Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-02-22
1986-04-08
James, Andrew J.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307296R, 330288, 330300, 357 35, 357 44, 357 48, 357 34, H01L 2972, H03K 326
Patent
active
045815470
ABSTRACT:
A method is disclosed for eliminating latch-up and analog signal errors in power circuits having a vertical output transistor structure wherein a P-type chip substrate serves as a collector of a saturating vertical PNP transistor. When the P-type substrate rises to V.sub.CC, current is injected into N-type epitaxial layer regions which may then be collected by P-type regions diffused in the epitaxial regions. Circuit problems due to these parasitic currents are avoided by providing dominantly negative feedback for potential latch mechanisms triggered by the injected currents, and providing balancing means to cancel the effects of the injected currents in analog signal paths.
REFERENCES:
patent: 3596115 (1971-07-01), Conzelmann
patent: 3821784 (1974-06-01), Heald
patent: 4024417 (1977-05-01), Hueber et al.
patent: 4147992 (1979-04-01), Davis
patent: 4345166 (1982-08-01), Allen et al.
Bynum Byron G.
Cave David L.
Jackson Jerome
James Andrew J.
Koch William E.
Motorola Inc.
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