发明名称 |
Control circuit with a level shifter for switching an electronic switch |
摘要 |
A control circuit for a power transistor, connected between two supply terminals in series with a load. The control circuit comprises a control logic circuit which produces a signal at two levels with respect to a reference terminal, a level shifter connected between the control circuit and the power transistor, which produces a signal at two levels relative to the node between the power transistor and the load. The level shifter comprises a flip-flop the output of which controls the power transistor, and an electronic switch, for example a MOSFET transistor, connected between the "set" input of the flip-flop and the node and controlled by the "reset" input of the flip-flop in such a way as to be closed when the "reset" input is greater, by a predetermined value, than that of the node. The electronic switch prevents the parasitic current flowing through the set and reset inputs from erroneously switching the power transistor.
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申请公布号 |
US5572156(A) |
申请公布日期 |
1996.11.05 |
申请号 |
US19950529883 |
申请日期 |
1995.09.18 |
申请人 |
SGS-THOMSON MICROELECTRONICS S.R.L. |
发明人 |
DIAZZI, CLAUDIO;MARTIGNONI, FABRIZIO;TARANTOLA, MARIO |
分类号 |
H02P7/29;H03K3/356;H03K17/06;H03K17/16;H03K17/687;(IPC1-7):H03K3/00 |
主分类号 |
H02P7/29 |
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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