公开(公告)号：US20200014243A1

公开(公告)日：2020-01-09

申请号：US16458306

申请日：2019-07-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moonyoung KIM ,  Jeongil Kang ,  Shinwook Choi

IPC: H02J50/12 ,  H02J50/90 ,  H01F38/14 ,  H02M3/335 ,  H02M1/42 ,  H04N5/63

Abstract: An electronic apparatus including a power transfer module configured to wirelessly transfer power to a power receiver and a controller configured to control the power receiver to transfer power based on voltage applied from the power transfer module to the power receiver.

公开(公告)号：US11108272B2

公开(公告)日：2021-08-31

申请号：US16458306

申请日：2019-07-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moonyoung Kim ,  Jeongil Kang ,  Shinwook Choi

IPC: H02J7/00 ,  B60L11/18 ,  H02J50/12 ,  H02J50/90 ,  H01F38/14 ,  H02M1/42 ,  H04N5/63 ,  H02M3/335 ,  H02J7/02

Abstract: An electronic apparatus including a power transfer module configured to wirelessly transfer power to a power receiver and a controller configured to control the power receiver to transfer power based on voltage applied from the power transfer module to the power receiver.

公开(公告)号：US20210021207A1

公开(公告)日：2021-01-21

申请号：US16930634

申请日：2020-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Youngho CHOI ,  Youngsoo Kim ,  Youngnam Yoon ,  Sung-Bum Jung ,  Shinwook Choi

IPC: H02M7/219 ,  H02M7/217

Abstract: A power supply is provided. The power supply includes: a switching module including switching elements and is configured to receive rectified power; a transformer configured to transform first power received from the switching module; an outputter including first and second switching elements, and is configured to receive the transformed first power from the transformer and output an output voltage that follows a preset reference voltage; and a controller configured to control the switching module to operate in a full bridge mode or a half bridge module based on a peak voltage of the rectified power, adjust a switching frequency of the switching module based on the output voltage, control switching of the first and second switching elements based on the output voltage, and adjust a duty ratio of each of the first and second switching elements based on the rectified power.

公开(公告)号：US11563372B2

公开(公告)日：2023-01-24

申请号：US16973334

申请日：2019-07-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moonyoung Kim ,  Jeongil Kang ,  Shinwook Choi

IPC: H02M1/42 ,  H02M3/335 ,  H02M1/00

Abstract: An electronic apparatus includes: an operator; and a power circuit configured to supply power to the operator, wherein the power circuit includes a first voltage converter configured to output a first voltage based on input power, and a power factor corrector (PFC) configured to output a second voltage by performing power factor correction for the first voltage, and supplies power based on the first voltage or the second voltage to the operator, wherein the power circuit stops an operation of the PFC, lowers the first voltage to have a level corresponding to the second voltage, and supplies power based on the lowered first voltage to the operator, based on power consumption of the operator lower than or equal to a predetermined value.

公开(公告)号：US10826382B2

公开(公告)日：2020-11-03

申请号：US16456263

申请日：2019-06-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shinwook Choi ,  Jeongil Kang ,  Moonyoung Kim

IPC: H02M1/32 ,  H01R24/60 ,  H02M1/42 ,  H02M7/04 ,  H02M7/21

Abstract: Disclosed is an electronic apparatus including a connector configured to connect the electronic device to an external apparatus; and a power circuit configured to supply power to the connected external apparatus, the power circuit including: a transformer configured to output an output voltage by varying a level of an input voltage; a switching unit comprising a switch configured to perform switching operation for the transformer; a controller configured to control the switching unit to match a level of the output voltage with the external apparatus; and an auxiliary power circuit including an auxiliary winding, and configured to supply power to the controller based on a voltage induced in the auxiliary winding by the output voltage and to decrease the number of turns of the auxiliary winding based on the output voltage having a level greater than or equal to a predetermined value.

公开(公告)号：US11477867B2

公开(公告)日：2022-10-18

申请号：US17274349

申请日：2019-08-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moonyoung Kim ,  Jeongil Kang ,  Shinwook Choi

IPC: H05B45/325 ,  H05B45/14 ,  H05B45/34 ,  H05B45/3725 ,  H05B45/30

Abstract: Disclosed is an LED driving apparatus. The LED driving apparatus comprises an LED driving circuit, a power supply unit for supplying a driving voltage to the LED driving circuit, a voltage ripple controller located between the LED driving circuit and the power supply unit, and a switching unit for controlling a voltage supplied to the LED driving circuit by turning on or off the voltage ripple controller according to a duty ratio of a pulse width modulation (PWM) dimming signal.

公开(公告)号：US11341900B2

公开(公告)日：2022-05-24

申请号：US16770671

申请日：2019-03-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Shinwook Choi ,  Youngsoo Kim ,  Kangmoon Seo

IPC: G09G5/00 ,  G09G3/32 ,  H05B45/375 ,  H05B45/48

Abstract: Disclosed is a display device including a power transformer converting an input voltage into a specified voltage, a display driver including a rectifier rectifying a voltage converted through the power transformer and a converter converting a voltage rectified through the rectifier based on a control signal for outputting an image, and a display panel receiving a converted voltage through the display driver to display the image. The display driver may include a voltage drop unit dropping a voltage input through the rectifier. Other various embodiments as understood from the specification are also possible.

公开(公告)号：US11218082B2

公开(公告)日：2022-01-04

申请号：US16930634

申请日：2020-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Youngho Choi ,  Youngsoo Kim ,  Youngnam Yoon ,  Sung-Bum Jung ,  Shinwook Choi

IPC: H02M3/335 ,  H02M7/219 ,  H02M7/217 ,  H02M1/42 ,  H02M3/07

Abstract: A power supply is provided. The power supply includes: a switching module including switching elements and is configured to receive rectified power; a transformer configured to transform first power received from the switching module; an outputter including first and second switching elements, and is configured to receive the transformed first power from the transformer and output an output voltage that follows a preset reference voltage; and a controller configured to control the switching module to operate in a full bridge mode or a half bridge module based on a peak voltage of the rectified power, adjust a switching frequency of the switching module based on the output voltage, control switching of the first and second switching elements based on the output voltage, and adjust a duty ratio of each of the first and second switching elements based on the rectified power.