Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2011-01-04
2011-01-04
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
C327S537000, C327S543000, C365S189090
Reexamination Certificate
active
07863967
ABSTRACT:
A multistage circuit for regulating the charge voltage or the discharge current of a capacitance of an integrated device at a certain charge-pump generated boosted voltage is implemented without integrating high voltage transistor structures having a type of conductivity corresponding to the same sign of the boosted voltage (high-side transistors). The multistage circuit current includes at least a first stage, and an output stage in cascade to the first stage and coupled to the capacitance. The first stage is supplied at an unboosted power supply voltage of the integrated device, and the output stage is supplied at an unregulated charge-pump generated boosted voltage. The first stage includes a transistor having a type of conductivity corresponding to an opposite sign of the boosted voltage and of the power supply voltage. The drain of the output stage transistor is coupled to the boosted voltage either through a resistive pull-up or a voltage limiter.
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Crippa Luca
Micheloni Rino
Ragone Giancarlo
Sangalli Miriam
Donovan Lincoln
Englund Terry L
Schwabe Williamson & Wyatt P.C.
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