公开(公告)号：US20240348050A1

公开(公告)日：2024-10-17

申请号：US18605593

申请日：2024-03-14

Applicant: AA Power Inc.

Inventor： Qun Lu

IPC: H02J3/12 ,  G06Q30/0283 ,  H02M1/42 ,  H02M3/158 ,  H02M3/335

CPC classification number: H02J3/12 ,  G06Q30/0283 ,  H02M1/4225 ,  H02M3/158 ,  H02M3/33573 ,  H02M3/33576

Abstract: A method includes generating a turbo mode operation instruction based on a plurality of operating conditions, based on the turbo mode operation instruction, adjusting a system limit of a power supply so as to provide excess power to a load coupled to the power supply, detecting at least one operating parameter to obtain a detected operating parameter, determining whether the detected operating parameter exceeds a predetermined threshold, and reducing the system limit of the power supply so that the detected operating parameter drops below the predetermined threshold.

公开(公告)号：US12119742B2

公开(公告)日：2024-10-15

申请号：US17690034

申请日：2022-03-09

Applicant: SANKEN ELECTRIC CO., LTD.

Inventor： Osamu Ohtake ,  Ryuichi Furukoshi

IPC: H02M1/42 ,  H02M3/335

CPC classification number: H02M1/4208 ,  H02M3/335

Abstract: An integrated circuit for digitally controlling a critical mode power factor correction (PFC) circuit according to one or more embodiments may include: an output voltage detector and a switching current detector; an A/D converter and a sample and hold circuit that perform analog-to-digital conversion of an output signal of the output voltage detector and the switching current detector; an arithmetic unit that performs calculation based on the output signal of the A/D converter and generates a pulse signal to turn on/off a switching device of the PFC circuit; a correction value calculator that calculates, based on a switching frequency of the PFC circuit, a correction value for linearly correcting the output signal of the A/D converter; and an adder that adds the correction value to the output signal of the A/D converter to correct the output signal of the A/D converter and inputs the corrected output signal to the arithmetic unit.

公开(公告)号：US12106891B2

公开(公告)日：2024-10-01

申请号：US17942788

申请日：2022-09-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moonyoung Kim ,  Jeongil Kang ,  Jaesung Lee

IPC: H01F38/14 ,  G09G3/20 ,  H01F27/24 ,  H01F27/34 ,  H02J50/10 ,  H02J50/90 ,  G09G3/32 ,  H02M1/42

CPC classification number: H01F38/14 ,  G09G3/2092 ,  H01F27/24 ,  H01F27/346 ,  H02J50/10 ,  H02J50/90 ,  G09G3/32 ,  H02M1/4208

Abstract: A display apparatus includes a body; a display provided in the body; a processor provided in the body and configured to control the display to display an image; and a power supply including an adapter configured to be detachable from the body, and a power assembly configured to receive power from the adapter in a non-contact manner and supply the power to at least one of the display and the processor.

公开(公告)号：US20240322674A1

公开(公告)日：2024-09-26

申请号：US18731957

申请日：2024-06-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyomin AHN ,  Youngjae PARK ,  Junghyun LEE ,  Taeho LEE ,  Jehyung CHO

IPC: H02M1/42 ,  H02M1/00 ,  H02M7/06

CPC classification number: H02M1/4291 ,  H02M1/0048 ,  H02M7/06

Abstract: A home appliance for controlling a harmonic magnitude includes a current sensor configured to detect an input current of a power source, and at least one processor, and the at least one processor is configured to obtain a harmonic component from the input current detected by the current sensor, determine a length of a non-conducting interval of a switch so that a magnitude of the obtained harmonic component is less than a predetermined harmonic reference value, and generate a current reference value corresponding to the determined length of the non-conducting interval.

公开(公告)号：US12081116B2

公开(公告)日：2024-09-03

申请号：US17877377

申请日：2022-07-29

Applicant: FUJI ELECTRIC CO., LTD.

Inventor： Ryuji Yamada ,  Ryuunosuke Araumi

IPC: H02M1/42 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M1/4225 ,  H02M1/0012 ,  H02M1/08

Abstract: A switching control circuit for a power supply circuit, including: a first command value output circuit outputting a first command value; a correction circuit correcting the first command value, to output a second command value; a first timer circuit measuring a first time period starting from a first timing at which a transistor of the power supply circuit is turned on; and a driving signal output circuit outputting a driving signal to turn on the transistor in response to an inductor current of the power supply circuit reaching a predetermined value and the first time period having elapsed since the first timing, and outputting the driving signal to turn off the transistor based on the second command value. The correction circuit causes an on time period of the transistor to increase, when the first time period has elapsed since the first timing, after the inductor current reaches the predetermined value.

公开(公告)号：US20240291381A1

公开(公告)日：2024-08-29

申请号：US18441243

申请日：2024-02-14

Applicant: AcLeap Power Inc.

Inventor： Qixue Yu ,  Kun Dou

IPC: H02M1/42 ,  H02M1/00

CPC classification number: H02M1/4208 ,  H02M1/0009

Abstract: In one embodiment, a driving circuit device for a totem pole power factor correction converter (PFC) includes: a controller configured to control an initial drive level of a switching tube of the converter; a current judgment circuit configured to determine whether the inductive current of the converter crosses zero or not; a selector configured to compare a power supply voltage of the converter with zero and select, based on a result of the comparison, one of an output level of the current judgment circuit and a preset logic level as an intermediate control level to be output; and an calculator configured to perform a logical operation on the intermediate control level and the initial drive level to generate a target drive level for driving the switching tube.

公开(公告)号：US12074512B2

公开(公告)日：2024-08-27

申请号：US17534765

申请日：2021-11-24

Applicant: Hamilton Sundstrand Corporation

Inventor： Gordon Elliott Winer

IPC: H02M1/42 ,  H02M7/04 ,  H03K3/037 ,  H03K5/24

CPC classification number: H02M1/4208 ,  H02M7/04 ,  H03K3/037 ,  H03K5/24

Abstract: Systems for power factor correction are provided. Aspects include a voltage source connected to a first node, wherein the voltage source is configured to provide a first voltage, a sense resistor connected between the first node and a second node, a load connected to the second node, a power factor correction capacitor connected in parallel with the load, and a controlled voltage source configured to provide a second voltage to the power factor correction capacitor based on a control signal, wherein the control signal is received from a power factor correction circuit configured to determine a time difference between a zero-crossing of a voltage signal and a zero-crossing of a current signal from the voltage source.

公开(公告)号：US12074470B2

公开(公告)日：2024-08-27

申请号：US17527868

申请日：2021-11-16

Applicant: Lear Corporation

Inventor： Rafael Jimenez Pino ,  Pablo Gaona Rosanes ,  Hector Sarnago Andia ,  Oscar Lucia Gil

IPC: H02M3/335 ,  B60L53/22 ,  H02J7/02 ,  H02M1/00 ,  H02M1/42

CPC classification number: H02J7/02 ,  B60L53/22 ,  H02M1/0009 ,  H02M1/4208 ,  H02M3/33584 ,  B60L2210/12 ,  B60L2210/14 ,  B60L2210/30 ,  H02J2207/20 ,  H02J2310/48

Abstract: In at least one embodiment, a vehicle battery charger is provided. The vehicle battery charger includes at least one transformer, a first modular converter, a filter, and at least one controller. The first modular converter includes a first plurality of switching devices to generate a first voltage signal in response to a filtered input signal. A second plurality of switching devices generate a second voltage signal. The filter is operably coupled to the first modular converter and provides the filtered input signal to the first modular converter in response to a first input signal from a mains supply. The filtered input signal includes a detectable current portion and an undetected current portion. The controller is programmed to determine the undetected current portion based at least on a capacitance of the filter and generate a first control variable to compensate for the undetected current portion.

公开(公告)号：US20240283363A1

公开(公告)日：2024-08-22

申请号：US18336731

申请日：2023-06-16

Applicant: Cypress Semiconductor Corporation

Inventor： Rashed AHMED ,  Harish SUBRAMANYA ,  Madhan Kumar KUPPASWAMY ,  Ganesh SUBRAMANIAM

IPC: H02M3/335 ,  H02M1/42

CPC classification number: H02M3/33515 ,  H02M1/4208

Abstract: Controlling power factor correction (PFC) in a flyback converter is described. In one embodiment, an apparatus includes a flyback converter configured to operate with a fixed switching frequency. The flyback converter includes a signal transformer, a primary side including a primary-side controller coupled to the signal transformer, and a secondary side including a secondary-side controller coupled to the signal transformer. The secondary-side controller is configured at least to cause a control signal to be generated based on a ramp voltage generated by a ramp voltage generator of the secondary-side controller. The control signal provides power factor correction (PFC) using the flyback converter.

公开(公告)号：US12062983B2

公开(公告)日：2024-08-13

申请号：US17521671

申请日：2021-11-08

Applicant: PACIFIC FAST CHARGE CORPORATION

Inventor： David Md Kim ,  Philip Edmund Schaefer ,  German Rafael Nielsen Lopez ,  Matthew Jordan Serrano

IPC: H02M3/158 ,  B60L53/22 ,  H02J7/00 ,  H02M1/14 ,  H02M7/217 ,  H02M7/219 ,  H02M7/23 ,  H02M7/797 ,  H02M7/81 ,  H02M1/42 ,  H02M7/00

CPC classification number: H02M3/1582 ,  B60L53/22 ,  H02J7/007 ,  H02M1/14 ,  H02M7/2173 ,  H02M7/219 ,  H02M7/23 ,  H02M7/797 ,  H02M7/81 ,  B60L2210/12 ,  B60L2210/14 ,  H02M1/4208 ,  H02M7/003

Abstract: The present invention generally relates to a modular high power bi-directional half bridge buck/boost converter assembly and, in particular, to a system for converting power from one form of current (either AC or DC) to a differing level of voltage, either lower (buck) or higher (boost), to output a wave signal based on pulse wave modulation (PWM) switching control by means of an external digital controller and methods of operation. In particular, an inverter-converter system includes at least one half bridge module including a plurality of circuit components, at least one inductor which is connected to the at least one half bridge module and a power supply, and a controller which is configured to receive and send instructions to the at least one half bridge module for converting an input voltage to an output voltage and dynamically tune switching frequencies based on a load of the inverter-converter system.