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:
Apr. 13, 2004
Filed:
Aug. 30, 2002
Seung Cheol Oh, San Jose, CA (US);
Paul S. Lazar, Santa Clara, CA (US);
Nanoamp Solutions, Inc., San Jose, CA (US);
Abstract
An improved voltage boosting circuit operates entirely from a single, common VCC voltage supply. An NMOS pass transistor has a gate input terminal to which is connected a gate boost capacitor and a PMOS precharge circuit. A drain terminal of the NMOS pass transistor is connected to a drain boost capacitor and to a drain precharge circuit. The gate boost capacitor is precharged from the common VCC voltage. The second terminal of the precharged gate boost capacitor is connected to the common VCC voltage level to thereby boost the precharged gate input terminal voltage to 2 VCC. The drain of the NMOS pass transistor has a similar boost capacitor and precharge configuration. Another embodiment further includes an additional gate preboost capacitor and a gate preboost precharge circuit for boosting the gate voltage to 3 VCC to more efficiently drive the NMOS pass transistor.