Intel Corporation

Uday Bhaskar Kadali

Ramnarayanan Ram Muthukaruppan

Pradipta Patra

Harish Krishnamurthy

Mohit Verma

Gaurav Goel

Pradyumna Agashe

Jnaneshwar Madugonda

Described is a voltage regulator with adaptive gain, which comprises: a plurality of power-gate transistors controllable by a digital bus, the plurality of power-gate transistors operable to provide a first power supply to a load, and to receive a second power supply as input; an analog-to-digital converter (ADC) to receive the first power supply and to generate a digital output representative of the first power supply; and a controller to receive the digital output representative of the first power supply and to generate the digital bus for controlling the plurality of power-gate transistors such that a transfer function of the plurality of power-gate transistors is substantially linear over an operating range.

Digital synthesizable low dropout regulator with adaptive gain

Described is an apparatus comprising: first and second processing cores; and a PCU which is operable to: generate a first VID for an off-die regulator external to the apparatus, the first VID resulting in a first power supply for the first processing core; and generate a second VID different from the first VID, the second VID resulting in a second power supply for the second processing core. Described is an apparatus comprising: a plurality of power-gate transistors controllable by a digital bus, the plurality of power-gate transistors operable to provide a first power supply to a processing core, and to receive a second power supply as input; an ADC to receive the first power supply and to generate a digital output representative of the first power supply; and a controller to receive the digital output representative and to generate the digital bus for controlling the plurality of power-gate transistors.

Multiple voltage identification (VID) power architecture, a digital synthesizable low dropout regulator, and apparatus for improving reliability of power gates

Methods and systems to regulate a voltage with multiple selectable voltage regulator (VR) modes, using multiple corresponding circuits and/or a configurable circuit. The circuit may be configurable for one or more of a power-gate VR mode, a switched-capacitor VR (SCVR) mode, and a linear mode, such as a low drop-out (LDO) VR mode. A feedback controller, such as a proportional-integral-derivative (PID) controller, may configure and/or control a multi-mode VR for a selected VR mode. The feedback controller may select a VR mode based on a reference voltage and voltage ranges associated with the VR modes. The circuit may be configurable as banks of VRs, and the controller may be implemented to transition between VR modes by switching sub-banks between modes until the transition is complete.

Multi-mode voltage regulation with feedback

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Bengaluru, India

Uday Bhaskar Kadali