摘要:
The invention concerns a system for delivering a voltage to at least one power domain (2.11-2. nz) comprising at least one component, each power domain functioning according to at least two operating points, each operating point defining a required supply voltage, the required supply voltages of the operating points of a given power domain being distinct in pairs. The system comprises at least a first and a second power supply units (1.10-1.n0), each supply unit being adapted to deliver a controllable supply voltage and the at least one power domain comprises at least one first power domain (2.1 x; 2.2y; 2.nz), which is arranged to be alternatively connected to the first or to the second power supply unit. The system further comprises a control unit (5) arranged to select, among the first and second power supply units, a current power supply unit to be connected to the first power domain, the current power supply unit being selected based on a current operating point of the first power domain, the control unit being further arranged to control the controllable supply voltage delivered by the current power supply unit to deliver the required voltage level associated with the current operating point of the first power domain.
摘要:
This document discusses, among other things, a method for a portable electronic device comprising measuring a temperature of the portable electronic device and switching a power path for the portable electronic device from an external power source to an internal power pack, such as a battery, based on the temperature of the portable electronic device.
摘要:
An apparatus for supplying power to a load. The apparatus including a plurality of sources to provide charge, and a controller adapted to control a transfer of charge from the sources to the load at distinct times. The controller may control the transfer of charge based on variation of an ambient condition or a manufacturing process. The controller may control the transfer of charge to generate a defined voltage across the load. The apparatus may include a regulator adapted to regulate a voltage across the load. The regulator may regulate the voltage across the load in a defined timing relationship with the transfer of charge from the sources to the load.
摘要:
A power supply device that switches one of a first power supply, a second power supply, and a third power supply, all of which supply power to an auxiliary device, to a transfer gate in a CMOS image sensor having a photodiode and outputs the corresponding power to the transfer gate is disclosed. The device includes: a first transistor driven by the second power supply and outputting power of the second power supply to the transfer gate; a second transistor driven by the second power supply and outputting power of the first power supply to the transfer gate; a third transistor driven by the third power supply and outputting power of the third power supply to the transfer gate; and a fourth transistor located before the second transistor, driven by the first power supply, and outputting power of the first power supply to a source of the second transistor.
摘要:
In an electric power system with a distributed power source, a fluctuation of its system voltage is brought about by an amount of power generation of the distributed power source that depends on weather. Stabilization of the system voltage is realized by generating a driving signal of a switch that the system has from weather forecast information and power system information and switching a configuration of the system.
摘要:
A power supply source selection circuit is provided with a comparator and a switch. The comparator has an input to accept a first reference voltage directly proportional to a bandgap reference voltage. For example, the bandgap voltage may be derived from a battery voltage. The comparator has an input to accept a second reference voltage directly proportional to a first supply voltage (e.g., a line voltage), and an output to supply a switch signal in response to comparing the second reference voltage to the first reference voltage. The switch has an input to accept the first supply voltage, an input to accept a second supply voltage, and input to accept the switch signal. The switch has an output to supply a third supply voltage to a regulator. The third voltage has a voltage potential less than or equal to a maximum voltage value. The switch selects between the first supply voltage and the second supply voltage in response to the switch signal.
摘要:
A solid state circuit breaker includes a first terminal; a second terminal; a first wide-band gap field effect transistor coupled to the first terminal; a second wide-band gap field effect transistor coupled to the second terminal, wherein the first wide-band gap field effect transistor and the second wide-band gap field effect transistor are common-source connected to one another; and a bi-directional snubber device coupled to the first wide-band gap field effect transistor and the second wide-band gap field effect transistor. Such a solid state circuit breaker may also include a gate drive circuit coupled to the first wide-band gap field effect transistor and the second wide-band gap field effect transistor, where the gate drive circuit may comprise a voltage regulation stage and a drive stage.
摘要:
A vehicle includes a mobile electric power generation system including a mobile power source such as a generator. An external power interface is included to connect to an external electrical power source. An AC electric power distribution bus is included to power electric loads of the vehicle and a power switch device is provided to selectively provide AC electric power on the power distribution bus from one of the respective power sources with a default to select one of the sources whenever it is present.
摘要:
A line switching system is a line switching system which switches line of a power supply system including: a plurality of PV panels which generate power using renewable energy; at least one PCS which conditions supplied power to output the conditioned power to a power system; and a first switch which connects any one of the PV panels and the PCS, wherein the line switching system includes a display device which displays an image corresponding to the power supply system and receives an operation on the image from the user, and a control unit which is configured to switch between conduction and non-conduction between a plurality of PV panels and the PCS by controlling the first switch according to the operation received by the display device.
摘要:
A power supply device that switches one of a first power supply, a second power supply, and a third power supply, all of which supply power to an auxiliary device, to a transfer gate in a CMOS image sensor having a photodiode and outputs the corresponding power to the transfer gate is disclosed. The device includes: a first transistor driven by the second power supply and outputting power of the second power supply to the transfer gate; a second transistor driven by the second power supply and outputting power of the first power supply to the transfer gate; a third transistor driven by the third power supply and outputting power of the third power supply to the transfer gate; and a fourth transistor located before the second transistor, driven by the first power supply, and outputting power of the first power supply to a source of the second transistor.