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:
Aug. 29, 2017
Filed:
Dec. 15, 2015
Rohm Co., Ltd., Kyoto, JP;
Yosuke Fukumoto, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A switching power source apparatus includes: a switching output circuit that generates an output voltage from an input voltage; an error amplifier that generates an error voltage in accordance with a difference between a predetermined reference voltage and the output voltage or a feedback voltage corresponding to the output voltage; a clock signal generation circuit that generates a clock signal; a slope voltage generation circuit that receives the clock signal to generate a slope voltage; a delay circuit that delays the clock signal to generate an on-signal; a PWM comparator that compares the error voltage and the slope voltage with each other to generate an off-signal; a logic circuit that receives the on-signal and off-signal to generate a pulse width modulation signal; and a switch drive circuit that receives the pulse width modulation signal to generate a drive signal for the switching output circuit.