Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Including dielectric isolation means
Reexamination Certificate
2007-06-07
2011-11-15
Lee, Eugene (Department: 2815)
Active solid-state devices (e.g., transistors, solid-state diode
Integrated circuit structure with electrically isolated...
Including dielectric isolation means
C257S532000, C257SE29001, C257SE29218, C257SE25014, C257SE25024, C257SE27034
Reexamination Certificate
active
08058700
ABSTRACT:
An improvement for a smart, highside, high current, power switch module formed in an integrated circuit having at least one composite MOS/FET transistor switch connected to controlling and protection circuits. The power switch module has a load terminal (L), a battery input terminal (B), a control input terminal (C) and a diagnostic feedback terminal (M). The improvement provides overcurrent protection from a substantially instantaneous short circuit across an electrical load connected to the load terminal of the power switch module. The improvement is a capacitive circuit element connected between the battery input terminal (B) and the diagnostic feedback terminal (M). The capacitance of the capacitive circuit element should be at least large enough that the capacitive circuit element applies a power supply voltage to the controlling and protection circuits for a time interval that maintains the protection circuits operative and able to turn OFF the MOS/FET transistor switch in the event of the short circuit.
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Infineon Technologies, Smart Highside High Current Power Switch, Oct. 1, 2003, pp. 1-16, Infineon Technologies AG, Munchen, Germany.
Foster Frank H.
InPower LLC
Kremblas & Foster
Lee Eugene
Shamsuzzaman Mohammed
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