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:
Dec. 05, 2017
Filed:
Oct. 20, 2016
Torex Semiconductor Ltd., Tokyo, JP;
Norimasa Hane, Tokyo, JP;
Torex Semiconductor Ltd., Tokyo, JP;
Abstract
A switching power supply circuit includes: an error amplifier for amplifying a deviation between a reference voltage and a feedback voltage; a comparator for comparing the reference voltage with an output voltage of the error amplifier, and outputting a predetermined set signal; an ON-time control circuit for defining a period during which a switching element is ON; a flip-flop circuit which is set by the set signal to bring the switching element into an ON- or OFF-state, and is reset by an output signal of the ON-time control circuit to bring the switching element into an OFF- or ON-state; a ripple voltage detection circuit for connecting an integration circuit in parallel to an inductance coil, thereby detecting a ripple voltage contained in the output voltage; and a capacitor connected between the output side of the error amplifier and a junction of a resistor and a capacitor of the integration circuit.