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. 27, 2022
Filed:
Feb. 12, 2020
Nuvoton Technology Corporation, Hsinchu, TW;
Ching-Yen Chiu, Hsinchu, TW;
Chung Ming Hsieh, Hsinchu Science Park, TW;
NUVOTON TECHNOLOGY CORPORATION, Hsinchu, TW;
Abstract
A zero current detection system for a switching regulator is provided. The switching includes an inductor. In the zero current detection system, a comparator has a positive input coupled to a terminal of the inductor and an output terminal for outputting a comparison result signal; a first signal latch circuit has a clock terminal for receiving the comparison result signal and outputting a latched output signal; a delay line module starts counting upon receipt of the latched output signal, and then outputs a zero current detection signal after counting a delay time; in response to the zero current detection signal, a voltage sampling module samples a node voltage at two different time points, to generate two sampling voltages; a delay control module adjusts the delay time of the delay line module according to the two sampling voltages.