Circuit arrangement for controlling a power supplied to a load

Details Circuit arrangement for controlling a power supplied to a load Circuit arrangement for controlling a power supplied to a load

2005-02-22

2005-02-22

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S304000, C323S288000

Reexamination Certificate

active

06859021

ABSTRACT:
A circuit for controlling the power supplied to a load. The circuit includes a controlled self-conducting semiconductor switch (4) connected in-series with the load (2). Further, a first energy storage circuit (9a) is provided in-series with the load and includes a first energy storage element (6a) and a first rectifier (8a) connected in-series thereto. A controlled auxiliary switch (12) is also included in the circuit in-parallel fashion to the first energy storage element. A control sub-circuit (13) is provided near the energy storage element which is associated with the self-conducting semiconductor switch and the auxiliary switch. The control sub-circuit closes or opens the auxiliary switch when the voltage on the first energy storage element exceeds a predetermined first value or falls short of a predetermined second value.

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Peter Friedrichs, et al., “ SiC Power Devices with Low On-Resistance for Fast Switching Applications”, ISPSD 2000- 12thIEEE International Symposium on Power Semiconductor Devices & ICs, Toulouse, Siemens AG, Corporate Research and Development A&D SD E6, pp. 213-216.

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