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. 19, 2019
Filed:
May. 30, 2019
Allegro Microsystems, Llc, Manchester, NH (US);
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
A multi-mode charge pump generates a regulated voltage at an output node from a battery input voltage. The multi-mode charge pump has a plurality of flying capacitors and a plurality of switches coupled to the flying capacitors in order to selectively couple the flying capacitors to the battery, the output node or a reference potential. The regulated voltage is provided across a storage capacitor coupled to the flying capacitors, and the regulated voltage is input to a comparator. The comparator also receives a reference voltage and compares the regulated voltage to the reference voltage to generates an asynchronous regulation signal. A controller in the multi-mode charge pump can automatically transition between operation modes such as a buck mode, a doubler mode and a tripler mode by controlling actuation of the switches in response to the asynchronous regulation signal and clock signals.