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. 07, 2017
Filed:
Mar. 24, 2016
Applicant:
Fairchild Semiconductor Corporation, San Jose, CA (US);
Inventors:
Weihong Qiu, San Ramon, CA (US);
Shangyang Xiao, Daly City, CA (US);
Assignee:
Fairchild Semiconductor Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01);
Abstract
A power supply system has a power switch circuit that switches an input voltage to generate a switched input voltage, an output circuit that generates an output voltage from the switched input voltage, and a pulse width modulation (PWM) controller that generates a PWM signal to control the power switch circuit. The PWM controller turns OFF the PWM signal based on a ramp signal that emulates a current of an output inductor and a feedback signal that indicates an error between the output voltage and a reference voltage.