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公开(公告)号：US12088194B2
公开(公告)日：2024-09-10
申请号：US17951481
申请日：2022-09-23
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang Hung , Shao-Hsien Chiu
CPC classification number: H02M1/4241 , H02M1/0058 , H02M1/08 , H02M3/33515 , H02M7/06
Abstract: A hybrid-mode power factor corrector includes a power factor correction circuit, a zero-crossing detection circuit, and a controller. The power factor correction circuit includes a power inductor and a power switch, and the zero-crossing detection circuit detects an inductor current. The controller controls the switching of the power switch by an operation frequency to control the power factor correction circuit converting an input voltage into an output voltage, and controls an input current drawn by the power factor correction circuit to follow the input voltage. The controller turns on the power switch to according to a switching time of the power switch when the power switch is switched to reach to the operation frequency and the inductor current is as low as a threshold value close to zero.
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公开(公告)号：US11863075B2
公开(公告)日：2024-01-02
申请号：US17573124
申请日：2022-01-11
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang Hung
CPC classification number: H02M3/1586 , H02M1/0058 , H02M1/346
Abstract: A multi-phase boost converting apparatus includes a multi-phase boost converter and a passive lossless snubber, wherein the passive lossless snubber includes a first resonant capacitor, a second resonant capacitor, an output-end first unidirectional conduction component, an output-end second unidirectional conduction component, an input-end first unidirectional conduction component, an input-end second unidirectional conduction component and a resonant inductor.
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公开(公告)号：US11552562B1
公开(公告)日：2023-01-10
申请号：US17497913
申请日：2021-10-09
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang Hung
Abstract: A boost converting apparatus includes a boost converter and a passive lossless snubber, wherein the passive lossless snubber includes an input-end unidirectional conduction component, a resonant inductor, a resonant capacitor, and an output-end unidirectional conduction component. The present disclosure can solve the problems that the energy conversion efficiency of the hard-switching boost converter is poor and the structure of the soft-switching boost converter is complicated.
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公开(公告)号：US11056970B1
公开(公告)日：2021-07-06
申请号：US16821681
申请日：2020-03-17
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng Yau , Tsung-Liang Hung
Abstract: A bridgeless step-up and step-down AC-to-DC converter is used to convert an AC input power source into a DC output power source. The converter includes a first circuit, a second circuit, a third circuit, a third diode, and a fourth diode. The first circuit has a first end, a second send, and a third end; the first end is coupled to the AC input power source, the second end is coupled to a ground end, and the third end is coupled to the DC output power source. The second circuit has a first end, a second end, and a third end; the first end is coupled to the AC input power source, the second end is coupled to the ground end, and the third end is coupled to the DC output power source.
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公开(公告)号：US10886907B1
公开(公告)日：2021-01-05
申请号：US16717371
申请日：2019-12-17
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng Yau , Tsung-Liang Hung
Abstract: A method of controlling a resolution of digital pulse width modulation is applied to a digital pulse width modulation generator. The method is to divide a value of a first duty clock by a value of a first pulse width modulation period clock to generate a first resolution. And then, if it is confirmed that a modulation command has been received, a second resolution is generated, and if it is confirmed that the modulation command is not received, a third resolution is generated. The second resolution is greater than the first resolution, and the second resolution is less than the third resolution.
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Patent Agency Ranking
公开(公告)号：US11018593B1
公开(公告)日：2021-05-25
申请号：US16718680
申请日：2019-12-18
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng Yau , Tsung-Liang Hung
Abstract: A dual-mode active clamp flyback converter includes a transformer circuit, a clamping energy storage circuit, and a main switch circuit. The transformer circuit is coupled to a load, and the transformer circuit includes an auxiliary winding. The clamping energy storage circuit is coupled to the transformer circuit. If the load as a heavy loading, the clamping energy storage circuit is turned on. If the load as a light loading, the clamping energy storage circuit is turned off. The main switch circuit is coupled to the transformer circuit. When the main switch circuit is turned on, the auxiliary winding releases energy to a primary-side winding of the transformer circuit.
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公开(公告)号：US10306717B1
公开(公告)日：2019-05-28
申请号：US16038721
申请日：2018-07-18
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng Yau , Tsung-Liang Hung
Abstract: A flicker-free LED driving apparatus and voltage regulating method thereof are disclosed. The apparatus includes a power conversion circuit receiving an AC electricity and then generating an output voltage with a ripple component for an LED string; a feedback circuit electrically connected to the power conversion circuit and generating a feedback signal with varying duty cycle according to operation states of the LED string; a power conversion circuit including, a controller receiving the feedback signal turns on or off a switching device thereof according to the feedback signal; and a linear voltage-regulating circuit electrically connected to the power conversion circuit, the feedback circuit, and the LED string. and configured to regulate the output voltage in accordance with a voltage difference between the output voltage and a voltage across the LED string.
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公开(公告)号：US10271401B1
公开(公告)日：2019-04-23
申请号：US16025948
申请日：2018-07-02
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang Hung , Yeu-Torng Yau
Abstract: An electronic device is provided. The electronic device integrates an enable function and an over-temperature protection function (OTP) on the same line, thereby reducing the PCB layout between a microcontroller and a mainboard circuit, and further reducing the circuit complexity and cost. In addition, the negative temperature coefficient (NTC) thermistor in the electronic device is also directly coupled to a circuit pin used for the enable function of the microcontroller to serve as an over-temperature protection application. Therefore, even if the microcontroller fails, the electronic device may still use the hardware circuit structure to automatically achieve the over-temperature protection function.
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9.发明授权公开(公告)号：US09407136B2
公开(公告)日：2016-08-02
申请号：US14747797
申请日：2015-06-23
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang Hung , Yeu-Torng Yau
CPC classification number: H02M1/4225 , H02M1/34 , H02M1/42 , H02M1/4208 , H02M3/156 , H02M2001/0058 , H02M2001/346 , Y02B70/126 , Y02B70/1491 , Y02P80/112
Abstract: A passive coupled-inductor soft-switching circuit of a power factor corrector is provided. The passive coupled-inductor soft-switching circuit includes a power input terminal, a first inductor, a first diode, a power output terminal, a power switch and a buffer circuit. The first inductor has a first terminal and a second terminal, wherein the first terminal of the first inductor is electrically coupled with the power input terminal. The first diode has a positive terminal and a negative terminal, wherein the positive terminal of the first diode is electrically coupled with the second terminal of the first inductor. The power output terminal is electrically coupled with the negative terminal of the first diode. The buffer circuit is electrically coupled with the power switch. By using the buffer circuit, the voltage and current have phase interlacing shifts and thereby reducing the switching loss.
Abstract translation: 提供功率因数校正器的无源耦合电感软开关电路。 无源耦合电感软开关电路包括电源输入端，第一电感，第一二极管，功率输出端，电源开关和缓冲电路。 第一电感器具有第一端子和第二端子，其中第一电感器的第一端子与电力输入端子电耦合。 第一二极管具有正极端子和负极端子，其中第一二极管的正极端子与第一电感器的第二端子电耦合。 电源输出端子与第一二极管的负极端子电连接。 缓冲电路与电源开关电耦合。 通过使用缓冲电路，电压和电流具有相位交错位移，从而降低开关损耗。
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公开(公告)号：US09246380B2
公开(公告)日：2016-01-26
申请号：US14331554
申请日：2014-07-15
Applicant: ASIAN POWER DEVICES INC.
Inventor： Chih-Lung Yang , Tsung-Liang Hung
CPC classification number: H02M1/4225 , H02M2001/0012 , H02M2001/0032 , H02M2001/0054 , Y02B70/126 , Y02B70/1491 , Y02B70/16 , Y02P80/112
Abstract: A control circuit module for a power factor corrector is provided to convert the operation mode of the inductor current from the boundary conduction mode (BCM) to the discontinuous conduction mode (DCM) when a transistor element is operated under the valley inductor current, thus reducing the switching frequency and increasing system efficiency, also to maintain the operation mode of the inductor current in the BCM when the transistor element is operated under the peak inductor current, thus maintaining system efficiency.
Abstract translation: 提供了一种用于功率因数校正器的控制电路模块，用于当晶体管元件在谷值电感电流下工作时，将电感电流从边界导通模式（BCM）的工作模式转换为不连续导通模式（DCM），从而减小 开关频率和提高系统效率，同时在晶体管元件工作在峰值电感电流下时，保持BCM中电感电流的工作模式，从而保持系统效率。
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