Advanced Micro Devices Corporation

Globalfoundries Inc.

Chris Tressler

Mary Chen

Michael G Drake

Carl Hernandez

Greg Schelling

John Bennett

Edward Guerrero

A thermal protection circuit for high output power supplies. A power supply circuit includes a switching control circuit coupled to a switching regulator circuit. The switching control circuit is configured to generate a plurality of switching control signals for controlling the switching regulator circuit. The power supply circuit also includes a temperature sensitive circuit which includes a thermistor. The temperature sensitive circuit is configured to provide a variable voltage level output to the phase control circuit. The switching control circuit is also configured to suspend operation of the switching regulator circuit upon detecting a predetermined voltage level at the output.

System for suspending operation of a switching regulator circuit in a power supply if the temperature of the switching regulator is too high

A printed circuit board assembly with improved bypass decoupling for BGA packages. In one embodiment, a capacitor may be interposed between a BGA package and a PCB within a perimeter of the contact pads that form a BGA footprint. The capacitor may have physical dimensions which allow a BGA package to be mounted such that there is no physical contact between the capacitor and the BGA.

Printed circuit board assembly with improved bypass decoupling for BGA packages

A multiphase power supply that minimizes losses during a low power mode&plus;. In a particular embodiment, a multiphase power supply may include a plurality of switching regulators coupled in parallel with respect to one another. The multiphase power supply further comprises a phase control circuit coupled to each of the switching regulators. The phase control circuit is configured to generate a plurality of control signals for controlling the switching of the switching regulators so that they are out of phase with respect to one another. During the low power mode of operation of the microprocessor, the phase control circuit is configured to selectively suspend operation of a subset of switching regulators by removing or disabling at least one of the plurality of control signals to each of the subset of switching regulators.

Efficiency of a multiphase switching power supply during low power mode

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Austin, TX, United States of America

Chris Tressler