A method of forming a power controller comprising: providing a boost converter coupled in tandem with a buck converter to receive an input voltage and generate an output voltage on an output of the power controller; forming the power controller to operate the buck converter in a switching mode when the output voltage is greater than a first value and to operate the boost converter in a switching mode when the output voltage is less than a second value wherein the first value is greater than the second value; forming the power controller to constantly couple the input voltage to the output and not operate the buck converter or the boost converter in a switching mode when the output voltage is less than the first value and greater than the second value; forming the power controller to constantly enable an output transistor of the buck converter and disable an output transistor of the boost converter when the output voltage is less than the first value and greater than the second value; coupling a first error amplifier to receive a feedback voltage representative of the output voltage and to receive a first reference voltage, the first error amplifier having a first output; coupling a second error amplifier to receive the feedback voltage and to receive a second reference voltage, the second error amplifier having a second output; characterized in that second output of the second error amplifier is coupled to the first output of the first error amplifier such that the first output and the second output are ORed and generate a control voltage, wherein diodes are provided for ORing the first output and the second output; and coupling an adder-subtractor amplifier to receive a signal that is representative of the control voltage and when the output voltage is less than the first value and greater than the second value, using the control voltage to enable the output transistor of the buck converter, and using the output of the adder-subtractor amplifier to disable to the output transistor of the boost converter. providing a boost converter coupled in tandem with a buck converter to receive an input voltage and generate an output voltage on an output of the power controller; forming the power controller to operate the buck converter in a switching mode when the output voltage is greater than a first value and to operate the boost converter in a switching mode when the output voltage is less than a second value wherein the first value is greater than the second value; forming the power controller to constantly couple the input voltage to the output and not operate the buck converter or the boost converter in a switching mode when the output voltage is less than the first value and greater than the second value; forming the power controller to constantly enable an output transistor of the buck converter and disable an output transistor of the boost converter when the output voltage is less than the first value and greater than the second value; coupling a first error amplifier to receive a feedback voltage representative of the output voltage and to receive a first reference voltage, the first error amplifier having a first output; coupling a second error amplifier to receive the feedback voltage and to receive a second reference voltage, the second error amplifier having a second output; characterized in that second output of the second error amplifier is coupled to the first output of the first error amplifier such that the first output and the second output are ORed and generate a control voltage, wherein diodes are provided for ORing the first output and the second output; and coupling an adder-subtractor amplifier to receive a signal that is representative of the control voltage and when the output voltage is less than the first value and greater than the second value, using the control voltage to enable the output transistor of the buck converter, and using the output of the adder-subtractor amplifier to disable to the output transistor of the boost converter.