A technique for managing undervoltage in a compute system is disclosed. The technique includes a method that further includes: detecting an AC undervoltage condition in the compute system; and upon detecting the AC undervoltage condition: dynamically determining a holdup time as a function of the present load; determining a monitoring period as a function of the dynamically determined holdup time; waiting for the determined monitoring period to expire; and upon expiration of the determined monitoring period, perform a shutdown process if the AC undervoltage condition persists.

A system-on-a-chip (“SoC”) in a computing device may be provided with a power delivery network (“PDN”) self-test to detect marginal PDN performance. In the self-test, a current surge may be generated on power supply connections of logic circuit blocks. Voltage monitors may measure voltage droop on the power supply connections responsive to the current surge. Voltage droop measurements may be compared with thresholds. An action, such as generation of an alert, may be performed if a voltage droop measurement exceeds a threshold.

In controlling power in a portable computing device (“PCD”), a power supply input to a PCD subsystem may be modulated with a modulation signal when an over-current condition is detected. Detection of the modulation signal may indicate to a processing core of the subsystem to reduce its processing load. Compensation for the modulation signal in the power supply input may be applied so that the processing core is essentially unaffected by the modulation signal.

Embodiments of systems and methods for power demand management are described herein. More specifically, embodiments comprise systems and methods for powering, controlling, and/or operating various types of controllable load for integration with power fluctuations from intermittent power generation plants, such as photovoltaic arrays and wind turbine farms.

A method for handling input/output (I/O) expansion power faults in a telematics device is provided. The method includes setting an I/O expander power-off duration to an initial value and powering on an I/O expander interface. In response to detecting a power fault at the I/O expander interface, the I/O expander interface is powered-off dur the power-off duration and the power-off duration is increased. If the power-off duration is greater than the power-off duration limit, the I/O expander interface is permanently powered-off. The steps are repeated until either the power fault does not recur, or the I/O expander interface is permanently powered-off.

Data may be transferred from a volatile memory to a non-volatile memory using a persistent power enabled on-chip data processor upon detecting a power loss from a primary power source. The one or more emergency power supplies are attached to the volatile memory, the non-volatile memory, and the persistent power enabled on-chip data processor to assist with the transferring of data.

One embodiment provides a system and method for reshaping the power budget of a cabinet to facilitate an improved deployment density of servers. A battery cabinet comprises: a plurality of sealed batteries; a power outlet; and a power management module coupled to the sealed batteries and the power outlet. The power management module comprises: a power monitoring module configured to monitor a first amount of power consumed by one or more computing devices via a main power supply; a detection module configured to detect that the first amount of power consumption exceeds a predetermined power consumption threshold; and a power provision module configured to provide, via the sealed batteries, power to the power outlet until the first amount of power consumption no longer exceeds the predetermined power consumption threshold.

A power management device and a management method thereof are provided. The power management device includes a switch, a detection circuit and a controller. The switch receives an external power. The detection circuit receives an internal power and at least one operation power. The detection circuit determines whether at least one of the internal power and the operation power is in a preset specification range or not to generate a protection activate signal. The controller sets a protection flag according to the protection activate signal, and generates a control signal according to the protection flag by executing an application program. The controller transmits the control signal to turn off the switch.

A terminal apparatus includes: a communication interface that acquires data output from a data output apparatus and supplies power to the data output apparatus; a storage that writes the data to a medium; a controller that controls the storage; a power supply that supplies power to the storage; and a power receiver that receives power from an external power source and supplies power to the communication interface and the power supply. In response to detecting a power outage and/or a voltage drop of the external power source, the controller controls the communication interface to stop supplying power to the data output apparatus.

Techniques for an on-memory die voltage regulator is disclosed. In the illustrative embodiment, a voltage regulator on a memory die is enabled upon receipt of a memory operation. The illustrative voltage regulator includes an analog controller that controls a shunt current based on a current output voltage of the voltage regulator. The illustrative voltage regulator also includes a digital controller that controls several switches based on the input voltage that control an effective resistance of part of the voltage regulator.