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:
Apr. 21, 2026
Filed:
Nov. 27, 2024
Powerx Semiconductor Corporation, Hsinchu County, TW;
Sheng-An Ko, Hsinchu County, TW;
Bo-Zhou Ke, Hsinchu County, TW;
PowerX Semiconductor Corporation, Hsinchu County, TW;
Abstract
The application provides a power stage circuit, a bootstrap circuit and a driving method. The power stage circuit includes a switch circuit, a driving circuit and the bootstrap circuit. The switch circuit includes a low-side switch and a high-side switch coupled to a switching node. The driving circuit is configured to drive the low-side switch and the high-side switch to be alternatively turned on. The bootstrap circuit is coupled to the switch circuit and the driving circuit, and includes a bootstrap capacitor. The bootstrap capacitor is coupled to the switching node and a bootstrap node. During a period when both the low-side switch and the high-side switch are turned off, the bootstrap capacitor is charged when a voltage difference between its two terminals, which is decreased from a preset voltage value, reaches a preset limit voltage value, to maintain the voltage difference at the preset limit voltage value.