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. 03, 1998
Filed:
Aug. 13, 1997
Applicant:
Inventor:
Naoaki Sudo, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 60 ; 307110 ;
Abstract
A plurality of diode-connected MOS transistors are arranged in cascade connection, and clocks are supplied to nodes between the MOS transistors. A node (N40) is connected to a first voltage source line (VCC) via a first switch (SW1), a node (N46) is connected to a second voltage source (GND) via a second switch (SW2), an intermediate node (N43) is connected to a third voltage source (VCC) via a third switch (SW3). The third switch is turned ON and the first and second switches are turned OFF to output the positive high voltage (VPP) from the node (N46) and also to output the negative high voltage (VBB) from the node (N40).