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公开(公告)号：US20220140741A1
公开(公告)日：2022-05-05
申请号：US17308188
申请日：2021-05-05
Inventor： JING-YUAN LIN , PIN-HSIEN LIU , Ju-Hsin Chen , HSUAN-YU YUEH
Abstract: An LLC resonant converter is provided, which includes an input power source, a full-bridge switch circuit, a resonant circuit, a transformer, a rectifier circuit, a load, and a control circuit. The control circuit includes a load detection circuit and a valley switching circuit. The load detection circuit detects a load state of the load. The valley switching circuit is configured to, in response to the load state being a light load state: correspondingly generate a first difference voltage; calculate a first switch on-time for a first switch and a fourth switch; generate switching signals that control the first switch and the fourth switch to be turned off, and detect voltage valleys of a second switch and a third switch; and generate the switching signals to control the second switch and the third switch to be turned on according to the calculated first switch on-time.
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公开(公告)号：US20240186893A1
公开(公告)日：2024-06-06
申请号：US18114323
申请日：2023-02-27
Inventor： JING-YUAN LIN , Yi-Feng Lin , Chuan-Ting Chen
Abstract: A boost converter is provided. A first terminal of a first inductor of the boost converter is connected to a positive terminal of an input power source. In the of the boost converter, a second terminal of the first inductor is connected to a first terminal of a resonant inductor, and a second terminal of the resonant inductor is connected to a first terminal of a main switch. A second terminal of the main switch is connected to a negative terminal of the input power source. In the of the boost converter, a first terminal of a clamp switch is connected to the second terminal of the resonant inductor, a second terminal of the clamp switch is connected to a first terminal of a first storage capacitor, and a second terminal of the first storage capacitor is connected to the first terminal of the first inductor.
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公开(公告)号：US20210126526A1
公开(公告)日：2021-04-29
申请号：US16896326
申请日：2020-06-09
Inventor： JING-YUAN LIN , RUEI-SHENG TSAI , ZHONG-HENG Li , PIN-HSIEN LIU , HUANG-JEN CHIU
IPC: H02M1/42 , H02M1/088 , H02M7/5395
Abstract: A totem-pole bridgeless power factor corrector and a power factor correction method are provided. The totem-pole bridgeless power factor corrector obtains a duty cycle of next state by a predictive valley-peak current control method, and uses an OR gate element to combine PWM signals generated by an average current control method and the predictive valley-peak current control method, thereby enabling a digital signal processor to update the duty cycle.
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Patent Agency Ranking
公开(公告)号：US20210152095A1
公开(公告)日：2021-05-20
申请号：US16808599
申请日：2020-03-04
Inventor： JING-YUAN LIN , SHIH-MIN LIN , HSUAN-YU YUEH
Abstract: A full bridge converter having a wide output voltage range includes an input power source, a full bridge switching circuit, a transformer, a first rectifying circuit, a second rectifying circuit, a first output circuit, a second output circuit, and a control circuit. The transformer includes a magnetic core, a primary side winding, a first secondary side winding, and a second secondary side winding. The first rectifying circuit includes a first AC switch, a second AC switch and a first freewheeling diode, and the second rectifying circuit includes a third AC switch, a fourth AC switch and a second freewheeling diode. The control circuit, according to a duty cycle, controls the first AC switch and the third AC switch to be turned on during a positive half cycle, and controls the second AC switch and the fourth AC switch to be turned on during a negative half cycle.
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5.发明公开公开(公告)号：US20230155511A1
公开(公告)日：2023-05-18
申请号：US17682042
申请日：2022-02-28
Inventor： JING-YUAN LIN , HSUAN-YU YUEH , Yi-Feng Lin , Che-Yu Chang
CPC classification number: H02M3/33569 , H02M1/0058
Abstract: A resonant converter having a pre-conduction mechanism for realizing a wide output voltage range is provided. The resonant converter includes a first circuit and a second circuit. The first circuit includes a plurality of primary-side switches. The plurality of primary-side switches includes a first high-side switch, a second high-side switch, a first low-side switch and a second low-side switch. The second circuit includes a plurality of secondary-side switches. The plurality of secondary-side switches includes a third high-side switch, a fourth high-side switch, a third low-side switch and a fourth low-side switch. When the second low-side switch and the first low-side switch are turned on and a current time reaches a preset on time, the fourth high-side switch and the third low-side switch are turned on.
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公开(公告)号：US20250167688A1
公开(公告)日：2025-05-22
申请号：US18420935
申请日：2024-01-24
Inventor： JING-YUAN LIN , Wei-Sheng Hsu , Yi-Feng Lin
Abstract: A resonant converter switching between different operational state modes is provided. The resonant converter includes a first transistor, a second transistor, a control circuit, a resonant circuit, a transformer and an output stage circuit. A first terminal of the first transistor and a second terminal of the second transistor are connected to positive and negative terminals of an input voltage source, respectively. A first terminal of the second transistor is connected to a second terminal of the first transistor. The resonant circuit is connected to the second terminal of the first transistor and the transformer. The transformer is connected to a load through the output stage circuit. The control circuit modulates frequencies or duty cycles of conduction time control signals that are outputted to the first and second transistors to different values for switching the resonant converter between the operational state modes.
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公开(公告)号：US20250141347A1
公开(公告)日：2025-05-01
申请号：US18395722
申请日：2023-12-25
Inventor： JING-YUAN LIN , Yan-Cheng Hou , Yi-Feng Lin
Abstract: A resonant converter having a switch on-time control mechanism is provided. The resonant converter includes a primary-side switch circuit, a primary-side resonant circuit, a secondary-side switch circuit, a secondary-side resonant circuit, a transformer and a control circuit. In the resonant converter, the control circuit controls on-times and switching frequencies of the primary-side switch circuit and the secondary-side switch circuit to extend time within which power is transmitted from an input power source, the primary-side switch circuit, the primary-side resonant circuit and the transformer to the secondary-side resonant circuit, and stored in the secondary-side resonant circuit. As a result, the secondary-side resonant circuit is able to supply more power to a load.
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公开(公告)号：US20210159795A1
公开(公告)日：2021-05-27
申请号：US16817735
申请日：2020-03-13
Inventor： JING-YUAN LIN , JUN-RU WANG , PIN-HSIEN LIU , HUANG-JEN CHIU
Abstract: A multi-level buck converter includes an input power source, an input capacitor, first to fourth switches, a clamp capacitor, an output inductor, a clamp switch, a clamp diode, an output capacitor, an output load, a current detection circuit, a voltage detection circuit and a control circuit. The current detection circuit detects whether an inductor current of the output inductor exceeds a predetermined current value, and if so, the output clamp signal controls the clamp switch to be turned on. The voltage detection circuit generates a duty cycle control signal according to an error between an output voltage and a target output voltage. The control circuit controls the first to the fourth switches to sequentially enter a first mode, a second mode, a third mode, and a fourth mode in a first part of a duty cycle.
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