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US 9,543,841 B2Granted
Control device employed in a switched electrical power supply system
AssigneeSchneider Toshiba Inverter Europe SAS
InventorsHocine Boulharts, Allan Pierre Barauna
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Abstract
The invention relates to a control device intended to be employed in a switched electrical power supply system, said system being able in particular to be employed in a variable speed drive to power its electronics. The control device comprises a first transistor intended to receive control signals originating from a control unit and a second transistor connected in series with the first transistor and provided with a floating-control gate.
Claims17
A control device comprising:
- a first input terminal;
- a second input terminal;
- a first transistor connected to the second input terminal and provided with a gate intended to receive control signals originating from a control unit;
- a second transistor connected to the first input terminal and provided with a floating control gate, the first transistor and the second transistor connected in series between the first input terminal and the second input terminal;
- and
- a control assembly connected between the gate of the second transistor and the second input terminal and comprising a voltage source and a voltage clamping/routing device connected to the voltage source, the voltage source directly connected to a source of the first transistor, wherein
- the voltage clamping/routing device comprises a Zener diode connected in parallel with a capacitor,
- a first end of the Zener diode and a first end of the capacitor are connected to the gate of the second transistor and are not connected to the voltage source, and
- a second end of the Zener diode and a second end of the capacitor are connected to the voltage source.
6 more elements
Dependencies are inferred from the claim text.