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. 01, 2005
Filed:
Feb. 13, 2004
Hui Chiang Yang, Hsintien, TW;
Hui Chiang Yang, Hsintien, TW;
Niko Semiconductor Co., Ltd., Taipei, TW;
Abstract
A synchronous rectifier with dead time adjusting function is used in fly-back power supplies for adjusting dead time of switches. The synchronous rectifier has a rectifying circuit connected to a secondary side terminal of a transformer and outputting a positive half-cycle voltage, a charging circuit connected to the rectifying circuit for producing a first charging voltage and a second charging voltage, a regulated power circuit connected to the charging circuit and producing a reference voltage, a trigger circuit connected to the rectifying circuit and the charging circuit for generating a dead time adjusting comparing signal, a comparing circuit connected to the regulated circuit, the charging circuit and the trigger circuit for producing a dead time adjusting signal, and a logic circuit connected to the comparing circuit and the rectifying circuit for outputting a driving signal for controlling on/off states of a first electric switch.