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1.发明申请公开(公告)号：US20250070681A1
公开(公告)日：2025-02-27
申请号：US18809783
申请日：2024-08-20
Inventor： Pengbo YANG , Zhen ZHU , Xiaoru GAO , Shuai WU , Yanmei GUO
Abstract: A control device and method for a flyback converter, a flyback converter and a power supply system are disclosed. The device is configured to apply a tuning voltage or current to a connection node of a secondary winding and a synchronous rectifier within a predetermined period of time after the synchronous rectifier is turned off and before a power transistor switch is turned on. It is also configured to, after the tuning voltage or current is applied, transmit a request signal requesting the power transistor switch to be turned on to a primary controller. The primary controller then turns on the power transistor switch based on the received request signal.
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公开(公告)号：US20250070558A1
公开(公告)日：2025-02-27
申请号：US18743141
申请日：2024-06-14
Applicant: DELTA ELECTRONICS, INC.
Inventor： Chih-Ming WU , Chien-Yu LIN , Ying-Hsiu CHEN
Abstract: Power conversion system includes a DC/DC conversion circuit, an energy tank, a switch, and a controller. DC/DC conversion circuit is configured to convert a first DC power into a second DC power and provide second DC power to a dynamic load. Energy tank is coupled to DC/DC conversion circuit. Switch is coupled between energy tank and DC/DC conversion circuit. Controller is coupled to energy tank and switch, and is configured to detect a first voltage of first DC power and a second voltage of second DC power to determine a change of dynamic load. When controller detects that first voltage is lower than a first preset voltage or detects that second voltage is lower than a second preset voltage, controller conducts switch so that a third DC power stored in energy tank is provided to DC/DC conversion circuit to compensate one of first DC power and second DC power.
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公开(公告)号：US12237777B2
公开(公告)日：2025-02-25
申请号：US17348542
申请日：2021-06-15
Applicant: Texas Instruments Incorporated
Inventor： Isaac Cohen
Abstract: A voltage converter, including an input adapted to couple to a voltage source and a transformer including a primary coil and a secondary coil. Primary side circuitry, including a first switching circuit, is coupled to the primary coil. A second switching circuit is coupled between a first terminal and a second terminal of the secondary coil, and configured to selectively close to short circuit the first terminal to the second terminal.
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公开(公告)号：US12237776B2
公开(公告)日：2025-02-25
申请号：US17941030
申请日：2022-09-09
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: This application discloses a converter and a power adapter, to reduce an energy loss of the power adapter. The converter includes a direct current power supply, a main power transistor, an auxiliary power transistor, a first capacitor, a transformer, and a control circuit. The first capacitor and the transformer are connected in series to form a series circuit. The series circuit is connected to a first terminal and a second terminal of the auxiliary power transistor in parallel. The control circuit is configured to: when the main power transistor is in a cutoff state and a target voltage reaches a target valley voltage, control the main power transistor to be conducted. The target voltage is a voltage between the first terminal of the main power transistor and the ground.
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公开(公告)号：US12237775B2
公开(公告)日：2025-02-25
申请号：US18499864
申请日：2023-11-01
Applicant: Oki Electric Industry Co., Ltd.
Inventor： Tomoyuki Kojima , Taku Oryoji
Abstract: A power supply device according to an embodiment may include: a voltage generator configured to generate, from a commercial power supply, a first voltage and a second voltage lower than the first voltage; a voltage step-down part configured to decrease the first voltage to the second voltage; a bypass part configured to output the second voltage output from the voltage generator, with the voltage step-down part bypassed; and a controller configured, in a normal operation mode, to cause the voltage generator to generate and output the first voltage and to cause the voltage step-down part to operate and decrease the first voltage to the second voltage and output the second voltage, and configured, in a power-saving mode, to cause the voltage generator to generate the second voltage and output the second voltage through the bypass part without causing the voltage step-down part to operate.
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Patent Agency Ranking
公开(公告)号：US12237688B2
公开(公告)日：2025-02-25
申请号：US17993940
申请日：2022-11-24
Applicant: SPARQ SYSTEMS INC.
Inventor： Majid Pahlevaninezhad , Praveen Jain
Abstract: Systems and methods relating to the integration of energy storage subsystems into components for use with systems that harvest energy from PV panels and convert that energy for use with a power grid. Various configurations of converters that integrate energy storage cells and the inverters that use such converters are presented. Half-bridge and full bridge configurations for the converters are presented. The integrated energy storage cells may be battery cells, supercapacitor cells, or a combination of the two. Digital control systems for controlling the converters as well as the charge and discharge cycles for the energy storage cells are also presented.
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公开(公告)号：US20250062696A1
公开(公告)日：2025-02-20
申请号：US18644106
申请日：2024-04-24
Applicant: Leadtrend Technology Corp.
Inventor： Jun-Hao Huang , Tsung-Chien Wu , Chung-Wei Lin , Ming-Chang Tsou
Abstract: A secondary-side controller applied to a flyback power converter prevents a secondary side of the flyback power converter from conducting incorrectly. The secondary-side controller includes a first comparison circuit, a second comparison circuit, and a gate control signal generation circuit. The first comparison circuit generates a first comparison signal according to a drain voltage of a synchronous switch of the secondary side of the flyback power converter and a first parameter. The second comparison circuit generates a ready signal according to the first comparison signal and a resistance of an external resistor. The gate control signal generation circuit generates a gate control signal to the synchronous switch according the ready signal and the drain voltage, and the synchronous switch is turned on according to the gate control signal.
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公开(公告)号：US20250062683A1
公开(公告)日：2025-02-20
申请号：US18643893
申请日：2024-04-23
Applicant: FARADAY SEMI, INC.
Inventor： Parviz Parto
Abstract: A direct current to direct current (DC-DC) converter can include a chip embedded integrated circuit (IC), one or more switches, and an inductor. The IC can be embedded in a PCB. The IC can include driver, switches, and PWM controller. The IC and/or switches can include eGaN. The inductor can be stacked above the IC and/or switches, reducing an overall footprint. One or more capacitors can also be stacked above the IC and/or switches. Vias can couple the inductor and/or capacitors to the IC (e.g., to the switches). The DC-DC converter can offer better transient performance, have lower ripples, or use fewer capacitors. Parasitic effects that prevent efficient, higher switching speeds are reduced. The inductor size and overall footprint can be reduced. Multiple inductor arrangements can improve performance. Various feedback systems can be used, such as a ripple generator in a constant on or off time modulation circuit.
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公开(公告)号：US20250062296A1
公开(公告)日：2025-02-20
申请号：US18938311
申请日：2024-11-06
Applicant: Delta Electronics (Shanghai) Co.,Ltd.
Inventor： Pengkai JI , Shouyu HONG , Haoyi YE , Jianhong ZENG
IPC: H01L25/10 , H01L23/00 , H01L23/31 , H01L23/367 , H01L23/538 , H01L23/64 , H02M3/158 , H02M3/335
Abstract: A power supply system includes a system board, a load and a power module, the power module includes a first package and a second package provided on an upper side of the system board; and a bridge member provided on upper sides of the first package and the second package, wherein vertical projections of the first package and the second package on the system board are both overlapped with a vertical projection of the bridge member on the system board, wherein the first package and the load are configured to be provided on an upper surface of the system board, the second package is stacked on an upper side of the load, and the bridge member is stacked on upper sides of the first package and the second package.
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10.发明授权公开(公告)号：US12231063B2
公开(公告)日：2025-02-18
申请号：US18088963
申请日：2022-12-27
Inventor： Yukihiro Nishikawa , Masahito Shoyama , Koki Hebishima
Abstract: This power conversion device includes a control unit that controls a switching operation of a switching element of the inverter unit. The control unit is configured to switch between frequency modulation control and phase shift control, based on the output from the output converter unit, and execute. Then, the control unit is configured to, when switching between frequency modulation control and phase shift control, execute overlap control for executing the phase shift control while executing the frequency modulation control, in a predetermined switching operation range.
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