Self-adaptive soft turn-on of power switching devices

Details Self-adaptive soft turn-on of power switching devices Self-adaptive soft turn-on of power switching devices

2011-04-12

2011-04-12

Pert, Evan (Department: 2826)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Accelerating switching

C327S378000, C123S618000, C361S253000

Reexamination Certificate

active

07924081

ABSTRACT:
An embodiment of a control circuit is proposed for turning on a power switching device, the switching device turning on in response to a control signal exceeding a threshold value. The control circuit includes pre-charging means for providing the control signal at a pre-charging value not reaching the threshold value, and soft turn-on means for gradually increasing the control signal from the pre-charging value to a turn-on value exceeding the threshold value; the pre-charging means includes means for sensing an indication of the threshold value, and means for setting the pre-charging value according to the sensed threshold value.

REFERENCES:
patent: 4964377 (1990-10-01), Scarnera
patent: 5127388 (1992-07-01), Cicalese et al.

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