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公开(公告)号：US12132408B2
公开(公告)日：2024-10-29
申请号：US17819353
申请日：2022-08-12
Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
Inventor： Yuliang Cao , Dong Dong
CPC classification number: H02M3/33584 , H02M1/088 , H02M3/01 , H02M3/33576 , H02M3/33592
Abstract: Power converters including electronic-embedded transformers for current sharing and load-independent voltage gain are described. In one example, a power converter system includes an input, an output, a power converter between the input and output, and a controller. The converter includes a first bridge, a second bridge, and an electronic-embedded transformer (EET) between the first and second bridge. The EET includes a capacitor and a capacitance coupling switch bridge. The controller generates switching control signals for the first and second bridges and phasing drive control signals for the capacitance coupling switch bridge in the EET. The controller applies a phase shift to the phasing drive control signals for the EET as compared to the switching control signals for the first and second bridges, so that the voltage across the capacitor in the EET cancels the leakage inductance of the transformer windings in the EET, at any switching frequency.
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公开(公告)号：US12132407B1
公开(公告)日：2024-10-29
申请号：US18735204
申请日：2024-06-06
Applicant: SOUTHEAST UNIVERSITY
Inventor： Qinsong Qian , Ziyan Zhou , Yufan Wang , Qiang Luo , Weifeng Sun , Longxing Shi
CPC classification number: H02M3/33573 , H02M1/0009 , H02M1/0054 , H02M1/088 , H02M3/01 , H02M3/33576
Abstract: An adaptive load optimization method for a resonant gate drive circuit is provided to optimize the switching loss, turn-on loss and gate drive loss under different MOSFET loads. A data table is pre-stored in a digital signal processor chip (DSP), and voltages and pre-charge times, corresponding to a low total loss, of the resonant gate driver obtained by actual tests in case of different load currents are recorded in the data table; and in actual application, after an analog-to-digital converter terminal (ADC) samples a load current, a load current, closest to the sampled load current, is read from the data table, and the digital signal processor chip (DSP) is enabled to perform table look-up to obtain an optimized voltage and pre-charge time of a gate drive circuit.
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公开(公告)号：US12126266B2
公开(公告)日：2024-10-22
申请号：US17793594
申请日：2021-01-07
Applicant: Forsee Power
Inventor： Benoît Peron , Arnaud Bruder
CPC classification number: H02M3/33573 , H02M1/0058 , H02M1/083 , H02M3/01 , H02M3/33576
Abstract: A method for converting an input voltage (Vin) of a converter (1) into an output voltage (Vout), the circuit comprising a first bridge arm consisting of two switches (A) and (B), a second bridge arm consisting of two switches (C) and (D), connected in parallel, a primary coil coupled to a secondary coil, and connected by a center point pole (PAB) of the first bridge arm, and by another center point pole (PCD) of the second bridge arm; the circuit further comprising a capacitor in parallel between the respective terminals of each of the switches (A, B, C, D); a third bridge arm formed by two switches (E) and (F), connected in series; each of the switches (A, B, C, D, E, F) being associated with a diode at the terminals of said switch; an injection inductance (Linj) connected to the center point (PAB) of the first bridge arm, and to the center point (PEF) of the third bridge arm; a monitoring-control unit configured to control the switches to turn them ON or OFF, according to a control cycle configured to ensure soft switching between ON and OFF.
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公开(公告)号：US20240339920A1
公开(公告)日：2024-10-10
申请号：US18624817
申请日：2024-04-02
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Hong Liu , Baihui Song , Wen Zhang
CPC classification number: H02M1/007 , H02M1/0043 , H02M1/14 , H02M3/33576 , H02M7/217
Abstract: A two-stage converter and a control method thereof are provided. The two-stage converter includes a first stage conversion unit, a capacitor unit and a second stage conversion unit. The first stage conversion unit receives a first power and converts the first power into a second power. The capacitor unit is electrically connected to the first stage conversion unit to receive the second power. The second stage conversion unit is electrically connected to the capacitor unit to receive a power transmitted by the capacitor unit. The first stage conversion unit receives a switch signal which has a switching cycle. In at least one said switching cycle, the two-stage converter performs a first control mode in which an operation state of the second stage conversion unit is adjusted according to an operation state of the first stage conversion unit.
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公开(公告)号：US20240333122A1
公开(公告)日：2024-10-03
申请号：US18406391
申请日：2024-01-08
Applicant: MIX-DESIGN SEMICONDUCTOR TECHNOLOGIES LTD.
Inventor： Wanle LIU
CPC classification number: H02M1/0003 , H02M3/33576
Abstract: The present application discloses a switching power supply system with both analog and digital feedback, the steps for regulating an output voltage of the switching power supply system are as follows: indirectly obtaining the system output voltage on a primary side of the switch power supply, and regulating the output voltage for a first time by controlling a primary switch tuber; directly obtaining an actual output voltage of the system on a secondary side of the switching power supply, obtaining a voltage difference between the actual output voltage of the system and a load demand voltage, and regulating the output voltage secondary according to the voltage difference.
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Patent Agency Ranking
公开(公告)号：US12101033B2
公开(公告)日：2024-09-24
申请号：US17853479
申请日：2022-06-29
Applicant: Huawei Digital Power Technologies Co., Ltd.
CPC classification number: H02M3/33571 , H02M1/0058 , H02M3/01 , H02M3/33569 , H02M3/33576
Abstract: This application provides a switching conversion circuit, including: a power module, supplying power to a switching conversion module and an integrated circuit (IC) controller; and the switching conversion module is an asymmetrical half-bridge flyback structure and includes at least a first switching transistor, a second switching transistor, a first capacitor, and a transformer. The transformer includes a first secondary-side winding and a second secondary-side winding, and the first secondary-side winding of the transformer is coupled to a load. The IC controller turns on the first switching transistor or the second switching transistor based on a value of a first voltage, so that the switching conversion module enters an operating state to supply power to the load; and turns off the first switching transistor and the second switching transistor based on a value of a second voltage, so that the switching conversion module stops supplying power to the load.
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公开(公告)号：US20240291390A1
公开(公告)日：2024-08-29
申请号：US18572720
申请日：2022-06-15
Applicant: IKS Co., Ltd.
Inventor： Yuichi KADO , Takashi IMAI , Takao GOTO
CPC classification number: H02M3/33576 , H02J3/36
Abstract: With a control apparatus for a three-terminal static DC transformer for drive-controlling the three-terminal static DC transformer, a computing unit is provided with first, second, and third self-excited single-phase inverters so that each of voltages at their AC sides is caused to become a rectangular wave of three levels which are a positive voltage, a null voltage, and a negative voltage, wherein the rectangular wave is caused to undergo time changes so that the rectangular wave of the positive voltage is repeated in a half-cycle by being folded at the null voltage; and the computing unit drives each of the first, second, and third self-excited single-phase inverters so that a product of a length of a section in which the AC-side voltage of each of the first, second, and third self-excited single-phase inverters is not zero, and a voltage between the first, second, and third DC terminals becomes equal.
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公开(公告)号：US20240286494A1
公开(公告)日：2024-08-29
申请号：US18571662
申请日：2022-06-28
Applicant: Lightyear IPCo B.V.
CPC classification number: B60L50/53 , H02M3/33573 , H02M3/33576 , B60L2210/10
Abstract: This invention pertains to a three-port isolated active bridge DC-DC power converter comprising a control unit, a first primary-side port, a second primary-side port, two primary-side switching elements, a blocking switch, a secondary-side port and two secondary-side switching elements. The control unit is configured to open and to close the blocking switch, for preventing and allowing power flow between a primary side and a secondary side of the power converter. The control unit is configured to control the two primary-side switching elements and the two secondary-side switching elements for converting power between the primary-side ports and the secondary-side port. This invention further pertains to a three-port isolated active bridge DC-DC power converter system, a multi-port isolated active bridge DC-DC power converter, a multi-port isolated active bridge DC-DC power converter system, a solar power assembly, and a vehicle.
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公开(公告)号：US20240283366A1
公开(公告)日：2024-08-22
申请号：US18311997
申请日：2023-05-04
Applicant: Acer Incorporated
Inventor： Tzu-Tseng CHAN
CPC classification number: H02M3/33576 , H02M1/0009 , H02M1/0019
Abstract: A power supply device with high output stability includes a bridge rectifier, a first capacitor, a boost inductor, a first voltage divider circuit, a power switch element, a first output stage circuit, a second voltage divider circuit, a switch circuit, a transformer, a resonant capacitor, a second output stage circuit, and a detection and control circuit. The detection and control circuit can appropriately control the switch circuit according to a first divided voltage from the first voltage divider circuit, a second divided voltage from the second voltage divider circuit, and an output voltage from the second output stage circuit.
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公开(公告)号：US20240280645A1
公开(公告)日：2024-08-22
申请号：US18333373
申请日：2023-06-12
Applicant: Cypress Semiconductor Corporation
Inventor： Arun KHAMESRA , Hariom Rai , Pulkit Shah
CPC classification number: G01R31/40 , H02H7/125 , H02M1/0006 , H02M1/088 , H02M3/33576
Abstract: One or more computing devices, systems, and/or methods are provided. In an example of the techniques presented herein, a method of operating a Universal Serial Bus Power Delivery (USB-PD) power converter is provided. The method includes generating a pulse width modulated (PWM) signal for controlling the power converter. An output current signal for the power converter is determined. The output current signal corresponds to an output current across an external sense resistor coupled in an output path of the USB-PD power converter. A fault condition is identified based on the PWM signal and the output current signal. Operation of the power converter is disabled responsive to identifying the fault condition.
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