Patent · US Expired

Integrated circuit Darlington transistor power stage incorporating various circuit components integrated on the same substrate

US4755694A · kind A · utility

10Cited by

7References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernd Bodig · Leinfelden, DE
Lothar Gademann · Rottenburg am Neckar, DE
Gerd Hohne · Ludwigsburg, DE
Hartmut Michel

Key dates

Filing date	Jul 1, 1987
Grant date	Jul 5, 1988
Priority date	—
Expiry date	Jul 1, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH10D84/642
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An integrated anode power stage using one or more Darlington transistors combinations is constituted for currents exceeding 5 amperes and voltages exceeding 200 volts. On a common semiconductor substrate there are provided, in addition to the Darlington circuit or circuits a large number of peripheral components, both active and passive, such as are required for protection, regulation and turning on or off of the final stage for operating an ignition coil in a motor vehicle. By providing these components in basins of the same conductivity type as the base of the power transistor a unit is provided that is economical to make as well as compact and reliable.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.