Circuit configuration with error feedback for the actuation...

Details Circuit configuration with error feedback for the actuation... Circuit configuration with error feedback for the actuation...

2007-06-19

2007-06-19

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

Using semiconductor-type converter

C363S098000, C307S115000

Reexamination Certificate

active

11439839

ABSTRACT:
The invention relates to an integrated circuit configuration proposed for the actuation of power switches disposed in bridge connection and an associated method. The primary side of this circuit configuration is herein connected with the secondary side, which actuates the TOP switch, via a level shifter. The circuit configuration comprises furthermore between the primary side and a secondary side a diode for error status conveyance from the secondary side to the primary side. The anode-side terminal of the diode is connected with the primary side and its cathode-side terminal with the secondary side of the driver circuit. The primary side applies a voltage to this diode. In the presence of error-free operation the secondary side applies level “high” (Vd) to the cathode of the diode and, in the presence of faulty operation, level “low” (Vg). The error status on the secondary side is detected by the primary side thereby that a current flow takes place through the diode, since the secondary side is approximately at ground reference potential via the open BOT switch or via the high-ohmic resistor.

REFERENCES:
patent: 4748532 (1988-05-01), Commander et al.
patent: 5500791 (1996-03-01), Kheraluwala et al.
patent: 6580625 (2003-06-01), Throngnumchai et al.
patent: 7158389 (2007-01-01), Yasumura

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