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:
May. 07, 2019
Filed:
Apr. 26, 2017
Lapis Semiconductor Co., Ltd., Yokohama, JP;
Hiroyuki Tanikawa, Yokohama, JP;
LAPIS Semiconductor Co., Ltd., Yokohama, JP;
Abstract
A charge pump unit including a capacitor that accumulates a charge on an output node according to a first clock signal and a transfer gate that takes in and applies a voltage of an input node to the output node according to a second clock signal received at a control terminal is controlled in the following manner. If the ratio of the total time of periods in which the voltage of the output node is higher than a target voltage in a predetermined monitoring period is smaller than or equal to a first threshold, i.e., if the charge pump unit executes a boosting operation for a relatively long period, a pulse voltage value of the second clock signal is increased.