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. 03, 2017
Filed:
Jul. 30, 2013
Qualcomm Incorporated, San Deigo, CA (US);
Vincenzo F Peluso, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Techniques for generating a control voltage for a pass transistor of a linear regulator to avoid in-rush current during a start-up phase. In an aspect, a digital comparator is provided to generate a digital output voltage comparing a function of the regulated output voltage with a reference voltage, e.g., a ramp voltage. The digital output voltage is provided to control a plurality of switches selectively coupling the gate of the pass transistor to one of a plurality of discrete voltage levels, e.g., a bias voltage or a ground voltage to turn the pass transistor on or off. In another aspect, the digital techniques may be selectively enabled during a start-up phase of the regulator, and disabled during a normal operation phase of the regulator.