发明名称 |
Drive unit for switching element and method thereof |
摘要 |
The present application provides a drive unit for a switching element, the driving unit having a function that is capable of promptly detecting the flow of excess current. The unit is usable for an electrical rotating machine. A drive unit for a switching element, comprising: a sense terminal output current detecting means for detecting an output current of a sense terminal that outputs a minute current having correlation with a current flowing between an input terminal and an output terminal of a switching element; a switching element drive control means for restricting the driving of the switching element when the output current detected by the sense terminal output current detecting means exceeds a predetermined threshold value; and a threshold changing means for changing the threshold value on the basis of a difference of electric potential between the input terminal and the output terminal of the switching element. |
申请公布号 |
US9461464(B2) |
申请公布日期 |
2016.10.04 |
申请号 |
US201313845726 |
申请日期 |
2013.03.18 |
申请人 |
DENSO CORPORATION |
发明人 |
Asako Yousuke;Maebara Tsuneo |
分类号 |
H02M7/537;H02H9/02;H03K17/082;H03K17/08 |
主分类号 |
H02M7/537 |
代理机构 |
Nixon & Vanderhye P.C. |
代理人 |
Nixon & Vanderhye P.C. |
主权项 |
1. A drive unit for a switching element, comprising:
a sense terminal output current detecting means for detecting an output current of a sense terminal that outputs a minute current having correlation with a current flowing between an input terminal and an output terminal of a switching element; a switching element drive control means for restricting the driving of the switching element when the output current detected by the sense terminal output current detecting means exceeds a predetermined threshold value Vth; and a threshold changing means for changing the threshold value on the basis of a difference of electric potential between the input terminal and the output terminal of the switching element. |
地址 |
Kariya JP |