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:
Sep. 26, 2017
Filed:
Sep. 25, 2015
Apple Inc., Cupertino, CA (US);
InHwan Oh, Cupertino, CA (US);
Bogdan T. Bucheru, San Jose, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
A power converter controller controls a power stage to produce a regulated voltage at a converter output node, using an input signal. A circuit uses an opto-coupler circuit that has an input node connected to a compensation circuit, to generate the input signal. The compensation circuit has a shunt regulator having an output that is connected to the opto-coupler circuit through series-connected first and second current limiting elements. An input of the shunt regulator is connected to the converter output node. A feedback element has one end connected between the series-connected current limiting elements and another end connected to the input of the regulator. Other embodiments are also described and claimed.