Abstract: An information handling system includes a power supply and a baseboard management controller. The power supply determines a first maximum output power level, determines that an environmental condition of the power supply has changed, determines a second maximum output power level different from the first maximum output power level based upon the changed environmental condition, and stores the second maximum output power level to a first register of the power supply. The baseboard management controller sets a power level demanded by a load of the information handling system to be within the first maximum output power level, reads the first register, and sets the power level demanded by the load to be within the second maximum output power level in response to reading the register.

Abstract: According to one embodiment, an adjustable power capacity Power Supply Unit (PSU) includes a circuit coupled within a feedback loop of the PSU that is controlled by an internal processing system. The feedback loop configured to carry a feedback signal for regulating an output power of the PSU. The processing system includes executable instructions that may be executed to receive an output power capacity set point that represents a programmed output power rating of the PSU, and control the circuit to modify the feedback signal so that the PSU generates output power at the programmed output power rating. The programmed output power rating set on the PSU being less than an actual output power rating of the PSU.

Abstract: An information handling system includes a power supply unit having a power train configured to convert electrical energy received by the power supply unit into electrical energy usable by the information handling system and a microcontroller that includes non-volatile memory holding a line status register. The microcontroller is configured to set or reset the power supply unit for high line only operation, and the information handling system is configured to notify the power supply unit microcontroller to set or reset the power supply unit for high line only operation.

Abstract: A system for controlling voltage operation of a power supply unit (PSU) for an information handling system. If the PSU is established as a High-Line power supply and is a dual wattage unit, Low-Line capabilities are disabled and the PSU turns off if power drops below a High-Line minimum voltage. If the PSU is established as a Low-Line PSU or is not dual wattage unit, the PSU is maintained in a current operational state and is either reset or turned off before making changes.

Abstract: In one or more embodiments, one or more systems, methods, and/or processes may: receiving, by a first circuit of an inductor-inductor-capacitor (LLC) converter, a pulse width modulation (PWM) signal to control a gate of a metal-oxide-semiconductor field-effect transistor (MOSFET) of a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs) of the LLC converter; provide, by the first circuit, current to a transformer based at least on amplifications of the PWM by at least one of the plurality of power MOSFETs; determine, by the second circuit, if a voltage value associated with a drain of the power MOSFET is above a threshold voltage value; if so, suppress, by the second circuit, the PWM signal to the gate of the power MOSFET; and if not, permit, by the second circuit, the PWM signal to the gate of the power MOSFET.

Abstract: An information handling system includes a power supply and a baseboard management controller (BMC). The power supply includes an input power monitor module and a communication interface. The input power monitor module is configured to detect a total harmonic distortion (THD) on a power input to the power supply, to determine that the THD is greater than a THD threshold, and to provide an indication that the THD is greater than the THD threshold on the communication interface. The BMC is coupled to the communication interface, and is configured to receive the first indication and to enter an item into a log of the information handling system in response to receiving the indication.

Abstract: In one or more embodiments, one or more systems, methods, and/or processes may: receiving, by a first circuit of an inductor-inductor-capacitor (LLC) converter, a pulse width modulation (PWM) signal to control a gate of a metal-oxide-semiconductor field-effect transistor (MOSFET) of a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs) of the LLC converter; provide, by the first circuit, current to a transformer based at least on amplifications of the PWM by at least one of the plurality of power MOSFETs; determine, by the second circuit, if a voltage value associated with a drain of the power MOSFET is above a threshold voltage value; if so, suppress, by the second circuit, the PWM signal to the gate of the power MOSFET; and if not, permit, by the second circuit, the PWM signal to the gate of the power MOSFET.

Abstract: An information handling system has power supply units (PSUs), each of which includes an input over current warning (OCW) setting that provides a reference for an amount of an input current drawn by a corresponding workload. Each of the PSUs sends an interrupt to a baseboard management controller (BMC) when the amount of the input current drawn by the corresponding workload exceeds the corresponding configured input OCW setting. In response to the received interrupt, the BMC requests an adjustment to the corresponding workload.

Abstract: An information handling system has power supply units (PSUs), each of which includes an input over current warning (OCW) setting that provides a reference for an amount of an input current drawn by a corresponding workload. Each of the PSUs sends an interrupt to a baseboard management controller (BMC) when the amount of the input current drawn by the corresponding workload exceeds the corresponding configured input OCW setting. In response to the received interrupt, the BMC requests an adjustment to the corresponding workload.

Abstract: An information handling system includes a power supply and a baseboard management controller (BMC). The power supply includes an input power monitor module and a communication interface. The input power monitor module is configured to detect a total harmonic distortion (THD) on a power input to the power supply, to determine that the THD is greater than a THD threshold, and to provide an indication that the THD is greater than the THD threshold on the communication interface. The BMC is coupled to the communication interface, and is configured to receive the first indication and to enter an item into a log of the information handling system in response to receiving the indication.

Abstract: Systems and methods for managing the operation of Power Supply Units (PSUs) are described. In some embodiments, a method may include: identifying a mismatch between a first Power Supply Unit (PSU) and a second PSU in an Information Handling System (IHS), disabling the first PSU, determining that a voltage at an input line of the first PSU follows a predetermined pattern while the first PSU receives a secondary bias from the second PSU, and enabling the first PSU.

Abstract: Systems and methods for managing the operation of Power Supply Units (PSUs) are described. In some embodiments, a method may include: identifying a mismatch between a first Power Supply Unit (PSU) and a second PSU in an Information Handling System (IHS), disabling the first PSU, determining that a voltage at an input line of the first PSU follows a predetermined pattern while the first PSU receives a secondary bias from the second PSU, and enabling the first PSU.

Abstract: A system may implement a method for determining the operating capability of a power supply based on multiple environmental factors. Information about environmental factors may be obtained from sensors in the power supply or received from a management controller. These environmental factors may include temperature, line voltage, backpressure, or altitude. A power supply capability analyzer within the power supply may determine that, based on the environmental conditions, it is safe to increase the operating capability of the power supply, or that the operating capability of the power supply should be decreased. After determining the best operating capability for the power supply, it may be communicated to the management controller, after which it may affect the allocation of power in the system. Similar adjustments in operating capabilities may be made for all power supplies in a system or adjustments may be made to individual power supplies based on local environmental conditions.

Abstract: A system may implement a method for determining the operating capability of a power supply based on multiple environmental factors. Information about environmental factors may be obtained from sensors in the power supply or received from a management controller. These environmental factors may include temperature, line voltage, backpressure, or altitude. A power supply capability analyzer within the power supply may determine that, based on the environmental conditions, it is safe to increase the operating capability of the power supply, or that the operating capability of the power supply should be decreased. After determining the best operating capability for the power supply, it may be communicated to the management controller, after which it may affect the allocation of power in the system. Similar adjustments in operating capabilities may be made for all power supplies in a system or adjustments may be made to individual power supplies based on local environmental conditions.

Abstract: In accordance with embodiments of the present disclosure, a power supply unit may include one or more stages including an output stage configured to generate a direct-current output voltage at an output of the power supply, an OR-ing metal-oxide-semiconductor field effect transistor (MOSFET) coupled between the output stage and the output, and a controller. The controller may be configured to measure a signal indicative of a voltage associated with the OR-ing MOSFET and determine an estimated output current of the power supply based on the signal.

Abstract: In accordance with embodiments of the present disclosure, a power supply unit may include one or more stages including an output stage configured to generate a direct-current output voltage at an output of the power supply, an OR-ing metal-oxide-semiconductor field effect transistor (MOSFET) coupled between the output stage and the output, and a controller. The controller may be configured to measure a signal indicative of a voltage associated with the OR-ing MOSFET and determine an estimated output current of the power supply based on the signal.

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 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: An AC transfer switch is provided for switching between a first line cord and a second line cord. The AC transfer switch is designed to be fault tolerant and ensures that continuous operating power is supplied to a load during the transfer process. The system includes a first input from a first power line cord, a second input from a second power line cord, a switch for switching an output between the first and second power line cord, wherein the switch further includes a first contactor set for selecting the first line cord and a second contactor set for selecting the second line cord, the first and second contactor sets including two contactors in series and a control circuit for controlling the switch to select between the first and second power line cords.