Semiconductor power switch comprising a thyristor

Details Semiconductor power switch comprising a thyristor Semiconductor power switch comprising a thyristor

H - Electricity

01

L

356/31, 323/4

H01L 25/18 (2006.01) H01L 27/07 (2006.01)

Patent

CA 1231466

ABSTRACT OF THE INVENTION "A SEMICONDUCTOR POWER SWITCH COMPRISING A THYRISTOR" A power switch comprises an asymmetrically blocking thyristor (ASCR) (1) which is connected in series with a diode (2). Both the ASCR and the diode require only approximately half the central zone thickness as compared with a symmetrically blocking thyristor designed for an equal blocking voltage in the reverse direction (URRM). This results in a substantially smaller turn-off delay charge (Qrr) for the series arrangement. (Figure 1)

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