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发明授权
US5418674A Multi-lead protected power device having current and boot-strap inputs 失效
多引线保护功率器件具有电流和引导输入

Multi-lead protected power device having current and boot-strap inputs
摘要：
A multi-leaded protected power device having a boot-strap input has been provided. The power device includes a current controlled, boot-strap driven control die (20) for use with a power transistor (25). The control die includes an under voltage lock-out circuit (46) which inhibits drive to the power transistor until the input signals exceed a predetermined threshold level. Moreover, the control die includes a noise immunity enhancement circuit (56) for providing an excess reverse bias across an output SCR (58) for preventing false triggering of the output SCR. The power device further includes a status output lead (204) for indicating when a voltage occurring across the power transistor has exceeded a predetermined threshold, and a current output lead (220) for providing a current that is proportional to a current flowing through the power transistor.
摘要（中）：

已经提供了具有引导输入的多引线受保护的功率器件。 功率器件包括用于与功率晶体管（25）一起使用的电流控制的引导带驱动的控制管芯（20）。 控制管芯​​包括欠压锁定电路（46），其阻止对功率晶体管的驱动，直到输入信号超过预定阈值电平。 此外，控制管芯包括用于在输出SCR（58）上提供过大的反向偏置以防止输出SCR的错误触发的抗噪声增强电路（56）。 所述功率器件还包括状态输出引线（204），用于指示所述功率晶体管两端出现的电压何时已经超过预定阈值;以及电流输出引线（220），用于提供与流过所述功率的电流成比例的电流 晶体管。

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