Invention Grant
- Patent Title: Performance enhancement of silicon-based device
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Application No.: US17266252Application Date: 2019-08-07
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Publication No.: US11502612B2Publication Date: 2022-11-15
- Inventor: Alan Wayne Brown , Philip Michael Johnson
- Applicant: HELLA GmbH & Co. KGaA
- Applicant Address: DE Lippstadt
- Assignee: HELLA GmbH & Co. KGaA
- Current Assignee: HELLA GmbH & Co. KGaA
- Current Assignee Address: DE Lippstadt
- Agency: Warner Norcross + Judd LLP
- International Application: PCT/IB2019/056726 WO 20190807
- International Announcement: WO2020/031111 WO 20200213
- Main IPC: H03K17/567
- IPC: H03K17/567 ; H02M3/335 ; H02M1/00 ; H02M1/08

Abstract:
A power converter is provided. The power converter includes two or more hybrid switching circuits electrically connected to a source or storage element. Each switching circuit includes a wide bandgap device that is parallel-connected to a silicon-based device. The converter further includes a controller that is operatively coupled to each device of the first and second switching circuits. The controller is configured to operate each hybrid switching circuit by (i) activating the silicon-based device for an activation period, (ii) activating the wide bandgap device for a predetermined duty cycle less than the activation period, (iii) deactivating the silicon-based device while the wide bandgap device is activated, and (iv) deactivating the wide bandgap device. The hybrid switching circuits are sequentially operated to convert an alternating current of a power supply into a link voltage for a power converter, for example.
Public/Granted literature
- US20210313872A1 PERFORMANCE ENHANCEMENT OF SILICON-BASED DEVICE Public/Granted day:2021-10-07
Information query
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