Abstract: Embodiments herein describe a switchable redundant voltage regulator (referred to herein as a redundant phase) that can be attached to multiple different power domains. Instead of providing a redundant phase for every load or voltage domain in a computing system, the embodiments herein describe sharing redundant phases between voltage domains. Thus, if a primary phase serving any one of the phase fails, the switch can be controlled to connect the redundant phase to the corresponding voltage domain. In this manner, the redundant phase is a shared phase for a plurality of voltage domains.

Abstract: Method and apparatus for system power supply. A power demand of a system having a first power supply unit (PSU) and a second power supply unit (PSU) is monitored. An efficiency profile of the first PSU is accessed. An efficiency profile of the second PSU is accessed. A load split between the first and second PSUs is generated based on the efficiency profiles of the first and second PSUs and the power demand to increase a power efficiency of the system.

Abstract: A computer-implemented apparatus and related method control a dynamic phase rotation unit of a power distribution unit (PDU). The method comprises using a processor of a system controller for identifying a PDU group of two or more redundant PDUs, receiving input parameters from an input port of each of the PDUs in the PDU group, and comparing the input parameters from of the PDU group. The method further comprises conditioned upon a determination of the following both being true: 1) the input parameters are within a predefined threshold of similarity; and 2) no uninterruptable power supply (UPS) is present, then, responsive to the determination sending, via a network, a phase rotation command to a phase rotation controller to change the phase rotation switches on at least one of the PDUs in the PDU group. Otherwise, responsive to the determination, not sending the phase rotation command.

Abstract: A computer system, computer program product, and computer-implemented method for using reverse currents to self-test multiphase power supply circuits. The method includes executing one or more operations on at least two circuit phases of one or more multiphase power supply circuits. The multiphase power supply circuits include a plurality of circuit phases, and each multiphase power supply circuit is electrically coupled to a plurality of electric power phases. Each circuit phase is coupled to an electric power phase. Executing the operations includes adjusting the voltage on one or more first phases of the plurality of circuit phases to a plurality of voltages, and inducing a reverse current from one or more second phases of the plurality of circuit phases to the one or more first phases.

Abstract: Embodiments for linking separate eFuse and ORING controllers for output overvoltage protection in power conversion applications. Voltage regulators are configured in parallel. An input circuit includes an input controller, the input circuit being coupled to an input of at least one voltage regulator of the voltage regulators. An output circuit includes an output controller, the output circuit being coupled to an output of the at least one voltage regulator. The output controller is coupled to the input circuit to cause the input circuit to prevent power to the at least one voltage regulator in response to the output controller detecting an overvoltage condition.

Abstract: Embodiments include redundant power supplies and method for fault detection in a redundant power supply. Aspects include monitoring a voltage at local output nodes of each phase of the redundant power supply, wherein the local output nodes are each connected to an output bus of the redundant power supply via a feedback path. Aspects also include creating an alert that a phase associated with the local output node has failed based on a determination that the voltage at the local output node is within a fault range.

Abstract: Embodiments for linking separate eFuse and ORING controllers for output overvoltage protection in power conversion applications. Voltage regulators are configured in parallel. An input circuit includes an input controller, the input circuit being coupled to an input of at least one voltage regulator of the voltage regulators. An output circuit includes an output controller, the output circuit being coupled to an output of the at least one voltage regulator. The output controller is coupled to the input circuit to cause the input circuit to prevent power to the at least one voltage regulator in response to the output controller detecting an overvoltage condition.

Abstract: Embodiments include redundant power supplies and method for fault detection in a redundant power supply. Aspects include monitoring a voltage at local output nodes of each phase of the redundant power supply, wherein the local output nodes are each connected to an output bus of the redundant power supply via a feedback path. Aspects also include creating an alert that a phase associated with the local output node has failed based on a determination that the voltage at the local output node is within a fault range.

Abstract: Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switchable circuit connects to the AC voltage supply, and includes multiple switchable elements. The sensor ascertains a voltage level of the AC voltage supply, and the switch control automatically establishes a configuration of the switchable circuit through control of the multiple switchable elements. The switch control couples the electric power device in a line-line (delta) configuration to the AC voltage supply when the voltage level is in a first voltage range, and a line-neutral (wye) configuration when the voltage level is in a second voltage range.

Abstract: Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switchable circuit connects to the AC voltage supply, and includes multiple switchable elements. The sensor ascertains a voltage level of the AC voltage supply, and the switch control automatically establishes a configuration of the switchable circuit through control of the multiple switchable elements. The switch control couples the electric power device in a line-line (delta) configuration to the AC voltage supply when the voltage level is in a first voltage range, and a line-neutral (wye) configuration when the voltage level is in a second voltage range.

Abstract: Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switchable circuit connects to the AC voltage supply, and includes multiple switchable elements. The sensor ascertains a voltage level of the AC voltage supply, and the switch control automatically establishes a configuration of the switchable circuit through control of the multiple switchable elements. The switch control couples the electric power device in a line-line (delta) configuration to the AC voltage supply when the voltage level is in a first voltage range, and a line-neutral (wye) configuration when the voltage level is in a second voltage range.

Abstract: Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switchable circuit connects to the AC voltage supply, and includes multiple switchable elements. The sensor ascertains a voltage level of the AC voltage supply, and the switch control automatically establishes a configuration of the switchable circuit through control of the multiple switchable elements. The switch control couples the electric power device in a line-line (delta) configuration to the AC voltage supply when the voltage level is in a first voltage range, and a line-neutral (wye) configuration when the voltage level is in a second voltage range.

Abstract: Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switchable circuit connects to the AC voltage supply, and includes multiple switchable elements. The sensor ascertains a voltage level of the AC voltage supply, and the switch control automatically establishes a configuration of the switchable circuit through control of the multiple switchable elements. The switch control couples the electric power device in a line-line (delta) configuration to the AC voltage supply when the voltage level is in a first voltage range, and a line-neutral (wye) configuration when the voltage level is in a second voltage range.

Abstract: Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switchable circuit connects to the AC voltage supply, and includes multiple switchable elements. The sensor ascertains a voltage level of the AC voltage supply, and the switch control automatically establishes a configuration of the switchable circuit through control of the multiple switchable elements. The switch control couples the electric power device in a line-line (delta) configuration to the AC voltage supply when the voltage level is in a first voltage range, and a line-neutral (wye) configuration when the voltage level is in a second voltage range.

Abstract: Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switchable circuit connects to the AC voltage supply, and includes multiple switchable elements. The sensor ascertains a voltage level of the AC voltage supply, and the switch control automatically establishes a configuration of the switchable circuit through control of the multiple switchable elements. The switch control couples the electric power device in a line-line (delta) configuration to the AC voltage supply when the voltage level is in a first voltage range, and a line-neutral (wye) configuration when the voltage level is in a second voltage range.