Other

Intel Corporation

Rose Wang

James T Doyle

Malay Trivedi

Brent D Thomas

Vijayakumaran Velayudhan Nair

Jeongjin Roh

Jiang Chen

Jiang William

In general, in one aspect, the disclosure describes a high-speed multi-phase voltage regulator (VR) capable of sensing load current. For each phase leg, the VR includes a current mirror to mirror current in switching elements, a current sense to sense high side current in the current mirror, and a I-V converter to convert the sensed high side current to a voltage. The high side sensed current for each phase leg is averaged and the duty cycle for the VR is extracted. The average high side sensed current and the duty cycle are converted to digital by an A-D converter. Digital circuitry corrects the sensed current by adjusting for the gain and offset voltage of the VR. The adjusted sensed value is divided by the duty cycle to convert to load current and the average load current is multiplied by the number of phases operating to determine overall load current.

High speed voltage regulator with integrated loseless current sensing

An analog to digital converter may achieve an output sampling rate that is not an integer multiple of the system clock. This may be done without using the conventional phase-locked loop circuit that generally requires a longer design time, more testing, and more silicon area. A pseudo clock may be generated from the system clock in which some of the system clock pulses are disabled to achieve a pseudo clock with the desired effective frequency.

Developing a desired output sampling rate for oversampled converters

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Chandler, AZ, United States of America

Rose Wang