| US 7,456,677 B1 | ||
| Fractional gain circuit with switched capacitors and smoothed gain transitions for buck voltage regulation | ||
| Arun Rao, Rocklin, Calif. (US); John Philip Parry, Grass Valley, Calif. (US); William J. McIntyre, Wheatland, Calif. (US); and Nathanael Griesert, Grass Valley, Calif. (US) | ||
| Assigned to National Semiconductor Corporation, Santa Clara, Calif. (US) | ||
| Filed on May 01, 2006, as Appl. No. 11/381,101. | ||
| Int. Cl. G05F 1/10 (2006.01) | ||
| U.S. Cl. 327—536 [327/538] | 24 Claims |
| 1. A switch array circuit, comprising:
an input terminal for receiving an input voltage signal, wherein the input voltage signal has a voltage level that is greater
than another voltage level for an output voltage signal;
an output terminal for providing access to the output voltage signal;
three capacitive components that are to be connected to enable each of a plurality of gain phases of one-half, two-fifths
and one-third, wherein each of the gain phases are employable to buck the voltage level of the input voltage signal down to
the lower other voltage level of the output voltage signal;
a plurality of switches that are operable to selectively switch the three capacitive components so as to produce the respective
gains of one-half, two-fifths and one-third.
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