Patents by Inventor Fada DU
Fada DU 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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Patent number: 11923778Abstract: The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler.Type: GrantFiled: February 10, 2021Date of Patent: March 5, 2024Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.Inventors: Yanbo Zou, Fada Du, Chao Tang, Wenjie Lin
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Patent number: 11916489Abstract: The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler.Type: GrantFiled: July 14, 2021Date of Patent: February 27, 2024Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.Inventors: Yanbo Zou, Fada Du, Chao Tang, Wenjie Lin
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Patent number: 11916490Abstract: The present invention provides a multi-functional printed circuit board (PCB) for assembling a plurality of components of a power converter in to a single package. The PCB comprises: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the plurality of components of the power converter.Type: GrantFiled: July 14, 2021Date of Patent: February 27, 2024Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.Inventors: Yanbo Zou, Fada Du, Chao Tang, Wenjie Lin
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Patent number: 11916005Abstract: The present invention provides a multi-functional printed circuit board (PCB) for assembling a plurality of components of a power converter in to a single package. The PCB comprises: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the plurality of components of the power converter.Type: GrantFiled: July 14, 2021Date of Patent: February 27, 2024Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.Inventors: Yanbo Zou, Fada Du, Chao Tang, Wenjie Lin
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Patent number: 11916488Abstract: The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler.Type: GrantFiled: July 14, 2021Date of Patent: February 27, 2024Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.Inventors: Yanbo Zou, Fada Du, Chao Tang, Wenjie Lin
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Patent number: 11831243Abstract: The subject application provides a power converter with lossless current sensing capability. The power converter comprises: a transformer, a primary switch for conducting or blocking a current flowing in a primary winding of the transformer, a controller configured to generate a first control signal through a first control node to control the primary switch; and a current sensing circuit configured for sensing a current flowing in the primary winding. The current sensing circuit comprises a current sensing switch that is configured to be normally open and has a gate length smaller than a gate length of the primary switch. A relatively simple current sensing circuit is achieved and the overall power efficiency is improved.Type: GrantFiled: April 12, 2021Date of Patent: November 28, 2023Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.Inventors: Yanbo Zou, Yulin Chen, Fada Du, Tao Zhang
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Publication number: 20230246553Abstract: A switched mode power supply is provided. The switched mode power supply includes an active clamped flyback converter with one or more GaN-based power semiconductor transistors and a planar transformer. The planar transformer includes a magnetic core and primary and secondary planar coil windings. The magnetic core includes a lower core and an upper core. The lower core has at least three projections including a central projection and two peripheral projections. The central projection is configured to accept the primary and the secondary planar coil windings which surround the central projection. The central projection has a stepped upper surface such that first and second gaps of different spacings are formed between the lower core and the upper core when the two peripheral projections contact the upper core.Type: ApplicationFiled: October 20, 2022Publication date: August 3, 2023Inventors: Yanbo ZOU, Fada DU, Chao TANG, Wenjie LIN
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Patent number: 11716081Abstract: The present disclosure provides a controller for controlling a GaN-based semiconductor device. The controller is configured to receive a current sensing signal VCS which is indicative of a drain-to-source current of the GaN-based semiconductor device and generate a control driving signal VDRV to the GaN-based semiconductor device such that a gate-to-source voltage VGS applied to the GaN-based semiconductor device for switching on the GaN-based semiconductor device is stabilized to a voltage value equal to a reference voltage Vref over an on-time duration. Impact of the change in the voltage drop across the current sensing resistor to the operation of the GaN-based semiconductor device is eliminated.Type: GrantFiled: April 16, 2021Date of Patent: August 1, 2023Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.Inventors: Yanbo Zou, Fada Du, Wenbin Xie, Chao Tang
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Publication number: 20230155513Abstract: The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler.Type: ApplicationFiled: February 10, 2021Publication date: May 18, 2023Inventors: Yanbo ZOU, Fada DU, Chao TANG, Wenjie LIN
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Publication number: 20230031789Abstract: The present disclosure provides a controller for controlling a GaN-based semiconductor device. The controller is configured to receive a current sensing signal VCS which is indicative of a drain-to-source current of the GaN-based semiconductor device and generate a control driving signal VDRV to the GaN-based semiconductor device such that a gate-to-source voltage VGS applied to the GaN-based semiconductor device for switching on the GaN-based semiconductor device is stabilized to a voltage value equal to a reference voltage Vref over an on-time duration. Impact of the change in the voltage drop across the current sensing resistor to the operation of the GaN-based semiconductor device is eliminated.Type: ApplicationFiled: April 16, 2021Publication date: February 2, 2023Inventors: Yanbo ZOU, Fada DU, Wenbin XIE, Chao TANG
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Publication number: 20220329165Abstract: The subject application provides a power converter with lossless current sensing capability. The power converter comprises: a transformer, a primary switch for conducting or blocking a current flowing in a primary winding of the transformer, a controller configured to generate a first control signal through a first control node to control the primary switch; and a current sensing circuit configured for sensing a current flowing in the primary winding. The current sensing circuit comprises a current sensing switch that is configured to be normally open and has a gate length smaller than a gate length of the primary switch. A relatively simple current sensing circuit is achieved and the overall power efficiency is improved.Type: ApplicationFiled: April 12, 2021Publication date: October 13, 2022Inventors: Yanbo ZOU, Yulin CHEN, Fada DU, Tao ZHANG
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Publication number: 20220256707Abstract: The present invention provides a multi-functional printed circuit board (PCB) for assembling a plurality of components of a power converter in to a single package. The PCB comprises: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the plurality of components of the power converter.Type: ApplicationFiled: July 14, 2021Publication date: August 11, 2022Inventors: Yanbo ZOU, Fada DU, Chao TANG, Wenjie LIN
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Publication number: 20220255447Abstract: The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler.Type: ApplicationFiled: July 14, 2021Publication date: August 11, 2022Inventors: Yanbo ZOU, Fada DU, Chao TANG, Wenjie LIN
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Publication number: 20220255446Abstract: The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler.Type: ApplicationFiled: July 14, 2021Publication date: August 11, 2022Inventors: Yanbo ZOU, Fada DU, Chao TANG, Wenjie LIN
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Publication number: 20220254885Abstract: The present invention provides a multi-functional printed circuit board (PCB) for assembling a plurality of components of a power converter in to a single package. The PCB comprises: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the plurality of components of the power converter.Type: ApplicationFiled: July 14, 2021Publication date: August 11, 2022Inventors: Yanbo ZOU, Fada DU, Chao TANG, Wenjie LIN
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Publication number: 20220256700Abstract: The present invention provides a multi-functional printed circuit board (PCB) for assembling a plurality of components of a power converter in to a single package. The PCB comprises: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the plurality of components of the power converter.Type: ApplicationFiled: July 14, 2021Publication date: August 11, 2022Inventors: Yanbo ZOU, Fada DU, Chao TANG, Wenjie LIN