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:
Nov. 03, 2020
Filed:
Dec. 18, 2019
Asian Power Devices Inc., Taoyuan, TW;
Ganghong Liu, Taoyuan, TW;
Wei Tang, Taoyuan, TW;
Asian Power Devices Inc., Taoyuan, TW;
Abstract
An active damping circuit of dead time oscillation includes a damping unit, a main switch, a voltage biased unit, an auxiliary switch, and a voltage determining unit. The main switch is coupled to the damping unit. The voltage biased unit is coupled to the damping unit and the main switch, and the voltage biased unit provides a drive voltage to the main switch. The auxiliary switch is coupled to the voltage biased unit. The voltage determining unit is coupled to the auxiliary switch, the voltage biased unit, and the damping unit, and the voltage determining unit provides a threshold voltage. When a voltage across two ends of a winding of a transformer is less than the threshold voltage, the auxiliary switch is turned off so that the drive voltage turns on the main switch and enable the damping unit to suppress the dead time oscillation.