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. 07, 2021
Filed:
Oct. 07, 2020
United Microelectronics Corp., Hsinchu, TW;
Kun-Yuan Wu, Kaohsiung, TW;
Wei-Jen Wang, Tainan, TW;
Chien-Fu Chen, Miaoli County, TW;
Cheng-Yang Tsai, Tainan, TW;
Ruei-Yau Chen, Pingtung County, TW;
Yu-Lin Chen, Taichung, TW;
UNITED MICROELECTRONICS CORP., Hsinchu, TW;
Abstract
A speed-up charge pump includes a first charge pump for receiving an up signal and a down signal in digital form to produce a first voltage control signal at an output node. Further, at least one speed-up phase detector includes a first circuit path to receive the up signal and delay the up signal by a predetermined delay as a delay up signal and operate the up signal and the delay up signal by AND logic into an auxiliary up signal; and a second circuit path to receive the down signal and delay the down signal by the predetermined delay as a delay down signal and operate the down signal and the delay down signal by AND logic into an auxiliary down signal. A second charge pump is respectively receiving the auxiliary up and down signals to produce a second voltage control signal also at the output node.