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:
Sep. 16, 1997
Filed:
Jul. 03, 1996
Amado A Caliboso, Sunnyvale, CA (US);
Ali Tasdighi, San Jose, CA (US);
John P Tero, Saratoga, CA (US);
TelCom Semiconductor, Inc., Mountain View, CA (US);
Abstract
A charge pump circuit including two transfer capacitors, two reservoir capacitors and a plurality of switches. The transfer capacitors are charged to Vin when the charge pump circuit is in a first operating state, the transfer capacitors are connected in a first series arrangement to apply a +2 Vin charge to one of the reservoir capacitors when the charge pump circuit is in a second operating state, and the transfer capacitors are connected in a second series arrangement to apply a -2 Vin charge to the other of the reservoir capacitors when the charge pump circuit is in a third operating state. A control circuit is provided to control the plurality of switches such that the charge pump circuit enters the first through third operating states is a predetermined sequence.