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:
Nov. 20, 2001
Filed:
Mar. 22, 2000
Naoaki Sudo, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Boost circuit units are connected in parallel. A boost output voltage V,′ of a dummy boost circuit unit having the same configuration as the boost circuit units is detected by a voltage detection circuit. The voltage detection circuit outputs a signal TBST,which becomes “high” when V,′ is lower than V,and “low” when V,′ is equal to or higher than V,. The TBST,signal is input to a NAND circuit. When a “high” signal is input to the NAND circuit, an input voltage ATDBST,is input to the boost circuit unit as well via the NAND circuit and the two boost circuit units perform boost operation. Thus, a boost circuit can suppress the dispersion of the boost voltage caused by the dispersion of the process condition and the variation of the external temperature besides the variation of the power supply voltage Vcc.