Circuit for driving semiconductor switches
First Claim
1. A circuit comprising:
- a first control unit which controls a first semiconductor switch connecting an output of the circuit to a first supply voltage terminal;
a second control unit which controls a second semiconductor switch connecting the output of the circuit to a second supply voltage terminal;
a single operating voltage source which supplies a first voltage to the first control unit;
a rechargeable energy storage device which supplies a second voltage to the second control unit;
a switching device connecting the first control unit to the second control unit;
wherein a terminal of the operating voltage source is connected to the first supply voltage terminal and a terminal of the energy storage device is connected to the output of the circuit, and wherein the switching device is switched by the first control unit and transmits a current from the first control unit to the second control unit, the current charging the energy storage device and transmitting control information.
1 Assignment
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Accused Products
Abstract
A circuit includes a first control unit which controls a first semiconductor switch connecting an output of the circuit to a first supply voltage terminal and a second control unit which controls a second semiconductor switch connecting the output of the circuit to a second supply voltage terminal. A single operating voltage source supplies a voltage to the first control unit, whereas a rechargeable energy storage device supplies a voltage to the second control unit. One terminal of the operating voltage source is connected to the first supply voltage terminal and one terminal of the energy storage device is connected to the output of the circuit. The first control unit and the second control unit are connected with each other via a switching device which is switched by the first control unit and which transmits, preferably when the first semiconductor switch is closed and the second semiconductor switch is open, a current for charging the energy storage device and for transmitting control information from the first control unit to the second control unit.
10 Citations
10 Claims
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1. A circuit comprising:
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a first control unit which controls a first semiconductor switch connecting an output of the circuit to a first supply voltage terminal; a second control unit which controls a second semiconductor switch connecting the output of the circuit to a second supply voltage terminal; a single operating voltage source which supplies a first voltage to the first control unit; a rechargeable energy storage device which supplies a second voltage to the second control unit; a switching device connecting the first control unit to the second control unit; wherein a terminal of the operating voltage source is connected to the first supply voltage terminal and a terminal of the energy storage device is connected to the output of the circuit, and wherein the switching device is switched by the first control unit and transmits a current from the first control unit to the second control unit, the current charging the energy storage device and transmitting control information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification