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:
Nov. 21, 2017
Filed:
Nov. 29, 2016
Fuji Electric Co., Ltd., Kawasaki-shi, Kanagawa, JP;
Jun Yabuzaki, Taipei, TW;
FUJI ELECTRIC CO., LTD., Kawasaki-shi, Kanagawa, JP;
Abstract
An overcurrent protection control circuit detects a low set value of an output voltage from a drop in voltage at a VCC terminal below a reference voltage. The overcurrent protection control circuit switches an overcurrent limit value from a high reference voltage to a low reference voltage and switches a maximum limit value of a switching frequency from a high first maximum switching frequency to a low second maximum switching frequency. By doing so, an overcurrent limit value of a switching element and a maximum limit value of a switching frequency are set to low values and a rise in output current is suppressed.