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:
Jun. 17, 2014
Filed:
Nov. 05, 2012
Powerchip Technology Corporation, Hsin-Chu, TW;
Akira Ogawa, Tokyo, JP;
Powerchip Technology Corp., Hsin-Chu, TW;
Abstract
TASK: to provide an internal voltage trimming circuit having a simple configuration and operated by a consumption current smaller than that using a comparator. MEANS FOR SOLVING THE PROBLEM: An internal voltage trimming circuit comprises a trimming controller using a change in a counting value of a clock according to a current flowing through a transistor of a power supply current source for a clock generator to trim an internal voltage generated by an internal voltage generator. The trimming controller counts a first counting value of the clock when a predetermined reference voltage is applied to a control terminal of the transistor and a second counting value of the clock when the internal voltage is applied to the control terminal of the transistor and controls the internal voltage generated by the internal voltage generator to substantially coincide the second counting value with the first counting value.