Patent ID: 6849966

Claim:
A power supply for providing power from a battery having a positive terminal and negative terminal to a load having a first terminal and a second terminal, wherein the second terminal of the load is coupled to the negative terminal of the battery, the power supply comprising: an inductor, wherein a first terminal of the inductor is coupled to the positive terminal of the battery; a first transistor, wherein a gate of the first transistor is coupled to a first pulse generator, a drain of the first transistor is coupled to a second terminal of the inductor, and a source of the first transistor is coupled to the negative terminal of the battery; a second transistor, wherein a drain of the second transistor is coupled to the second terminal of the inductor and a gate of the second transistor is coupled to a source of the second transistor, and the source of the second transistor is coupled to the first terminal of the load; and a third transistor, wherein a gate of the third transistor is coupled to a second pulse generator, a drain of the third transistor is coupled to the source of the second transistor, and a source of the third transistor is coupled to the negative terminal of the battery.