Advanced Micro Devices Corporation

Christopher Eric Tressler

Edward C Guerrero, Jr

Samuel D Naffziger

Barry K Kates

Steven Frederick Liepe

Michael J Austin

Sriram Sambamurthy

Aaron Joseph Grenat

Krishna Sai Bernucho

Andrew W Steinbach

Umair B Cheema

Ashwin Chincholi

John David Schell

Joseph P Shannon

Robert A Hershberger

Sho-Chien Kang

Adam Thomas Snider

A processing system includes one or more power supply monitors (PSMs) to measure one or more first voltages corresponding to one or more locations in the processing system. The measurements are performed concurrently with the processing system executing one or more code loops. The processing system also includes calibration logic to modify a second voltage provided to the processing system based on a comparison of a reference voltage and the one or more first voltages. The reference voltage is determined based on previous execution of the one or more code loops by the processing system.

Calibrating power supply voltages using reference measurements from code loop executions

A clamping circuit and method for use in a computer system are provided. In the computer system, a voltage regulator supplies a voltage rail to various components in the system. This voltage rail may be susceptible to voltage spikes or other over-voltage conditions, such as when the voltage rail provides the input voltage to a switching regulator. The clamping circuit comprises a detecting stage and a clamping stage. The detecting stage detects when the voltage rail increases beyond a first voltage level. If this increase is detected, the detecting stage activates the clamping stage, which begins reducing the voltage rail. Once the voltage rail decreases beneath the first voltage level, the detecting stage stops activating the clamping stage. In this way, the clamping circuit protects the computer system from voltage spikes on the voltage rail.

Clamping circuit for use in computer system

A voltage-dependent impedance selector compensates for non-linearities that arise when the operating voltage of an electronic circuit changes. The voltage-dependent impedance selector includes a selection stage that selects a impedance based on the operating voltage of the electronic circuit. The selected impedance is connected to an output stage having a resistive value so that the selected impedance and the output stage form a voltage divider. The voltage-dependent impedance selector may, in some embodiments, be used in reference voltage generation or in impedance matching.

Voltage-dependent impedance selector for non-linearity compensation

An improved method of preventing computer malfunction during a change of power consumption states is disclosed. The computer operates a microprocessor at a specified voltage during a normal operation. To offset the normal decrease in voltage due to an instantaneous increase in power requirements during a change of power consumption states, the specified voltage is increased prior to entering a higher power consumption state such that the voltage level remains within minimum operating limits.

Method of preventing computer malfunction during a change of power consumption states via dynamic adjustment of core voltage

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Austin, TX, United States of America

Christopher Eric Tressler