modulation (PWM) controller configured to receive a mode signal indicating an operation mode and toggle, in response to the mode signal, a first control signal for turning on the first switching element or a second control signal for turning on the second switching element; a bootstrap charger configured to receive the mode signal and toggle, in response to the mode signal, a third control signal for turning on the second switching element; and a bootstrap capacitor connecting an output node of the LDO voltage regulator to the switching node.

公开(公告)号：US20240146178A1

公开(公告)日：2024-05-02

申请号：US18220964

申请日：2023-07-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungkyu CHO ,  Kyeseok YOON ,  Dongjoon KIM ,  Sungwoo LEE ,  Daewoong CHO ,  Jungwook HEO

IPC: H02M1/088 ,  H02M1/00 ,  H02M1/14 ,  H02M3/158

CPC classification number: H02M1/088 ,  H02M1/0025 ,  H02M1/0054 ,  H02M1/14 ,  H02M3/158 ,  H03K3/037

Abstract: A voltage converter, including a switch circuit configured to generate an output voltage by switching an input voltage and a ground voltage based on a driving control signal; an error voltage generator configured to generate an error voltage based on a comparison between the output voltage and a reference voltage; a duty signal generator configured to generate a duty signal having a constant pulse frequency or a modulated pulse frequency, based on a result of the comparing; and a driving controller configured to generate the driving control signal based on the duty signal.

公开(公告)号：US20240136833A1

公开(公告)日：2024-04-25

申请号：US18199732

申请日：2023-05-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daewoong CHO ,  Kyeseok YOON ,  Seunghoon KIM ,  Jeongdu YOO ,  Sungwoo LEE ,  Jungwook HEO

IPC: H02J7/00

CPC classification number: H02J7/00304 ,  H02J7/00714 ,  H02J7/007182

Abstract: A circuit includes: an overcurrent limiting (OCL) detector configured to detect whether a level of an inductor current reaches an OCL level and to generate an OCL detection voltage; a control loop circuit configured to generate a reset voltage by comparing a ramp voltage reflecting the level of the inductor current with an error voltage generated based on an operating condition that is out of a preset operating condition; an adaptive OCL controller configured to generate an OCL control current by counting a number of pulses of the OCL detection voltage and a number of pulses of the reset voltage; an oscillator configured to generate an oscillation voltage wherein a frequency of the oscillation voltage varies based on a magnitude of the overcurrent limit control current; and a switching transistor for switching the inductor current based on the oscillation voltage.

公开(公告)号：US20230231479A1

公开(公告)日：2023-07-20

申请号：US18153003

申请日：2023-01-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungwoo LEE ,  Hyebong KO ,  Hyoungseok OH ,  Kyeseok YOON ,  Daewoong CHO ,  Woonhyung HEO

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/1582 ,  H02M1/0009 ,  H02M1/083

Abstract: A charging integrated circuit (IC) includes a bidirectional switching converter and a controller. The bidirectional switching converter is configured to generate a first output voltage by bucking a first input voltage based on a first switching operation in a buck mode, generate a second output voltage by boosting a second input voltage based on a second switching operation in a boost mode, and generate the first output voltage or the second output voltage based on a third switching operation in a buck-boost mode. The controller is configured to control the second switching operation according to a valley current mode control (VCMC) in a continuous current section and control the second switching operation according to a voltage mode control (VMC) based on a fixed switching frequency in a discontinuous current section, in the boost mode.