1000results about How to "Reduce standby power consumption" patented technology

System and method for regulating an output voltage of a power conversion system. The system includes a sampling component located on a chip configured to receive an input voltage through a terminal. The sampling component is configured to sample the input voltage and generate a sampled voltage. Additionally, the system includes an error amplifier configured to process information associated with the sampled voltage and a threshold voltage and generate a first output signal, and a first signal generator configured to generate a second output signal and one or more third output signals. Moreover, the system includes a comparator configured to receive the first output signal and the second output signal and generate a comparison signal, and a gate driver directly or indirectly coupled to the comparator and configured to generate a drive signal based on at least information associated with the comparison signal.

The invention discloses a switching power supply for an AC/DC-DC self-adaptive instrument within an ultra-wide voltage input range. The switching power supply comprises an input protective circuit, an EMI filter circuit, a power frequency rectification and filter circuit, a high frequency rectification and filter circuit, a boosting conversion circuit, a flyback conversion circuit, a first voltage sampling circuit, a first current sampling circuit, a second voltage sampling circuit, a second current sampling circuit, a first PWM circuit, a second PWM circuit, an auxiliary power supply circuit, a power switching circuit, a voltage detection and comparison control circuit and an optocoupler isolation feedback circuit. A two-stage type cascade circuit is formed by the boosting conversion circuit and the flyback conversion circuit, and the automatic instrument can automatically adapt to power supply of an 85-265V alternating-current power supply and an 18-100V direct-current power supply.

Power is taken out from radio waves through an antenna and a power receiving unit. A signal receiver, a comparator, and an ID signal holder are operated with the taken-out power to compare an ID contained in a received signal with an ID read out from the ID signal holder. When both the ID's are matched with each other, a switch for a main power source is turned on. In trying to remotely operate household electrical appliances by utilizing the Internet that has become increasingly popular, standby power is consumed if the electrical appliances are kept in a standby state at all times. Since power is taken out from radio waves, the invention is able to cut the standby power in an environment where the radio waves are transferred via radio communication that is expected to be more and more prevalent in future.

A programmable SoC (system on a chip) having optimized power domains and power islands. The SoC is an integrated circuit device including a plurality of power domains, each of the power domains having a respective voltage rail to supply power to the power domain. A plurality of power islands are included within the integrated circuit device, wherein each power domain includes at least one power island. A plurality of functional blocks are included within the integrated circuit device, wherein each power island includes at least one functional block. Each functional block is configured to provide a specific device functionality. The integrated circuit device adjusts power consumption in relation to a requested device functionality by individually turning on or turning off power to a selected one or more power domains, and for each turned on power domain, individually power gating one or more power islands.

Integrated circuit standby power consumption may be reduced using a reverse-bias transistor control arrangement that reduces transistor leakage current. Integrated circuit transistors may be turned off using a reverse bias voltage rather than a ground voltage. A charge pump circuit on the integrated circuit may be used to generate the reverse bias voltage. The reverse bias voltage may also be provided from an external source. The integrated circuit may be a programmable logic device in which logic is configured by providing programming data to configuration cells. The configuration cells may be used to apply either a positive power supply voltage to a given transistor to turn that transistor on or to provide the reverse bias voltage to that transistor to turn that transistor off.

Modified silicon-on-insulator (SOI) substrates having a trap rich layer, and methods for making such modifications. The modified regions eliminate or manage accumulated charge that would otherwise arise because of the interaction of the underlying trap rich layer and active layer devices undergoing transient changes of state, thereby eliminating or mitigating the effects of such accumulated charge on non-RF integrated circuitry fabricated on such substrates. Embodiments retain the beneficial characteristics of SOI substrates with a trap rich layer for RF circuitry requiring high linearity, such as RF switches, while avoiding the problems of a trap rich layer for circuitry that is sensitive to accumulated charge effects caused by the presence of the trap rich layer, such as non-RF analog circuitry and amplifiers (including power amplifiers and low noise amplifiers).

A packet relay device determines a port to be placed on standby in a link aggregation, determines whether there is an active port among ports belonging to redundant network interfaces, and, if a network interface has no active port, places the network interface on standby. The packet relay device monitors whether a failure has occurred in an active network interface and, if a failure is detected, activates a standby network interface and places the failed network interface on standby.

The invention discloses an Internet of Things intelligent control method and an Internet of Things intelligent control system based on user perception. The Internet of Things intelligent control method is characterized in that all users in a target area can be identified, and according to preset user priority levels, the user having the highest priority level is defined as the target user, and then the control parameters corresponding to the target user can be acquired, and the working state of the specified Internet of Things device can be controlled according to the control parameters; the Internet of Things intelligent control system comprises a user perception module, a target user selection module, a control parameter acquisition module, and a device control module. Various Internet of Things devices in the room are provided with the capability of perceiving the users, and can be used to provide the services to the users automatically based on the own responsibilities and functions according to the moving conditions of the users, and then the irrelevant relation between the working conditions of various devices in the room and the moving conditions of the users can be changed, and the living quality of the people can be improved.

A charger has two pins for connecting with a battery therebetween, and an apparatus and method are proposed to determine to wake up or turn off the charger according to a voltage or a current detected from the two pins, to reduce the standby power consumption of the charger.

A low-dropout (LDO) voltage regulator that includes an error amplifier which compares a reference voltage with a feedback voltage of an output voltage and outputs an error signal based on the result of the comparison, the error amplifier being biased by an input voltage; a first MOS transistor having a gate electrically connected to the error signal, a source electrically connected to the input voltage and a drain electrically connected to the output voltage; a voltage divider which transmits a predetermined part of the output voltage to the error amplifier as feedback voltage; and a level limiter which limits a level of the output voltage from changing beyond and below an offset voltage when a level of a load current changes. In accordance with embodiments, A predetermined number of comparators and MOS transistor type-switches are provided to enhance the slew ratio of the regulated output voltage and to reduce standby electricity consumption.

A display includes a power supply system using a power controller to switch a power switch to control power delivery, and an image scalar receiving a supply voltage and a supply current from the power supply system. An apparatus and method are proposed to determine a control signal in a standby mode by monitoring the supply voltage or the supply current, to wake up or turn off the power controller to reduce the switching times of the power switch in the standby mode, thereby reducing the switching loss of the power switch and the standby power consumption of the display.

An apparatus and method for a flyback power converter reduce the standby output voltage of the flyback power converter by switching the reference voltage provided by a shunt regulator of the flyback power converter or the ratio of voltage divider resistors of the shunt regulator, to reduce the standby power consumption by an output feedback circuit of the flyback power converter, the shunt regulator, and the voltage divider resistors, and thereby the power loss of the flyback power converter in standby mode.

The invention discloses a networking interconnection method and system based on low-power-consumption Bluetooth piconets. According to the method and system, multiple peripheral devices broadcast pieces of service type information, containing whether multiple wireless connections are supported or not, corresponding to the peripheral devices respectively to the periphery at low power consumption in a connectable non-directional mode; a central Bluetooth device generates a corresponding peripheral device service list according to the Bluetooth addresses, the pieces of service type information and the pieces of service address information corresponding to the peripheral Bluetooth devices which are connected so that networking of the central device and the peripheral devices can be achieved; after networking is completed, corresponding piconets are established for the central device and the peripheral devices, and any two devices are wirelessly connected according to the corresponding peripheral device service list. By establishing the piconets, any two of the central device and the peripheral devices can be wirelessly connected, user operation is easy and convenience, and the devices is ultralow in stand-by power consumption at ordinary times; interconnection is convenient, operation is convenience, energy is saved, environmental friendliness is achieved, and great convenience is brought.

System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.