Abstract: In accordance with embodiments of the present disclosure, a battery back-up unit for supplying electrical energy to an information handling resource via a power bus in response to a power event affecting an ability of a power supply unit to deliver electrical energy to the information handling resource via the power bus may be configured to, in response to the power event and prior to the power supply unit ceasing to deliver electrical energy to the power bus monitor a current share bus having a current share signal driven at least in part by the power supply unit, the current share signal indicative of a first current driven by the power supply unit to the power bus, drive a second current to the power bus in accordance with the current share signal, and refrain from driving the current share bus.

Abstract: A method that budgets power allocation for an information handling system (IHS) includes: in response to determining that the IHS is to be powered by a redundant configuration of PSUs, budgeting a first amount of power that is less than a maximum power that can be utilized by the system, and configuring the system to autonomously utilize unused operating margin of the secondary PSU(s) in a redundant configuration of the PSUs during periods in which the system requires greater than the first amount of power; and in response to the information handling system not being powered by a redundant configuration of multiple PSUs, budgeting a second amount of power for the system that is at least equal to the maximum power that can be utilized by the system and is within the output of the primary PSU.

Abstract: An information handling system may include a power management system comprising a power supply unit having an input for receiving an alternating current input waveform from a bulk capacitor for storing charge. The power management system may be configured to calculate an energy budget associated with an amount of energy stored in the bulk capacitor that may be used to power at least one information handling resource in response to a loss of the alternating current input waveform. The power management system may further be configured to determine a portion of the energy budget required to satisfy a requirement, the requirement comprising one of a hold-up time requirement and a ride-through requirement of the information handling system. The power management system may further be configured to allocate the energy budget between hold-up and ride-through of the information handling system in a manner that satisfies the requirement.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include at least one information handling resource and a controller. The controller may be configured to receive signals from a plurality of power supply units, each signal indicative of a temperature associated with a respective power supply of the plurality of power supply units. The controller may also be configured to determine, for each of the plurality of power supply units, a respective derating limit based on the respective signal indicative of the temperature for such power supply unit. The controller may be further configured to communicate messages to each of the plurality of power supply units, each message indicative of the respective derating limit determined with respect to such power supply unit.

Abstract: A method that budgets power allocation for an information handling system (IHS) includes: in response to determining that the IHS is to be powered by a redundant configuration of PSUs, budgeting a first amount of power that is less than a maximum power that can be utilized by the system, and configuring the system to autonomously utilize unused operating margin of the secondary PSU(s) in a redundant configuration of the PSUs during periods in which the system requires greater than the first amount of power; and in response to the information handling system not being powered by a redundant configuration of multiple PSUs, budgeting a second amount of power for the system that is at least equal to the maximum power that can be utilized by the system and is within the output of the primary PSU.

Abstract: In accordance with embodiments of the present disclosure, a battery back-up unit for supplying electrical energy to an information handling resource via a power bus in response to a power event affecting an ability of a power supply unit to deliver electrical energy to the information handling resource via the power bus may be configured to, in response to the power event and prior to the power supply unit ceasing to deliver electrical energy to the power bus monitor a current share bus having a current share signal driven at least in part by the power supply unit, the current share signal indicative of a first current driven by the power supply unit to the power bus, drive a second current to the power bus in accordance with the current share signal, and refrain from driving the current share bus.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a primary persistent memory comprising a volatile memory for storing data and a non-volatile memory for receiving data transferred from the volatile memory in response to a power loss of the information handling system. The information handling system may also include an alternate persistent memory instructions embodied in non-transitory computer readable media, the instructions for causing a processor communicatively coupled to the primary persistent memory and the alternate persistent memory to, responsive to a vulnerability of a persistence of the primary persistent memory, transfer application data from the primary persistent memory to the alternate persistent memory.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a processor and a management controller communicatively coupled to the processor and configured to, during boot of the information handling system determine a first amount of energy required by the information handling system to perform a save operation to transfer data from a volatile memory to a non-volatile memory of a persistent memory in response to a loss of power for supplying electrical energy to the information handling system, determine whether a second amount of energy available for providing electrical energy for the save operation in response to the loss of power exceeds the first amount of energy, and responsive to determining whether the second amount of energy exceeds the first amount of energy, determine whether to support the persistent memory.

Abstract: In accordance with embodiments of the present disclosure, a method may include, during boot of an information handling system, determining a first amount of energy required by the information handling system to flush a cache integral to the information handling system to memory integral to the information handling system in response to a power loss of one or more power supplies for supplying electrical energy to the information handling system, determining whether a second amount of energy available for hold-up of one or more power supplies in response to the power loss exceeds the first amount of energy, and responsive to determining whether the second amount of energy exceeds the first amount of energy, configuring the cache.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a power supply unit having an input for receiving an alternating current input waveform and converting it into a direct current waveform on a bulk capacitor for storing charge and a controller configured to, based on at least one parameter of one or more information handling resources of the information handling system, determine a configurable under-voltage threshold defining a minimum direct current voltage delivered by the power supply when the alternating current input waveform is withdrawn.

Abstract: An information handling system may include a power management system comprising a power supply unit having an input for receiving an alternating current input waveform from a bulk capacitor for storing charge. The power management system may be configured to calculate an energy budget associated with an amount of energy stored in the bulk capacitor that may be used to power at least one information handling resource in response to a loss of the alternating current input waveform. The power management system may further be configured to determine a portion of the energy budget required to satisfy a requirement, the requirement comprising one of a hold-up time requirement and a ride-through requirement of the information handling system. The power management system may further be configured to allocate the energy budget between hold-up and ride-through of the information handling system in a manner that satisfies the requirement.

Abstract: A computer-implemented method dynamically limits peak power consumption in processing nodes of an IHS. A power management micro-controller receives processing node-level power-usage and workload data from several node controllers, including current power consumption and a current workload, for each processing node within the IHS. A total available system power of the IHS is identified including a peak power output capacity and a sustained output power capacity. At least one node peak power threshold is determined based on the power-usage and workload data for each of the processing nodes. The node controllers are triggered to determine and set a device peak power limit for each of several variable performance devices within each of the processing nodes based on the node peak power threshold, wherein each of the variable performance devices dynamically adjusts a value of a corresponding device performance metric based on the device peak power limit.

Abstract: A method for allocating power within an information handling system (IHS) includes: monitoring power consumed by components within the IHS; monitoring thermal state of the components; evaluating power demand and cooling demand for each of the components; and adjusting power allocated to at least one of a computing resource and system cooling according to results of the evaluating. An information handling system (IHS) and a controller that both perform similar processes are disclosed.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include at least one information handling resource and a controller. The controller may be configured to receive signals from a plurality of power supply units, each signal indicative of a temperature associated with a respective power supply of the plurality of power supply units. The controller may also be configured to determine, for each of the plurality of power supply units, a respective derating limit based on the respective signal indicative of the temperature for such power supply unit. The controller may be further configured to communicate messages to each of the plurality of power supply units, each message indicative of the respective derating limit determined with respect to such power supply unit.

Abstract: A baseboard management control subsystem may determine a fan speed value associated with a fan speed used to cool a particular hardware configuration of an information handling system. The baseboard management control subsystem may further determine a power value associated with a power consumed by a fan running at the determined fan speed value. The baseboard management system may manage power within the information handling system based on the determined fan speed value and the determined power value.

Abstract: In accordance with embodiments of the present disclosure, a power supply unit may comprise a plurality of output terminals configured to supply electrical energy to one or more information handling resources, a measurement module configured to measure one or more parameters indicative of an intermediate impedance between the power supply unit and at least one other power supply unit, and a microcontroller unit. The microcontroller unit may be configured to estimate an intermediate impedance based on the one or more parameters and communicate the intermediate impedance to a controller of an information handling system in which the power supply unit is disposed.

Abstract: A power controller of an information handling system (IHS) controls power allocation for the IHS with components that intermittently exhibit power transients. The power controller is configured to: identify an enhanced power state during which a maximum power required by the information handling system is greater than the amount of power provided by a primary PSU of a redundant configuration of PSUs; and allocate a portion of the unused operating margin of backup reserve power from the redundant PSUs to support intermittent power transients that occur during enhanced power state operation. The power controller is further configured to, in response to a detection of a condition that reduces an amount of unused operating margin of backup reserve power to less than an amount of additional power required to support the intermittent power transients, autonomously disable/limit the enhanced power state to prevent/limit an occurrence or magnitude of the intermittent power transients.

Abstract: A computer-implemented method enables determining an input power load for a multi voltage rail subsystem in an electronic device such as an information handing system. The method comprises determining a first output power value from a first voltage regulator and a second output power value from a second voltage regulator. A first input power value to the first voltage regulator is determined based at least partially on the first output power value and a second input power value to the second voltage regulator is determined based at least partially on the second output power value. An offset power value is calculated based on the first input power value and the second input power value. A total input power value is calculated based on the offset power value and a third input power value. The total input power value is transmitted to a processor.

Abstract: A power controller of an information handling system (IHS) controls power allocation for the IHS with components that intermittently exhibit power transients. The power controller is configured to: identify an enhanced power state during which a maximum power required by the information handling system is greater than the amount of power provided by a primary PSU of a redundant configuration of PSUs; and allocate a portion of the unused operating margin of backup reserve power from the redundant PSUs to support intermittent power transients that occur during enhanced power state operation. The power controller is further configured to, in response to a detection of a condition that reduces an amount of unused operating margin of backup reserve power to less than an amount of additional power required to support the intermittent power transients, autonomously disable/limit the enhanced power state to prevent/limit an occurrence or magnitude of the intermittent power transients.

Abstract: A method that budgets power allocation for an information handling system (IHS) includes: in response to determining that the IHS is to be powered by a redundant configuration of PSUs, budgeting a first amount of power that is less than a maximum power that can be utilized by the system, and configuring the system to autonomously utilize unused operating margin of the secondary PSU(s) in a redundant configuration of the PSUs during periods in which the system requires greater than the first amount of power; and in response to the information handling system not being powered by a redundant configuration of multiple PSUs, budgeting a second amount of power for the system that is at least equal to the maximum power that can be utilized by the system and is within the output of the primary PSU.