发明名称 |
Base drive circuit for a four-terminal power Darlington |
摘要 |
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.
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申请公布号 |
US4380795(A) |
申请公布日期 |
1983.04.19 |
申请号 |
US19810246975 |
申请日期 |
1981.03.24 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE UNITED STATES DEPARTMENT OF ENERGY |
发明人 |
LEE, FRED C.;CARTER, ROY A. |
分类号 |
H02M7/5387;H03K17/0412;H03K17/615;(IPC1-7):H02M7/53 |
主分类号 |
H02M7/5387 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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