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. 16, 2010
Filed:
Jan. 09, 2007
Erkki Miettinen, Helsiki, FI;
Erkki Miettinen, Helsiki, FI;
ABB Oy, Helsinki, FI;
Abstract
A gate-controlled switch configuration comprising a gate-controlled switch (V) and a gate driver system (Ctrl, D, D, V, V), which in its first functional state is configured to change the amount of charge (Qgate) in the gate (G) of the gate-controlled switch (V) to provide a normal turn-off functionality for the gate-controlled switch (V), and in its second functional state it is configured to maintain the amount of charge (Qgate) in the gate (G) of the gate-controlled switch (V) substantially constant. The gate driver system (Ctrl, D, D, V, V) is configured to produce a soft turn-off functionality during which the gate driver system (Ctrl, D, D, V, V) is in the first functional state a plural number of times, and between the subsequent first functional states it is in its second functional state.