Asymmetric snubber resistor

Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Passive components in ics

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257489, 257528, 257532, 257535, 257536, 257533, 257539, 257542, 257546, 257601, H01L 2358, H01L 2900, H01L 2993

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058805133

ABSTRACT:
An asymmetric snubber resistor in accordance with the present invention includes a cathode, an N+ region, an N- region, a plurality of P+ regions, and an anode. The N+ region is disposed over the cathode, the N- region is disposed over the N+ region, the plurality of P+ regions are disposed over the N- region, and the anode is disposed over the plurality of P+ regions and exposed portions of the N- region. The asymmetric snubber may also include N regions between the P+ regions. The asymmetric snubber resistor replaces the snubber diode and the snubber resistor in a typical snubber circuit.

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Raderecht, P.S., "A review of the `shorted emitter` principle as applied to p-n-p-n silicon controlled rectifiers," Int. Journal of Electronics, vol. 31, No. 6 pp. 541-564 (1971).
Sze, S.M., Physics of Semiconductor Devices, John Wiley & Sons, pp. 351-354 (1981).

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