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defining a minimum direct current voltage delivered by the power supply when the alternating current input waveform is withdrawn.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: A method of power supply unit rotating in an information handling system (IHS) may include a control unit dividing a power loading of an IHS into N sections, where N corresponds to a number of power supply units coupled to the IHS. The control unit may configure a first power supply unit to an active state and configure one or more remaining power supply units to a suspended state during a first time period. The control unit may configure the first power supply unit to the suspended state and configure a second power supply unit to the active state in response to a second time period being reached. The control unit may rotate the active state among the power supply units in response to sequential time periods being reached. In an embodiment the control unit may rotate the active state sequentially between each of the subsequent power supplies.

Abstract: An information handling system may include at least one information handling resource and a power supply unit having a bulk capacitor for storing charge. The power supply unit may be configured to convert an alternating current waveform received at an input of the power supply unit from an input source into a direct current voltage for delivering electrical energy to a power bus for providing electrical energy to the at least one information handling resource. Responsive to a loss of the input source, the power supply unit may charge the bulk capacitor from electrical energy present on the power bus and generated by at least one other power supply unit coupled to the power bus. Responsive to an indication of a failure of the at least one other power supply unit, the power supply unit may discharge the bulk capacitor to the power bus.

Abstract: A power supply unit (PSU) performs a PSU fault diagnosis using a PSU fault detection module. The PSU fault detection module detects a diagnostic trigger event and initiates a series of checks of selected sub-systems. The PSU fault detection module determines whether the trigger event occurred while the PSU was connected within an information handling system (IHS) or physically removed from the IHS. If the trigger event occurred while the PSU was connected within an information handling system (IHS), the PSU fault detection module electrically isolates the PSU from the IHS using an ORing device, which blocks current flowing into the PSU. The PSU fault detection module determines whether a short circuit exists within the electrically isolated PSU. If a short circuit is identified, the PSU fault detection module determines that the PSU is not functioning properly and provides a notification of a malfunction of the 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: A method of detecting and disabling a failed power supply in a redundant power supply system is disclosed. The method includes detecting, via a first controller, an output voltage and an output current of a first power supply providing power to the redundant power supply system. The first controller determines if the output voltag0voltage is greater than the maximum output voltage threshold, the first controller determines if the output current is equal to zero. In response to determining that the output current is not equal to zero and not less than a common share bus current, the first power supply is disabled such that the first power supply does not provide power to the power supply system.

Abstract: A power supply system comprises a first power supply including a first converter for providing a first output voltage and a first micro-controller coupled to a first switch. The first switch is coupled to a common share bus. A second power supply includes a second converter for providing a second output voltage and a second micro-controller coupled to a second switch. The second switch is also coupled to the common share bus. The first micro-controller is configured to receive a first control signal designating the first power supply to be either a master power supply or a slave power supply and the second micro-controller is configured to receive a second control signal designating the second power supply to be either the master power supply or the slave power supply.

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 at least one information handling resource and a power supply unit having a bulk capacitor for storing charge. The power supply unit may be configured to convert an alternating current waveform received at an input of the power supply unit from an input source into a direct current voltage for delivering electrical energy to a power bus for providing electrical energy to the at least one information handling resource. Responsive to a loss of the input source, the power supply unit may charge the bulk capacitor from electrical energy present on the power bus and generated by at least one other power supply unit coupled to the power bus. Responsive to an indication of a failure of the at least one other power supply unit, the power supply unit may discharge the bulk capacitor to the power bus.

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 method of power supply unit rotating in an information handling system (IHS) may include a control unit dividing a power loading of an IHS into N sections, where N corresponds to a number of power supply units coupled to the IHS. The control unit may configure a first power supply unit to an active state and configure one or more remaining power supply units to a suspended state during a first time period. The control unit may configure the first power supply unit to the suspended state and configure a second power supply unit to the active state in response to a second time period being reached. The control unit may rotate the active state among the power supply units in response to sequential time periods being reached. In an embodiment the control unit may rotate the active state sequentially between each of the subsequent power supplies.

Abstract: A power excursion tolerant power system includes at least one powered component. A system capacitance and at least one power supply are coupled to the at least one powered component. The at least one power supply is operable as a voltage controlled current source to supply power to the at least one powered component when a system load is below a predetermined threshold. The at least one power supply is operable as a constant current source, and together with the system capacitance, to supply power to the at least one powered component when the system load is above the predetermined threshold. A load reduction mechanism is coupled to the at least one powered component and operable to perform at least one load reduction action when the system load is above the predetermined threshold.

Abstract: A power system may include a subsystem, a capacitor coupled to the subsystem, a resistor coupled in series with the capacitor, and a controller. The subsystem may have an input for receiving a first direct current voltage and an output for generating a second direct current voltage and configured to convert the first direct current voltage into the second direct current voltage. The controller may be configured to receive a first signal indicative of a first current flowing in the capacitor and the resistor, receive a second signal indicative of one of a second current flowing into the input of the subsystem or out of the output of the subsystem, and based on the first signal and the second signal, determine one of an input current provided by a direct current source voltage coupled to the input or an output current delivered to a load coupled to the output.

Abstract: A power system is coupled to a powered system and a system capacitance. The power system includes a power system output sensor, a power conversion device, and a power system output controller. The power system output controller includes a powered system threshold that is related to a power excursion capability of the powered system. The power system output controller is operable, in response to receiving a power system output signal from the power system output sensor that exceeds the powered system threshold, to control the power conversion device to increase the power system output from the power conversion device in order to increase the energy stored in the system capacitance for use by the powered system during a power excursion. The powered system may include processors that draw power from the system capacitance during power excursions so as to not exceed the limits of the power system.

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 excursion tolerant power system includes at least one powered component. A system capacitance and at least one power supply are coupled to the at least one powered component. The at least one power supply is operable as a voltage controlled current source to supply power to the at least one powered component when a system load is below a predetermined threshold. The at least one power supply is operable as a constant current source, and together with the system capacitance, to supply power to the at least one powered component when the system load is above the predetermined threshold. A load reduction mechanism is coupled to the at least one powered component and operable to perform at least one load reduction action when the system load is above the predetermined threshold.

Abstract: An information handling system power supply dynamically adapts thermal and power output protection constraints based upon thermal and power output conditions measured at the power supply. In the event of changing conditions at the information handling system, such as an increase in ambient temperature or an increase in power consumption, a power constraint adaptive module adjusts constraints at which the power supply will shut down in order to maintain power to an information handling system outside of a normal power and thermal constraint operating envelope for the power supply.

Abstract: A power system is coupled to a powered system and a system capacitance. The power system includes a power system output sensor, a power conversion device, and a power system output controller. The power system output controller includes a powered system threshold that is related to a power excursion capability of the powered system. The power system output controller is operable, in response to receiving a power system output signal from the power system output sensor that exceeds the powered system threshold, to control the power conversion device to increase the power system output from the power conversion device in order to increase the energy stored in the system capacitance for use by the powered system during a power excursion. The powered system may include processors that draw power from the system capacitance during power excursions so as to not exceed the limits of the power system.

Abstract: A method, system, and information handling system provides better system power consumption of a redundant power system having a plurality of power supply units (PSUs) by taking into consideration each PSU's sleep power consumption during selection of one or more PSUs to place into a “hot spare” sleep mode. For each PSU, power efficiency data at different load ratings are measured and stored. During the PSU selection, a calculation of system power consumption is conducted on each of several configurations where a different PSU is hypothetically disabled. Each calculation takes into consideration both the sleep power consumption of a disabled PSU and power efficiency data of an enabled PSU. Selection of one or more PSUs to disable is determined according to the configuration yielding the lower or lowest system input power consumption based on the results of the calculations.

Abstract: A supplemental power system includes a powered component, a removable module interface with a plurality of pins, and a plurality of system connections. A system controller detects a first type removable module coupled to the removable module interface and allows signals from the system connections to be transmitted to the first type removable module through the plurality of pins. The system controller detects a second type removable module coupled to the removable module interface and allows power from the second type removable module that is received through the plurality of pins to be transmitted to the powered component while not allowing signals from the system connections to be transmitted to the second type removable module through the plurality of pins. Power that is stored in the second type removable module may be provided to the powered component in response to a detected power excursion by the powered component.