Abstract: A voltage regulator comprising: a first regulator module comprising a first transistor switch, wherein the first module operates in a first phase and wherein the first switch is configured to receive a first signal at a first gate of the first switch from a first signal driver; a second regulator module comprising a second transistor switch, wherein the second module operates in a second phase that is different from the first phase, wherein the second switch is configured to receive a second gate drive signal at a second gate of the second switch from a second signal driver, and wherein the second signal is opposite in polarity from the first signal; and a switch that couples the first gate and the second gate during at least part of a time period during which the first switch transitions states and the second switch transitions states.

Abstract: A voltage regulator system, comprising: a switched capacitor (SC) regulator that operates at a switching frequency and receives an input voltage; and a controller configured to control an operation of the SC regulator by adjusting the switching frequency of the SC regulator based on efficiency. In some embodiments, the switching frequency is swept to determine a best efficiency. In some embodiments, the switching frequency is swept at each of a plurality of values for the input voltage. In some embodiments, the system includes further one or more switches in series with the SC regulator. In some embodiments, the SC regulator includes an output terminal that is coupled to a battery.

Abstract: Voltage regulator systems include, in part, a regulator comprising an input terminal and an output terminal, wherein the regulator is configured to receive an input voltage from an adapter at the input terminal and provide an output voltage at the output terminal, wherein the regulator comprises at least one switched capacitor regulator operating in a first conversion mode corresponding to a first conversion factor. The voltage regulator systems also include a controller configured to control an operation of the regulator, wherein the controller is configured to determine when a conversion ratio of the regulator is greater than the first conversion factor, and, in response, to send a request to the adapter to decrease the input voltage.