Patent ID: 8963585
Filing Date: 2015-02-24
Classification: H02M,H03K

Abstract:
1. An apparatus comprising: three or more parallel or series connected electrical switching devices, each switching device having a control terminal, and at least one intelligent gate driver unit including: a control output connected to the control terminal of one of the switching devices; a first receiving component configured to receive turn-on and turn-off commands for the switching device; a second receiving component configured to receive feedback information on turn-on and turn-off events of the switching device; a third receiving component configured to receive reference information signal identifying turn-on and turn-off events of one of the other switching devices; a first calculating component configured to calculate a value for a control parameter on the basis of the feedback information and the reference information signal; and a first controlling component configured to control, based on the turn-on-and turn-off command and the control parameter, a control signal at the control output to control the switching device, wherein one of the switching devices is a master switching device, and the third receiving components of two or more of the intelligent gate driver units are commonly supplied with a master reference information signal identifying turn-on and turn-off events of only the master switching device as the reference information signal of the two or more of the intelligent gate driver units.