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. 22, 2016
Filed:
Dec. 17, 2014
Applicant:
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Inventors:
Assignee:
SEIKO INSTRUMENTS INC., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/40 (2006.01); H02M 3/156 (2006.01); H02M 1/00 (2007.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01); H02M 2001/0025 (2013.01);
Abstract
A switching regulator is provided which can prevent overshooting in an output voltage even when a source voltage is returned to a normal voltage from a voltage lower than a desired output voltage of the switching regulator. The switching regulator includes a 100% duty detector circuit that detects that a PWM comparator is in a 100%-duty state and a discharge accelerator circuit that detects that the output of an error amplifier discharges the voltage of a phase compensating capacitor and that accelerates the discharge, and activates the discharge accelerator circuit when the 100% duty detector circuit detects the 100%-duty state.