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:
May. 03, 2016
Filed:
Aug. 08, 2013
Applicant:
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 41/08 (2006.01); H02N 2/00 (2006.01); H01L 41/04 (2006.01);
U.S. Cl.
CPC ...
H02N 2/008 (2013.01); H01L 41/042 (2013.01);
Abstract
A piezoelectric driving circuit and a driving method thereof are provided. The piezoelectric driving circuit drives a piezoelectric circuit by using a first driving switch connected to one end of a piezoelectric circuit, a second driving switch corresponding to the first driving switch and connected to the other end of the piezoelectric circuit, and a sensing resistor for sensing a current flowing in the piezoelectric circuit. A fire angle and a duty cycle of an upper switch are adjusted such that a peak of a sense voltage generated in the sensing resistor at a timing at which the first driving switch is turned on, in a state in which the second driving switch is turned on.