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:
Mar. 31, 2015
Filed:
Aug. 02, 2011
Guangchao Zhang, San Jose, CA (US);
Guangchao Zhang, San Jose, CA (US);
Power Integrations, Inc., San Jose, CA (US);
Abstract
A power supply includes a drive signal generator to generate a drive signal to control a switching of power switch. A feedback circuit is coupled to receive a feedback signal representative of the output to generate a control signal. An oscillator circuit is coupled to generate an oscillating signal in response to the control signal, from which the drive signal is generated in response. A frequency of the oscillating signal increases from a first frequency to a second frequency with respect to the control signal for a first range of control signal values, remains substantially equal to the second frequency for a second range of control signal values, and decreases from the second frequency to a third frequency with respect to the control signal for a third range of control signal values. The first range is less than the second range, which is less than the third range.