Electronic switching device, in particular circuit-breaker and associated operating method
First Claim
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1. Electronic switching device, comprising:
- means for an undelayed switch-on;
means for an undelayed operational switch-off at the zero crossing point of the current, both during operation and on overload;
means for an immediate switch-off as a short-circuit protection, with overload protection;
means for an isolated activation, an isolated status message and a power supply at switch potential;
an SiC-JFET with a MOSFET embodied as an SPM (Smart Power MOSFET); and
at least one thyristor, the thyristor being switched in parallel with the SPM and with the combination of SiC-JFET and SPM with parallel switched thyristor being assigned a logic circuit.
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Abstract
An anti-serial cascade circuit including two silicon carbide JFETs and two silicon MOSFETs is known. Disclosed is a combination of a JFET, a smart power MOSFET SPM and a thyristor with an associated trigger circuit, which is connected in parallel to the SPM. According to an embodiment of the invention, a logic circuit co-ordinates the functional sequence.
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Citations
20 Claims
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1. Electronic switching device, comprising:
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means for an undelayed switch-on; means for an undelayed operational switch-off at the zero crossing point of the current, both during operation and on overload; means for an immediate switch-off as a short-circuit protection, with overload protection; means for an isolated activation, an isolated status message and a power supply at switch potential; an SiC-JFET with a MOSFET embodied as an SPM (Smart Power MOSFET); and at least one thyristor, the thyristor being switched in parallel with the SPM and with the combination of SiC-JFET and SPM with parallel switched thyristor being assigned a logic circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Electronic switching device, comprising:
an SiC-JFET with a MOSFET embodied as an SPM (Smart Power MOSFET); and at least one thyristor, the thyristor being switched in parallel with the SPM and with the combination of SiC-JFET and SPM with parallel switched thyristor being assigned a logic circuit. - View Dependent Claims (15, 16, 17, 18)
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19. Electronic switching device for at least one of an undelayed switch-on;
- an undelayed operational switch-off at the zero crossing point of the current, both during operation and on overload;
an immediate switch-off as a short-circuit protection, with overload protection; and
an isolated activation, an isolated status message and a power supply at switch potential, the electronic switching device comprising;an SiC-JFET with a MOSFET embodied as an SPM (Smart Power MOSFET); and at least one thyristor, the thyristor being switched in parallel with the SPM and with the combination of SiC-JFET and SPM with parallel switched thyristor being assigned a logic circuit. - View Dependent Claims (20)
- an undelayed operational switch-off at the zero crossing point of the current, both during operation and on overload;
Specification