According to an embodiment of the invention, a method and apparatus for DC voltage conversion are described. According to one embodiment, a voltage converter comprises a current mirror, the current mirror being coupled with a power source; a first transistor device coupled with a bias generator to receive a bias voltage; a second transistor device coupled between the current mirror and the first transistor device; and an output transistor device, a gate of the output transistor device being coupled with a gate of the second transistor device and to the current mirror.