Method of operating parallel-connected semiconductor switch elem

Details Method of operating parallel-connected semiconductor switch elem Method of operating parallel-connected semiconductor switch elem

1984-12-31

1986-10-07

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307254, 307296R, 323272, H03K 1756, H03K 301, G06F 156

Patent

active

046161422

ABSTRACT:
In power circuit designs, it is sometimes necessary to connect two or more semiconductor power switches in parallel and to simultaneously operate both so that current levels in excess of the rated current handling capability of one of the devices can be conducted. Such operation, however, encounters the problem of current sharing which results from variations in the characteristics of the parallel-connected devices. The method of the present invention obviates the difficulties encountered with current sharing by operating N parallel-connected semiconductor devices one at a time in sequential fashion so that each device conducts an average current equal to the desired average output current divided by N.

REFERENCES:
patent: 3675114 (1972-07-01), Nercessian
patent: 4532443 (1985-07-01), Glennon

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