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. 18, 2017
Filed:
Jun. 30, 2015
Applicant:
Alpha and Omega Semiconductor (Cayman) Ltd., Sunnyvale, CA (US);
Inventors:
Assignee:
Alpha & Omega Semiconductor (Cayman), Ltd., Sunnyvale, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/36 (2007.01);
U.S. Cl.
CPC ...
H02M 3/33507 (2013.01); H02M 1/36 (2013.01);
Abstract
A control circuit and the control method for controlling the current voltage converter of a power conversion system in the start-up phase are disclosed. A first voltage is applied to the non-inverting input terminal of the comparator and a reference voltage is applied to the inverting input terminal of the comparator. When the first voltage exceeds the reference voltage, the comparison result from the comparator triggers the frequency of the clock signal generated by the oscillator to reduce preventing the primary current flowing through the primary winding of the transformer exceeding a pre-set value.