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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
发明人： Tsung-Liang Hung , Shao-Hsien Chiu
CPC分类号： H02M1/4241 , H02M1/0058 , H02M1/08 , H02M3/33515 , H02M7/06
摘要： 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
发明人： Tsung-Liang Hung
CPC分类号： H02M3/1586 , H02M1/0058 , H02M1/346
摘要： 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
发明人： Tsung-Liang Hung
摘要： 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
发明人： Yeu-Torng Yau , Tsung-Liang Hung
摘要： 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
发明人： Yeu-Torng Yau , Tsung-Liang Hung
摘要： 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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公开(公告)号：US11843319B2
公开(公告)日：2023-12-12
申请号：US17497916
申请日：2021-10-09
发明人： Tsung-Liang Hung
CPC分类号： H02M3/33576 , H02M1/0058
摘要： 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：US11750105B1
公开(公告)日：2023-09-05
申请号：US17836187
申请日：2022-06-09
发明人： Tsung-Liang Hung
CPC分类号： H02M3/33592 , H02M1/0045 , H02M3/33573
摘要： A full-bridge phase-shift converter with voltage clamping includes a transformer, a primary-side circuit, and a secondary-side circuit. The secondary-side circuit includes a first synchronous rectifying switch, a second synchronous rectifying switch, an output inductor, a plurality of diodes, a capacitor, an energy-releasing unit, and an output capacitor. The capacitor provides a clamping voltage. The energy-releasing unit is coupled to the capacitor in parallel, and converts the clamping voltage into an output voltage. The output capacitor is coupled to the energy-releasing unit in parallel, and provides the output voltage.
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公开(公告)号：US11588510B2
公开(公告)日：2023-02-21
申请号：US17125376
申请日：2020-12-17
发明人： Yeu-Torng Yau , Tsung-Liang Hung
摘要： A network communication power supply with digital signal isolation includes a transformer, a transformer drive circuit, a rectifier, and a modulation signal duty cycle detection circuit. The transformer has a primary side and a secondary side. The transformer drive circuit is coupled to the primary side, and receives a digital signal input. The transformer drive circuit converts the digital signal input into a drive signal with a duty cycle corresponding to a logic level of the digital signal input according to the logic level. The digital signal input includes a power content. The rectifier is coupled to the secondary side and converts the power content to provide a power source. The modulation signal duty cycle detection circuit is coupled to the rectifier and supplied power by the power source, and provides a digital signal output with a high or low level according to the duty cycle.
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公开(公告)号：US11532980B2
公开(公告)日：2022-12-20
申请号：US17027125
申请日：2020-09-21
发明人： Yeu-Torng Yau , Tsung-Liang Hung
摘要： A conversion apparatus with overload control includes a primary conversion circuit, a resonant conversion circuit, and a control unit. The control unit controls a voltage value of a DC power source outputted from the primary conversion circuit according to a current signal of an output current of the resonant conversion circuit. When the control unit realizes that the output current exceeds a rated current according to the current signal, the control unit steps up the voltage value of the DC power source.
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公开(公告)号：US11431248B2
公开(公告)日：2022-08-30
申请号：US17027052
申请日：2020-09-21
发明人： Yeu-Torng Yau , Tsung-Liang Hung
摘要： 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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