Facebook, Inc.

Mingchun Xu

Michael Timothy Kauffman

Seung Hoon Park

In an embodiment, a system for balancing input current for power supplies a voltage detector configured to detect an input voltage to a power supply of a plurality of different power supplies. The system further includes one or more circuit elements configured to adjust one or more properties of the one or more circuit elements based at least in part on the detected input voltage in an attempt to maintain a consistent current input across the plurality of different power supplies.

Balance input current of power supplies

A control logic firmware is received at a power supply unit. The firmware specifies a configuration selected to place a magnitude of an impedance of the power supply unit above a magnitude of an impedance of a network data center power system. The control logic firmware is executed using a power factor correction circuit of the power supply unit including by setting a voltage loop phase margin of the power factor correction circuit to maintain the magnitude of the impedance of the power supply unit above the magnitude of the impedance of the network data center power system.

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Danville, CA, United States of America

Mingchun Xu