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:
Sep. 13, 2011
Filed:
Sep. 03, 2008
Junji Nishida, Osaka, JP;
Junji Nishida, Osaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A switching regulator is disclosed that uses a non-linear amplifier and is capable of PWM control operation at high frequencies with a simple circuit configuration and without increasing current consumption. The switching regulator includes a switching unit, an inductor, a rectification unit, and a control circuit that controls the switching of the switching unit so that the output voltage of the switching regulator becomes a constant voltage. The control circuit uses a pulse signal to perform PWM control on the switching unit. The pulse signal is generated by amplifying an error voltage between the output voltage and a reference voltage at a gain variable in response to a voltage of a saw-tooth waveform signal.