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:
Oct. 02, 2018
Filed:
May. 18, 2016
Semiconductor Components Industries, Llc, Phoenix, AZ (US);
Gang Chen, Tai Po, HK;
Gabor Reizik, Dublin, CA (US);
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Abstract
A voltage regulator includes a control circuit, a switch circuit, a first over-current protection circuit, and a second over-current protection circuit. The control circuit generates a pulse-width modulation (PWM) signal having a duty cycle proportional to an output voltage of the voltage regulator. The first over-current protection circuit blocks the PWM signal when an over-current condition exists during an off time of the PWM signal until a low-side switch current-sense level in the switch circuit drops below a set current limit level, while the second over-current protection circuit turns off the PWM signal when an over-current condition occurs during an on time of the PWM signal when a ramp adjusted voltage level added to the low-side switch current-sense level exceeds a summed level of the set current limit level and a set threshold.