The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 2021
Filed:
Dec. 03, 2019
Alpha and Omega Semiconductor (Cayman) Limited, Grand Cayman, KY;
Chris M. Young, Round Rock, TX (US);
Alpha and Omega Semiconductor (Cayman) Limited, Grand Cayman, KY;
Abstract
Apparatus and associated methods relate to providing a power stage having an auxiliary power switch coupled to a high-side switch or a low-side switch in parallel and turning on the auxiliary power switch earlier than turning on the high-side switch. In an illustrative example, the auxiliary power switch may be connected with the high-side switch in parallel. The on-resistance of the auxiliary power switch may be greater than the on-resistance of the high-side switch. A gate drive engine may be configured to generate gate driving signals for the switches in the power stage such that the auxiliary power switch is turned on a predetermined time duration earlier than the high-side switch. Thus, the ringing at a switch node of the power stage may be advantageously reduced or eliminated.