发明名称 |
Integrated inductive load snubbing device |
摘要 |
A transient suppressor comprises a self-triggered silicon control rectifier (SCR) that forms a drive circuit for an NPN power transistor. The SCR and the NPN power transistor are combined, along with other elements, into an integrated circuit (IC) by a junction isolated BiCMOS process. The SCR self-triggers upon being subjected to an inductive flyback condition created by an inductive load and renders the NPN transistor conductive, thereby allowing the NPN power transistor, having a relatively large semiconductor region, to effectively snub the current created by the negative feedback condition. The transient suppressor may be used in either a high-side or low-side driver arrangement and the SCR/NPN power transistor combination may further be combined with load driving and other circuitry on a single integrated circuit. The IC is designed to perform normally when subjected to transient conditions and further when there exists a potential voltage differential between the circuit ground and the load ground of at least 2 volts.
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申请公布号 |
US5932898(A) |
申请公布日期 |
1999.08.03 |
申请号 |
US19970871804 |
申请日期 |
1997.06.09 |
申请人 |
DELCO ELECTRONICS CORPORATION |
发明人 |
DIKEMAN, JOHN MARK;GOSE, MARK WENDELL |
分类号 |
H01L27/02;H03K17/0814;(IPC1-7):H01L29/74;H01L23/62;H01L29/00 |
主分类号 |
H01L27/02 |
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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