An apparatus is disclosed for operating a charge pump in a high-efficiency low-ripple burst mode. In an example aspect, the apparatus includes a charge pump with a flying capacitor, a switching circuit, and a burst-mode controller. The switching circuit is coupled to the flying capacitor and configured to selectively: be in a burst configuration to charge and discharge the flying capacitor based on a clock signal; or be in a pulse-skipping configuration. The burst-mode controller is coupled to the switching circuit and configured to trigger the switching circuit to transition from the pulse-skipping configuration to the burst configuration at a time that occurs between rising edges of the clock signal. The burst-mode controller is also configured to cause charging of the flying capacitor to occur for approximately half a period of the clock signal responsive to triggering the switching circuit to transition from the pulse-skipping configuration to the burst configuration.

A rated power supply system powered by PoE receives power from external power sources and supplies power to PDs. The system connects with PDs through PoE output interfaces. The system has a PoE analog controller to turn on/off of the output power of all the PoE output interfaces. The PoE analog controller also detects the output current of all the PoE output interfaces. The system has a packet switch controller, a power state detecting circuit and a voltage conversion circuit. The voltage conversion circuit merges the power received from external power sources to generate a first voltage. The CPU calculates an output current upper limit based on the first voltage. The CPU gets a total output current from the PoE analog controller. If the total output current exceeds the output current upper limit, the CPU will turn off the PoE output interfaces according to power output priorities of the PoE output interfaces.

A mobile terminal, an on-the-go (OTG) control and configuration method, and a storage medium, wherein the method includes: obtaining an accumulated number of changes of differences in voltages of at least one of a positive data line and a negative data line in an OTG data cable at intervals; according to the accumulated number of changes of the differences in the voltages of at least one of the positive data line and the negative data line in the OTG cable, querying a lookup table pre-stored in the mobile terminal for a current value corresponding to the number of changes; and according to the queried current value, controlling the mobile terminal to set the current value as a current limit for an OTG peripheral device.

Methods and system support use of peripheral devices by workspaces operating on an Information Handling System (IHS), where the workspaces operate in isolation from the hardware and other software of the IHS. Workspaces are thus unable to interface with hardware coupled to the IHS, including peripheral devices coupled to the IHS. In embodiments, workspace issue request for use of a remote operation supported by a peripheral device. A handle is then provided for invoking the remote operation supported by the peripheral device and for providing the workspace with exclusive use of the peripheral device for the duration of a validity of the handle. One the handle is used to invoke the remote operation supported by the peripheral device, the workspace is provided with output from the remote operation conducted during exclusive use of the peripheral device by the workspace.

Described are mechanisms and methods for implementing highly configurable power delivery management policies. An apparatus may comprise a first circuitry, a second circuitry, a third circuitry, and a fourth circuitry. The first circuitry may include a memory to store a first table having one or more first entries and to store a second table having one or more respectively corresponding second entries. The second circuitry may, upon the occurrence of an event, test a condition specified by an entry in the first table. The third circuitry may, upon the test of the condition having a positive result, evaluate a set of one or more parameters as specified by an entry in a second table corresponding with the entry in the first table. The fourth circuitry may initiate a power-management action based upon the evaluation of the set of one or more parameters.

A power adapter includes an universal serial bus (USB) interface, a control unit and a charging circuit. The universal serial bus (USB) interface connected to the electronic device, to receive level signals from the electronic device. The control unit electronically connected to the USB interface, to output a control signal according to the level signals received by the USB interface. The charging circuit electronically connected to the control unit and receiving the external power signal, to determine whether or not to output the external power signal to the electronic device according to the control signal outputted by the control unit.

According to one embodiment, a memory system includes a volatile memory, a power supply circuit, and a controller. The power supply circuit includes a first power supply path in which power supplied from a host device is supplied to the volatile memory, a second power supply path in which the power is supplied from the internal power supply to the volatile memory, and a switching device that switches between the first power supply path and the second power supply path. In response to an instruction for a transition to a low power consumption mode received from the host device, the controller outputs, to the switching device, an instruction to switch the power supply circuit from the first power supply path to the second power supply path.

A power delivery system includes: an AC-to-DC power supply configured to output initial DC power; a first power delivery unit connected to the power supply and having at least one output port, the first power delivery unit being configured as a DC-to-DC power converter to provide converted DC power through the at least one output port, the converted DC power having a different voltage and/or a different current than the output initial DC power; and a second power delivery unit connected to the power supply or the first power delivery unit through an input port and having at least one output port, the second power delivery unit being configured as a DC-to-DC power converter to provide an output DC power through the at least one output port which has a different voltage and/or a different current than the power received through the input port.

A method comprises providing power from a battery to an external device using a first circuit; and receiving power from a first power source to provide power to the battery using a second circuit while providing power to the external device.

A method includes generating, by a control unit of a first device, a handshaking signal to be transmitted to a second device via a second channel. The method further includes based on the handshaking signal being acknowledged by the second device, configuring, by the control unit, the second channel to communicate non-display data and configuring a first channel connecting the first device to the second device to selectively communicate either display data or non-display data; and based on the handshaking signal being not acknowledged by the second device, configuring, by the control unit, the first channel to communicate display data.