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:
Mar. 08, 2005
Filed:
May. 27, 2003
Yannick Guedon, Sassenage, FR;
Philippe Maige, Seyssinet-Pariset, FR;
Yannick Guedon, Sassenage, FR;
Philippe Maige, Seyssinet-Pariset, FR;
STMicroelectronics S.A., , FR;
Abstract
An intermediate stage of a high-voltage inverting amplifier includes a drive transistor (MB) of the thin-gate-oxide high-voltage MOS type connected between a supply terminal and the gate of an output transistor (M). At least one first diode (DB) is included in the intermediate stage, wherein the cathode of that diode is connected to the gate of the drive transistor and the anode is connected to a level transposition stage of the amplifier. A control circuit is connected to the gate of the drive transistor so as to enable it to conduct when an initially zero supply voltage reaches the threshold voltage of the drive transistor. This causes the output transistor to conduct more quickly with increased supply voltage than would be experienced with prior art designs.