Maxim Integrated Products, Inc.

Antonio Panebianco

Salvatore Giovanni Pastorina

Gaoling Zou

Yangyang Wen

Qicheng Huang

Antonio Magazzu′

Harrison Zhang

Gaetano Maria Walter Petrina

A powered device interface includes a supply sensing circuit, a demand sensing circuit, and a control circuit. The supply sensing circuit is configured to sense an amount of power received by the powered device from at least one power source equipment over an ethernet cable. The demand sensing circuit is configured to sense a power demand requested by the powered device. The control circuit is coupled with the supply sensing circuit and the demand sensing circuit and is configured to cause the power demand requested by the powered device to be reduced when the power demand requested by the powered device exceeds the amount of power allowed by the power source equipment for the powered device.

Power control of powered devices in a system with power over the ethernet

Various embodiments of the invention provide for a double measurement technique to enable auto-calibration of a switching regulator. In certain embodiments, calibration is performed using a digital conversion circuit that adjusts an internal slope of an on-time generator by adjusting the peak value of a ramp to a desired peak voltage value. Auto-calibration allows for an optimal dynamic response across the entire switching frequency range of the switching regulator even in noisy environments.

Systems and methods to calibrate switching regulators

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Aci S. Antonio, Italy

Antonio Panebianco