Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-10-10
2006-10-10
Zweizig, Jeffrey (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S540000
Reexamination Certificate
active
07119604
ABSTRACT:
Disclosed herein is a back-bias voltage regulator circuit for regulating a back-bias voltage used to control leakage current in at least one transistor within a primary circuit. In one embodiment, the back-bias voltage regulator circuit includes a voltage divider circuit configured to receive a back-bias voltage from a charge pump, and to generate a divided voltage signal by dividing the back-bias voltage based on a ratio of resistances of resistive elements within the voltage divider. In addition, the regulator circuit includes an output circuit configured to receive the back-bias voltage from the charge pump and having an output node for outputting the back-bias voltage, as well as a reference voltage circuit configured to generate a reference voltage signal based on a threshold voltage of the at least one transistor in the primary circuit. Also in such an embodiment, the regulator circuit includes a comparison circuit configured to compare the divided voltage signal to the reference voltage signal and to operate the output circuit to regulate the back-bias voltage level based on the comparison. Also disclosed is a related method of regulating a back-bias voltage to control leakage current in at least one transistor within a primary circuit.
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Baker & McKenzie LLP
Taiwan Semiconductor Manufacturing Company , Ltd.
Zweizig Jeffrey
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