Abstract: Described is an apparatus which comprises: a source to generate a first current having AC and DC components; a current-to-voltage converter to convert the first current or a copy of the first current to a first voltage proportional to a resistance, the first voltage having AC and DC components that correspond to the AC and DC components of the first current; a sample-and-hold circuit to filter the AC component from the first voltage and for providing an output voltage with the DC component; and an amplifier to receive the output voltage.

Abstract: Described is an apparatus which comprises: an amplifier to receive a reference voltage; and calibration logic which is operable to receive a first voltage and to provide the reference voltage to the amplifier, wherein the calibration logic is operable to generate a look-up table (LUT) that maps the first voltage to a drive current.

Abstract: In an embodiment, a system includes voltage sensing logic to determine a first source voltage Vfirst source corresponding to a first source, and a controller to receive an indication of Vfirst source from the voltage sensing logic. The controller is to, responsive to Vfirst source>a first output voltage (V1), select a first source first regulator to input Vfirst source and provide V1; responsive to Vfirst source>a second output voltage (V2), select a first source second voltage regulator that inputs Vfirst source, and provide V2; responsive to Vfirst source?V1, select a second source first voltage regulator that inputs a second source voltage Vsecond source that corresponds to a second source and is substantially constant in time where Vsecond source>V1, and provide V1 independent of the first source first regulator and the first source second voltage regulator. Other embodiments are described and claimed.

Abstract: In an embodiment, a system includes voltage sensing logic to determine a first source voltage Vfirst source corresponding to a first source, and a controller to receive an indication of Vfirst source from the voltage sensing logic. The controller is to, responsive to Vfirst source>a first output voltage (V1), select a first source first regulator to input Vfirst source and provide V1; responsive to Vfirst source>a second output voltage (V2), select a first source second voltage regulator that inputs Vfirst source, and provide V2; responsive to Vfirst source?V1, select a second source first voltage regulator that inputs a second source voltage Vsecond source that corresponds to a second source and is substantially constant in time where Vsecond source>V1, and provide V1 independent of the first source first regulator and the first source second voltage regulator. Other embodiments are described and claimed.

Abstract: Described is an apparatus which comprises: an amplifier to receive a reference voltage; and calibration logic which is operable to receive a first voltage and to provide the reference voltage to the amplifier, wherein the calibration logic is operable to generate a look-up table (LUT) that maps the first voltage to a drive current.

Abstract: Described is an apparatus which comprises: a source to generate a first current having AC and DC components; a current-to-voltage converter to convert the first current or a copy of the first current to a first voltage proportional to a resistance, the first voltage having AC and DC components that correspond to the AC and DC components of the first current; a sample-and-hold circuit to filter the AC component from the first voltage and for providing an output voltage with the DC component; and an amplifier to receive the output voltage.

Abstract: A dual mode voltage regulator according to one embodiment includes a passive regulator circuit; a switching regulator circuit; and a controller circuit configured to monitor operational parameters of the dual mode voltage regulator and selectively couple either the passive regulator circuit or the switching regulator circuit between an input voltage port and an output load. The selective coupling is based on the monitoring of parameters including current through the output load, voltage at the input voltage port and voltage at the output load as well as the availability of a system clock signal.

Abstract: A dual mode voltage regulator according to one embodiment includes a passive regulator circuit; a switching regulator circuit; and a controller circuit configured to monitor operational parameters of the dual mode voltage regulator and selectively couple either the passive regulator circuit or the switching regulator circuit between an input voltage port and an output load. The selective coupling is based on the monitoring of parameters including current through the output load, voltage at the input voltage port and voltage at the output load as well as the availability of a system clock signal.