Patent ID: 8368252
Filing Date: 2013-02-05
Classification: H02M,Y02B

Abstract:
1. A power supply to provide power for an electrical device, comprising: an input port to receive an input signal; an output port coupled to the electrical device to provide an output signal; a first power converter to convert the received input signal to a first electrical signal having a first voltage level; a second power converter to convert the first electrical signal from the first power converter to a second electrical signal having a second voltage level, and provide the second electrical signal to the output port as the output signal; a circuit to selectively bypass the second power converter and provide the first electrical signal from the first power converter to the output port as the output signal; control circuitry, coupled to the circuit to selectively bypass the second power converter, to provide a control signal to selectively bypass the second power converter, the first power converter is programmable to vary the first voltage level within a first range of voltages; the second power converter is programmable to vary the second voltage level within a second range of voltages; wherein the control circuitry comprises: comparison circuitry to determine whether a desired voltage of an electrical device coupled to the output port is within the first range of voltages or the second range of voltages; and programming circuitry to provide a first programming signal to the first power converter to program the first voltage level to the desired voltage in response to a determination that the desired voltage is within the first range of voltages and to provide a second programming signal to the second power converter to program the second voltage level to the desired voltage in response to a determination that the desired voltage is within the second range of voltages.