Invention Grant
- Patent Title: Fast active clamp for power converters
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Application No.: US17647220Application Date: 2022-01-06
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Publication No.: US11545973B2Publication Date: 2023-01-03
- Inventor: Ashish K. Sahoo , Brandon Pierquet
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder PC
- Main IPC: H03K17/687
- IPC: H03K17/687 ; H02M1/08 ; H03K19/20

Abstract:
A switching system can include a main switching device configured to switch a voltage, a gate driver having an output coupled to a drive terminal of the main switching device and configured to deliver a drive signal to the main switching device, and a clamp circuit. The clamp circuit can be coupled to the drive terminal of the main switching device. The clamp circuit can include a logic gate configured to drive a clamp switching device coupled to and configured to clamp a voltage at the drive terminal of the main switching device. A drive signal of the clamp switching device can be substantially complementary to the main switching device drive signal. The logic gate can provide at least a portion of a delay between switching transitions of the main switching device and switching transitions of the clamp switching device.
Public/Granted literature
- US20220131539A1 FAST ACTIVE CLAMP FOR POWER CONVERTERS Public/Granted day:2022-04-28
Information query
IPC分类: