Juniper Networks, Inc.

Prakash B Kamanuri

Siri Subrahmanyam Vadlamani

Jaspal S Gill

A disclosed apparatus may boost internal voltages of power supply units (PSUs) to extend hold-up times. For example, an apparatus may include a PSU and a controller. In one example, the PSU may be configured to convert power from an AC input into a direct current (DC) output and provide the DC output to a computing device. In this example, the controller may be configured to detect a loss of the AC input and extend a hold-up time of the PSU in response to detecting the loss of the AC input by modifying at least one switch included in the PSU. Various other apparatuses, systems, and methods are also disclosed.

Apparatus, system, and method for boosting internal voltages of power supply units to extend hold-up times

A disclosed apparatus may protect power supply units (PSUs) from damage by limiting inrush current. For example, an apparatus may include a PSU and a controller. In one example, the PSU may be configured to convert power from an AC input into a DC output and to provide the DC output to a computing device. In this example, the controller may be configured to limit inrush current originating from the AC input by cycling at least one switch included in the PSU until a DC bulk voltage of the PSU reaches a certain threshold. Various other apparatuses, systems, and methods are also disclosed.

Apparatus, system, and method for protecting power supply units from damage by limiting inrush current

A disclosed apparatus may extend hold-up times for computing devices with redundant power supply units (PSUs). For example, an apparatus may include a plurality of PSUs and a controller. In one example, the PSUs may be configured to convert power from at least one AC input into a direct current (DC) output and to provide the DC output to a computing device. In this example, the controller may be configured to detect a loss of the AC input and a failure of a first PSU included in the plurality of PSUs. The controller may also be configured to extend a hold-up time of a second PSU included in the plurality of PSUs by boosting an undervoltage lockout signal monitored by the computing device in response to detecting the loss of the AC input and the failure of the first PSU. Various other apparatuses, systems, and methods are also disclosed.

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Kalyan Maharashtra, India

Prakash B Kamanuri