Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2011-03-22
2011-03-22
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S543000, C327S546000, C326S033000, C326S034000, C324S522000, C324S763010, C324S762010
Reexamination Certificate
active
07911263
ABSTRACT:
A dormant mode target semiconductor device within a leakage current target unit is identified for mitigating leakage current to prevent it from reaching catastrophic runaway. A leakage current shift monitor unit is electrically connected to the output node of the leakage current target unit and collects leakage current from the selected target semiconductor device for two consecutive predefined temporal periods and measures the difference between the collected leakage currents. A comparator receives and compares the outputs of the current shift monitor unit and a reference voltage generator. The comparator propagates an alert signal to the leakage current target unit when the leakage voltage output from the leakage current shift monitor unit exceeds the reference voltage, a condition that indicates that the leakage current is about to approach catastrophic runaway levels. This alert signal switches the target semiconductor device to an active mode for leakage mitigation, which includes a repair voltage from a repair voltage generator applied to the gate of the target semiconductor device.
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Guo Jong-Ru
Hsu Louis Lu-Chen
Joshi Rajiv Vasant
Wang Ping-Chuan
Yang Zhijian
Donovan Lincoln
International Business Machines - Corporation
O'Neill Patrick
Young Preston J.
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