Base drive circuit for a four-terminal power Darlington
Abstract
A high power switching circuit which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.
- Inventors:
-
- Blacksburg, VA
- Salem, VA
- Issue Date:
- Research Org.:
- Virginia Polytechnical Institute and State University
- OSTI Identifier:
- 864540
- Patent Number(s):
- 4380795
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03K - PULSE TECHNIQUE
- DOE Contract Number:
- DEN 3-65
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- base; drive; circuit; four-terminal; power; darlington; switching; utilizes; transistor; block; improve; speed; particularly; rapid; turn-off; independent; reverse; currents; utilized; expel; minority; carriers; pair; charge; sweep-out; rate; current; provided; transformer; secondary; tapped; terminal; stage; application; element; chopper-inverter; electric; vehicle; propulsion; power switching; current transformer; base drive; electric vehicle; minority carrier; switching circuit; drive circuit; minority carriers; reverse drive; drive current; darlington transistor; vehicle propulsion; switching speed; switching element; drive currents; /363/318/
Citation Formats
Lee, Fred C, and Carter, Roy A. Base drive circuit for a four-terminal power Darlington. United States: N. p., 1983.
Web.
Lee, Fred C, & Carter, Roy A. Base drive circuit for a four-terminal power Darlington. United States.
Lee, Fred C, and Carter, Roy A. Sat .
"Base drive circuit for a four-terminal power Darlington". United States. https://www.osti.gov/servlets/purl/864540.
@article{osti_864540,
title = {Base drive circuit for a four-terminal power Darlington},
author = {Lee, Fred C and Carter, Roy A},
abstractNote = {A high power switching circuit which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}
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