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. 06, 2004
Filed:
May. 21, 2002
John Pettruzello, Carmel, NY (US);
Benoit Dufort, Valhalla, NY (US);
Theodore Letavic, Putnam Valley, NY (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention provides a semiconductor device of the SOI-LDMOS type in which the field plate is divided into a plurality of electrically isolated sub-field plates. At least two of the divided sub-field plates are connected to external circuits for reading their respective output voltages. By connecting a first external circuit and a second external circuit having specific components, one is configured for determining an instantaneous output voltage and the other is configured for determining a change in output voltage as a function of time. Power is disconnected from the semiconductor device if either the instantaneous voltage or the derivative of voltage over time exceeds an established value.