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:
Aug. 26, 2025
Filed:
Apr. 02, 2024
Montage Technology, Inc., San Jose, CA (US);
Jiandong Jiang, San Jose, CA (US);
Xuexin Ding, Shanghai, CN;
Montage Technology, Inc., San Jose, CA (US);
Abstract
A zero-crossing detection circuit includes a variable resistor, a first switch, a first capacitor, a first selector, a second selector, a first transistor, and a comparator. Variable resistor is connected to power supply voltage via reference resistor. First switch has first terminal coupled to first terminal of variable resistor. First capacitor has first terminal coupled to second terminal of first switch. First selector makes second terminal of first capacitor receive switching voltage or reference ground voltage according to first control signal. First transistor has first terminal coupled to second terminal of variable resistor. Second terminal of first transistor receives reference ground voltage. Second selector couples control terminal of first transistor to first terminal of first transistor or to first terminal of first capacitor according to first control signal. Comparator compares voltage on second terminal of variable resistor with reference voltage to generate final zero-crossing detection output signal.