Patent ID: 8482949

Claim:
A device configured for switching for driving capacitive loads, the device comprising: a first input terminal, and a second input terminal, for applying a voltage supply, such that a higher potential of said supply is applicable to the first input terminal and a lower potential is applicable to the second input terminal; a first switch and a second switch, connected in series between the first input terminal and the second input terminal; a first clamping diode and a second clamping diode, connected in series and in the same blocking direction between the first input terminal and the second input terminal, such that the first clamping diode and the second clamping diode block with respect to the applied voltage; a storage inductor, which is connected with one of its terminals to a connecting point of both switches and with another terminal to a connecting point of both clamping diodes; and an output terminal for connecting a capacitive load, which output terminal is connected with the connecting point of both clamping diodes, said device further configured for periodically repeating an actuation sequence of the switches so as to modulate a duty cycle of said load.