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.

Date of Patent:
Jun. 12, 2018

Filed:

Mar. 20, 2017
Applicant:

Monolithic Power Systems, Inc., San Jose, CA (US);

Inventor:

Lei Li, Chengdu, CN;

Assignee:

Monolithic Power Systems, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/089 (2006.01); G06F 1/04 (2006.01); H03L 5/00 (2006.01);
U.S. Cl.
CPC ...
H03L 7/0891 (2013.01); H03L 5/00 (2013.01);
Abstract

A clock circuit and control method thereof to avoid missing the clock signal generated by the clock circuit when the generated clock signal is synced with an external clock signal, wherein the clock circuit comprises a current compensation circuit and a current control circuit. The clock signal is generated by alternately charging and discharging a capacitor with a charging current based on a sync current and a compensating current when an external clock signal is detected. The compensating current is generated based on a frequency of the external clock signal, and the sync current is provided based on a phase difference between the generated clock signal by the clock circuit and the external clock signal.


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