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公开(公告)号：US20250167673A1
公开(公告)日：2025-05-22
申请号：US18540052
申请日：2023-12-14
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang HUNG
Abstract: A multi-input power system with an inrush current suppression function receives at least two input power sources, and includes at least two filter-rectification circuits, at least two boost PFC circuits, a current suppression circuit, and a DC-to-DC conversion circuit. Each filter-rectification circuit correspondingly receives the input power source, and converts the at least two input power sources into at least two rectified voltages. Each boost PFC circuit is correspondingly connected to the filter-rectification circuit, receives the rectified voltage, and performs a power factor correction to the rectified voltage to provide a conversion voltage. The current suppression circuit is connected to the at least two filter-rectification circuits and the at least two boost PFC circuits. The DC-to-DC is connected to the at least two boost PFC circuits and the current suppression circuit, receives the conversion voltage and converts the conversion voltage into an output voltage.
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公开(公告)号：US20240396432A1
公开(公告)日：2024-11-28
申请号：US18353952
申请日：2023-07-18
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang HUNG
Abstract: A common-mode noise cancellation circuit includes a capacitor and an inductor. The inductor has a three coupled winding, including a first coupled winding, a second coupled winding, and a third coupled winding. An input end of the first coupled winding and an input end of the second coupled winding are respectively coupled to two ends of an input power source. An input end of the third coupled winding is coupled to the input end of the second coupled winding, and an output end of the third coupled winding is coupled to the capacitor. An output end of the first coupled winding and an output end of the second coupled winding are respectively coupled to two input ends of a power conversion stage.
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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：US20230412069A1
公开(公告)日：2023-12-21
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 , H02M3/33515 , H02M1/0058 , H02M1/08 , 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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Patent Agency Ranking
公开(公告)号：US20230053791A1
公开(公告)日：2023-02-23
申请号：US17497916
申请日：2021-10-09
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang HUNG
Abstract: An LLC resonant converting apparatus determines to operate as a half-bridge LLC resonant converter or a full-bridge LLC resonant converter based on the magnitude of the input voltage. The present disclosure can solve the problem that the input voltage range of the LLC resonant converter is not wide enough.
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公开(公告)号：US20230009315A1
公开(公告)日：2023-01-12
申请号：US17476741
申请日：2021-09-16
Applicant: ASIAN POWER DEVICES INC.
Inventor： Tsung-Liang HUNG
IPC: H02M1/00
Abstract: A power supply used to convert an input voltage into an output voltage, and the power supply includes an input detection circuit, a conversion circuit, a detection circuit, and a controller. The input detection circuit provides a power good signal or a power fail signal according to the input voltage. The conversion circuit converts the input voltage into an output voltage, and the detection circuit detects the output voltage according to the power good signal to accordingly provide an output feedback signal with a first feedback value. The controller stabilizes a voltage level of the output voltage according to the first feedback value. The detection circuit self-adjusts a feedback condition according to the power fail signal, and correspondingly adjusts the output feedback signal to a second feedback value according to the feedback condition. The controller reduces the voltage level of the output voltage according to the second feedback value.
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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：US20220069571A1
公开(公告)日：2022-03-03
申请号：US17123666
申请日：2020-12-16
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng YAU , Tsung-Liang HUNG
Abstract: An activation circuit with surge suppression is coupled to an output capacitor of a conversion apparatus. The activation circuit includes a detection circuit, a control circuit, and a surge suppression switch. The detection circuit provides an input signal to the control circuit according to an AC voltage received by an input end of the conversion apparatus, and determines whether the AC voltage is in a zero-crossing range according to the input signal. When the AC voltage in the zero-crossing range, the control circuit controls the surge suppression switch to connect a current path between the output capacitor and a ground end so as to active the conversion apparatus.
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公开(公告)号：US20210384822A1
公开(公告)日：2021-12-09
申请号：US17027052
申请日：2020-09-21
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng YAU , Tsung-Liang HUNG
Abstract: A hysteresis voltage detection circuit includes a voltage stabilizing unit, a first power switch, a first voltage dividing resister, a second voltage dividing resister, a third voltage dividing resistor and a second power switch. The voltage stabilizing unit is coupled to an adjustable voltage source. When both the first power switch and the second power switch are turned on, the first voltage dividing resistor, the second voltage dividing resistor, and the third voltage dividing resistor divide the adjustable voltage source. When both the first power switch and the second power switch are turned off, the first voltage dividing resistor and the second voltage dividing resistor divide the adjustable voltage source.
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