Capacitor-coupled level shifter with duty-cycle independence

Details Capacitor-coupled level shifter with duty-cycle independence Capacitor-coupled level shifter with duty-cycle independence

2007-10-16

2007-10-16

Tran, Anh Q. (Department: 2819)

Electronic digital logic circuitry

Interface

Supply voltage level shifting

C326S068000, C326S080000

Reexamination Certificate

active

11341337

ABSTRACT:
A circuit architecture, or topology, that provides a level shifter which is substantially independent of the duty cycle of an input signal includes an H-bridge arrangement of field effect transistors, a pair of capacitively coupled inputs terminals connected to the gates of the high-side (i.e., connected to the positive power supply) transistors and a pair of voltage dividers to set the bias voltage at the gates of the high-side transistors, wherein one side of each voltage divider is coupled to the power supply node and the other side of each voltage divider is cross-coupled to the output node of the opposite side of the H-bridge.

REFERENCES:
patent: 6980194 (2005-12-01), Tobita
patent: 2004/0124901 (2004-07-01), Yamahira et al.

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