公开(公告)号：US20250112545A1

公开(公告)日：2025-04-03

申请号：US18977362

申请日：2024-12-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jieun BAN ,  Junghyun Lee ,  Youngjae Park ,  Jehyung Cho ,  Teaho Lee

IPC: H02M1/42 ,  H02M1/00 ,  H02M1/32 ,  H02M3/155

Abstract: An electrical device includes a power factor correction circuit including a switch, a first voltage sensor, a second voltage sensor, a memory storing instructions, and at least one processor configured to obtain second input voltage information of the electrical device, based on first input voltage information and DC link voltage information, compare the second input voltage information with preset reference voltage information, determine, based on a comparison of the second input voltage information with the preset reference voltage information, whether an input voltage of the electrical device is at least one of a low voltage or a high voltage, set a protection level of the power factor correction circuit based on the input voltage, and control an operating cycle of the switch of the power factor correction circuit, based on the protection level of the power factor correction circuit.

公开(公告)号：US12088187B2

公开(公告)日：2024-09-10

申请号：US18155456

申请日：2023-01-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jehyung Cho ,  Ganghyun Kim ,  Dongjo Shin ,  Daesung Kang ,  Sungin Park ,  Hyojea Shin ,  Teaho Lee

IPC: H02M5/458 ,  H02M1/00 ,  H02M1/36 ,  H02M5/453 ,  H02M7/72 ,  H02P27/06

CPC classification number: H02M1/0045 ,  H02M1/36 ,  H02M7/72 ,  H02P27/06 ,  H02M5/453 ,  H02M5/458

Abstract: A power supply device is provided. The power supply device includes a rectifier circuit for rectifying an inputted alternating current power supply, a capacitor circuit comprising a first and second capacitor which are connected in series, and smoothing the alternating current power supply rectified in the rectifier circuit, an inverter for converting the output power of the capacitor circuit to a preset power and outputting same, a switch for selectively connecting a middle node of the first capacitor and the second capacitor and an end of the alternating current power, a sensor for detecting a size of the alternating current power, and a controller which confirms a power mode of the alternating current power on the basis of an output value of the sensor, and which controls the switch so that the capacitor circuit multiplies and amplifies the selectively rectified alternating current power based on the confirmed power mode.

公开(公告)号：US11984884B2

公开(公告)日：2024-05-14

申请号：US18155439

申请日：2023-01-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jehyung Cho ,  Teaho Lee ,  Daesung Kang ,  Dongjo Shin ,  Cheolhun Cho

IPC: H03K17/18 ,  G01R19/155 ,  H02M1/00 ,  H02J9/00

CPC classification number: H03K17/18 ,  G01R19/155 ,  H02M1/0003 ,  H02J9/005

Abstract: A power supply device is provided. The power supply device includes a first switch element for selectively providing an alternating current (AC) power source to an actuation device, a second switch element for selectively providing the AC power source to the first switch element, a detection circuit for confirming whether or not the first switch element is in a full turn-on state, by comparing an input power source and an output power source of the first switch element, a sensor for sensing the size of the AC power source, and a controller for selectively controlling the operation of the second switch element on the basis of the sensed size of the AC power source and the confirmed full turn-on state.