Apparatus and method for switch connected as a diode in a...

Electric power conversion systems – Current conversion – With voltage multiplication means

Reexamination Certificate

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C363S059000, C363S061000, C327S536000, C307S109000

Reexamination Certificate

active

07430133

ABSTRACT:
A switched-capacitor type voltage regulator is provided. The regulator includes a flying capacitor and switches, including first and second transistors which operate as switches. The switches are arranged to operate such that the flying capacitor is coupled to an input voltage during a first phase, and switched to provide an output voltage during a second phase. During the first phase, the first transistor is employed to couple the capacitor to the input voltage, and a second transistor is employed to couple (the other side of) the capacitor to another node (e.g. Ground). Additionally, another switch is coupled between the gate and the drain of either the first transistor or the second transistor. Also, during the first phase, if the input voltage is greater than the output voltage, the other switch is closed so that the transistor that the other switch is connected to operates as a diode.

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