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:
Jan. 16, 2001
Filed:
Oct. 25, 1999
Erkki Miettinen, Helsinki, FI;
ABB Industry Oy, Helinski, FI;
Abstract
A control circuit for controlling a power semiconductor, the control circuit comprising a gate driver comprising a control input, auxiliary voltage inputs and an output. The control circuit further comprises a first semiconductor switch comprising a control electrode and main electrodes, a first main electrode forming a positive input pole of the control circuit and a second forming an output of the control circuit; a second semiconductor switch comprising a control electrode and main electrodes, a first main electrode forming a negative input pole of the control circuit and a second being connected to the output of the control circuit; a first resistance, a second resistance, a first zener diode whose anode is connected to the output of the gate driver and whose cathode to the positive input pole of the control circuit; and a second zener diode whose cathode is connected to the output of the gate driver and whose anode to the negative input pole of the control circuit.