Apparatuses and methods for a level shifter with reduced...

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control

Reexamination Certificate

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C326S063000, C326S081000

Reexamination Certificate

active

08004339

ABSTRACT:
A level-shifting circuit with reduced shoot-through current includes an output circuit comprising high-voltage devices with a pull-up circuit configured for pulling up a voltage on an output signal to a high voltage responsive to a high-side control signal. The output circuit may also include a pull-down circuit configured for pulling down the voltage on the output signal to a low voltage in responsive to a low-side control signal. The level-shifting circuit can also include a high-side inverting buffer operably coupled between an edge-controlled signal and the high-side control signal, and a low-side buffer configured for driving the low-side control signal responsive to an input signal. The level-shifting circuit may also include an edge-control buffer operably coupled between the input signal and the high-side inverting buffer and configured to generate the edge-controlled signal with a slow rise time relative to a fall time.

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patent: 7397278 (2008-07-01), Nakao
patent: 2007/0164805 (2007-07-01), Horibata et al.

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