Patents by Inventor Wei-Hsiang CHAO
Wei-Hsiang CHAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230326918Abstract: A package structure is provided. The package structure includes a leadframe, a GaN power device, and an electrostatic discharge protection component. The leadframe includes a gate pad, a source pad, and a drain pad, which are disposed on the leadframe. The GaN power device has a gate end. The GaN power device is disposed on the source pad of the leadframe. The electrostatic discharge protection component includes a first pad. The first pad is disposed on the electrostatic discharge protection component. The electrostatic discharge protection component is disposed on the source pad of the leadframe. The gate end of the GaN power device is electrically connected to the first pad of the electrostatic discharge protection component. The first pad of the electrostatic discharge protection component is electrically connected to the gate pad of the leadframe.Type: ApplicationFiled: April 12, 2022Publication date: October 12, 2023Inventors: Jen-Chih LI, Liang-Cheng WANG, Wei-Hsiang CHAO
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Patent number: 11309887Abstract: A conversion circuit includes a main device and a voltage control switching circuit. The voltage control switching circuit includes a first terminal configured to receive an original signal, a second terminal coupled to the control terminal of the main device and configured to transmit a driving signal to drive the main device, and a reference terminal coupled to the second terminal of the main device. A voltage level of the driving signal is generated by the voltage control switching circuit. The voltage control switching circuit further includes a first voltage-control switch. The first drain terminal of the voltage-control switch is coupled to the first terminal. The first source terminal of the voltage-control switch is coupled to the second terminal. The first gate terminal of the voltage-control switch is coupled to the reference terminal.Type: GrantFiled: June 20, 2020Date of Patent: April 19, 2022Assignee: DELTA ELECTRONICS, INC.Inventors: Wei-Hsiang Chao, Po-Chin Chuang
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Publication number: 20210105010Abstract: A circuit includes a resistor, a capacitor, a controller, and a voltage clamp unit. The resistor is coupled between a supply voltage and a first node. The capacitor is coupled between the supply voltage and the first node. The controller periodically couples the first node and a reference node to a control node to generate a control signal at the control node, wherein the range of the control signal is from a first voltage of the first node to the low voltage level of the reference node. The voltage clamp unit, which is coupled between the control node and the reference node, determines the first voltage.Type: ApplicationFiled: February 10, 2020Publication date: April 8, 2021Inventors: Wei-Hsiang CHAO, Tai-Kang SHING
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Publication number: 20200321960Abstract: A conversion circuit includes a main device and a voltage control switching circuit. The voltage control switching circuit includes a first terminal configured to receive an original signal, a second terminal coupled to the control terminal of the main device and configured to transmit a driving signal to drive the main device, and a reference terminal coupled to the second terminal of the main device. A voltage level of the driving signal is generated by the voltage control switching circuit. The voltage control switching circuit further includes a first voltage-control switch. The first drain terminal of the voltage-control switch is coupled to the first terminal. The first source terminal of the voltage-control switch is coupled to the second terminal. The first gate terminal of the voltage-control switch is coupled to the reference terminal.Type: ApplicationFiled: June 20, 2020Publication date: October 8, 2020Inventors: Wei-Hsiang CHAO, Po-Chin CHUANG
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Patent number: 10784770Abstract: A conversion circuit includes a main device, a voltage control switching circuit and a trigger circuit. The trigger circuit includes an output terminal and a sense terminal. The sense terminal is electrically connected to the control terminal of the main device. The voltage control switching circuit includes a first terminal, a second terminal and a control terminal. A first terminal is configured to receive an original signal. A second terminal is connected to a control terminal of the main device, and is configured to transmit a driving signal to drive the main device. A control terminal is connected to the main device and the output terminal. The driving signal has a first voltage level generated by the voltage control switching circuit in response to a voltage level at the control terminal of the voltage control switching circuit.Type: GrantFiled: November 14, 2019Date of Patent: September 22, 2020Assignee: DELTA ELECTRONICS, INC.Inventors: Wei-Hsiang Chao, Po-Chin Chuang
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Patent number: 10784795Abstract: A conversion circuit includes a main device, a voltage control circuit and a trigger circuit. An output terminal of the voltage control circuit is electrically connected to a control terminal of the main device. The voltage control circuit is configured to output a driving signal having a first voltage level to the main device. The trigger circuit comprises an output terminal and a sense terminal. The output terminal of the trigger circuit is electrically connected to the control terminal of the voltage control circuit, and the sense terminal of the trigger circuit is electrically connected to the control terminal of the main device.Type: GrantFiled: August 21, 2019Date of Patent: September 22, 2020Assignee: DELTA ELECTRONICS, INC.Inventors: Wei-Hsiang Chao, Po-Chin Chuang
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Patent number: 10784768Abstract: A conversion circuit includes a main device including a first terminal, a second terminal and a control terminal, and a voltage control switching circuit including a first terminal configured to receive an first driving signal, a second terminal coupled to the control terminal of the main device and configured to transmit a second driving signal to drive the main device, and a reference terminal coupled to the second terminal of the main device. A current passing through the voltage control switching device is controlled in response to a voltage level of the reference terminal.Type: GrantFiled: August 1, 2019Date of Patent: September 22, 2020Assignee: DELTA ELECTRONICS, INC.Inventors: Wei-Hsiang Chao, Po-Chin Chuang
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Patent number: 10734882Abstract: A conversion circuit includes a main device including a first terminal, a second terminal and a control terminal, and a voltage control switching circuit including a first terminal configured to receive an first driving signal, a second terminal coupled to the control terminal of the main device and configured to transmit a second driving signal to drive the main device, and a reference terminal coupled to the second terminal of the main device. A current passing through the voltage control switching device is controlled in response to a voltage level of the reference terminal.Type: GrantFiled: December 28, 2018Date of Patent: August 4, 2020Assignee: DELTA ELECTRONICS, INC.Inventors: Wei-Hsiang Chao, Po-Chin Chuang
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Publication number: 20200083795Abstract: A conversion circuit includes a main device, a voltage control switching circuit and a trigger circuit. The trigger circuit includes an output terminal and a sense terminal. The sense terminal is electrically connected to the control terminal of the main device. The voltage control switching circuit includes a first terminal, a second terminal and a control terminal. A first terminal is configured to receive an original signal. A second terminal is connected to a control terminal of the main device, and is configured to transmit a driving signal to drive the main device. A control terminal is connected to the main device and the output terminal. The driving signal has a first voltage level generated by the voltage control switching circuit in response to a voltage level at the control terminal of the voltage control switching circuit.Type: ApplicationFiled: November 14, 2019Publication date: March 12, 2020Inventors: Wei-Hsiang CHAO, Po-Chin CHUANG
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Publication number: 20190356211Abstract: A conversion circuit includes a main device including a first terminal, a second terminal and a control terminal, and a voltage control switching circuit including a first terminal configured to receive an first driving signal, a second terminal coupled to the control terminal of the main device and configured to transmit a second driving signal to drive the main device, and a reference terminal coupled to the second terminal of the main device. A current passing through the voltage control switching device is controlled in response to a voltage level of the reference terminal.Type: ApplicationFiled: August 1, 2019Publication date: November 21, 2019Inventors: Wei-Hsiang CHAO, Po-Chin CHUANG
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Publication number: 20190252964Abstract: A conversion circuit includes a main device including a first terminal, a second terminal and a control terminal, and a voltage control switching circuit including a first terminal configured to receive an first driving signal, a second terminal coupled to the control terminal of the main device and configured to transmit a second driving signal to drive the main device, and a reference terminal coupled to the second terminal of the main device. A current passing through the voltage control switching device is controlled in response to a voltage level of the reference terminal.Type: ApplicationFiled: December 28, 2018Publication date: August 15, 2019Inventors: Wei-Hsiang CHAO, Po-Chin CHUANG