Chengdu Monolithic Power Systems Co., Ltd.

Monolithic Power Systems, Inc.

Huawei Digital Technologies (Cheng Du) Co., Ltd.

General Electric Company

Chengdu University of Technology

Tp-Link Systems Inc.

Jiangsu Xin Chen Thermal Technology Co., Ltd

China Chengda Engineering Co. Ltd

Rui Wang

Min Xu

Jie Jerry Liu

Bin Liu

Christian Gregory Sporck

Yike Li

Haishi Wang

Zhengwei Zhang

Chen Gong

Shanglin Xu

Jinyan Lin

Shuguo Zhou

Gang Lan

Kelly Scott Chichak

Lei Li

Lei Du

Qiming Zhao

Yangang Liang

Li Xu

Jun Li

En Li

Bin Wang

Shengxia Liu

Bin He

Yunping Lang

Changjiang Chen

Huijie Zhao

Dong Shen

Xuben Wang

Zhengwei Xu

Shengxian Liang

Zhenya Zhang

Yueying Du

Yang Jiang

Yuda Chen

Shixiong Song

Jin Tang

Zhituo Wang

Kui Li

Yufeng Zeng

Rentao Liu

Xifeng Peng

Ren Wang

Zemao Huang

A battery charge current management system used for charging battery packs. The battery charge current management system has a voltage converting circuit and at least one switch module. The voltage converting circuit can operate at a charge mode or a discharge mode. The voltage converting circuit can serve to provide a master charge current signal to supply a system load and charge battery packs when it operates at the charge mode. The voltage converting circuit further controls the at least one switch module to provide at least one additional charge current signal to supply the system load and charge battery packs.

Battery charge current management system and related integrated circuit

This disclosure provides a method for determining a terminal in a sticky state. The method includes: determining whether a roaming target determination is supported for a terminal by a first AP; performing an operation for the roaming target determination based on determining that the roaming target determination is supported; performing at least one of determining that the terminal is in a first sticky state based on a determination that the terminal is not connected to a second AP according to a roaming target suggestion of the first AP, based on a finding of one or more roaming targets by the operation; or determining that the terminal is in a second sticky state based on a strength of a signal between the terminal and the first AP being smaller than a first strength threshold, based on determining that the roaming target determination is not supported or a failure of the operation.

Method and access point for determining and processing a terminal in a sticky roaming state

A battery discharge current management system used for discharging battery packs. The battery discharge current management system has a voltage converting circuit and at least one switch module. The voltage converting circuit can operate at a charge mode or a discharge mode. The voltage converting circuit can serve to discharge battery packs so as to provide a master discharge current signal to other devices when it operates at the discharge mode. The voltage converting circuit further controls the at least one switch module to discharge the battery packs so as to provide at least one additional discharge current signal.

Battery discharge current management system with fast discharging function and related integrated circuit

A bi-directional voltage converter having a first switch, a second switch, an inductor, a third switch, a fourth switch and a fifth switch connected in parallel with the third switch. The first switch is connected between an input terminal and a first switching terminal, the second switch is connected between the first switching terminal and a reference ground, the inductor is connected between the first switching terminal and an output switching terminal, the third switch is connected between the output switching terminal and a system terminal, the fourth switch is connected between the output switching terminal and the reference ground. When the bi-directional voltage converter is regulated to work in a buck charging mode or a boost discharging mode, the first and second switches are controlled to conduct on and off complementarily, the third and fifth switches are maintained at on state, the fourth switch is maintained at off state.

Bi-directional voltage converter for high power applications

A supply voltage generating circuit and method for a power system. The power system has a power input terminal to receive an input voltage, a system output terminal to provide a system voltage, a switching circuit, a bootstrap capacitor, and a first driver circuit with a power terminal. The switching circuit works in a buck mode to convert the input voltage to the system voltage, or in a boost mode to convert the system voltage to a boost output voltage. The bootstrap capacitor provides a bootstrap voltage at a bootstrap terminal. The method is generating an input pump voltage based on the input voltage and the boost output voltage, generating a first supply voltage based on the bootstrap voltage and the input pump voltage, and providing the first supply voltage to the power terminal of the first driver circuit.

Supply voltage generating method for a driver circuit in a power system

A charge pump comprises two bridge arms coupled in parallel, two capacitors, and a control circuit. Each bridge arm has two pairs of switches coupled in series, each pair of switches having two switches coupled in series through a common node. Each capacitor is connected between the two common nodes of the corresponding bridge arm. The control circuit provides a mode signal by comparing an output voltage of the charge pump with two threshold voltages via a hysteretic comparison, and provides two control signals with opposite logic states based on the mode signal to control each pair of the switches to work complementarily, wherein the logic states of the control signals flip in response to transiting from a first status to a second status of the mode signal, and maintain in response to transiting from the second status to the first status of the mode signal.

Charge pump with improved light-load efficiency and control method thereof

A multi-port battery charge and discharge system used for battery pack charge and discharge. The multi-port battery charge and discharge system has a plurality of voltage converting circuits, each of which can operate in a charge mode to supply load and charge a battery pack or in a discharge mode to supply power sinks. The multi-port battery charge and discharge system further has at least one switch module providing an additional current signal to charge the battery pack.

Multi-port battery charge and discharge system

Disclosed are a hybrid density abrupt interface inversion method based on machine learning constraints. The inversion method includes constructing an initial basin interface and randomly generating a disturbed basin interface data set; obtaining a basin interface data set through Hadamard product operation on the initial basin interface and the disturbed basin interface data set; obtaining a high-resolution density interface model data set through filling the basin interface data set with advanced functions; performing forward calculation to obtain a simulated gravity data set; carrying out mathematical transformation on the simulated gravity data set and weighting to obtain a low-resolution migration density interface model data set; optimizing a migration model-based deep learning network and mapping to obtain a high-resolution constrained density interface prior model; and constructing a stable nonlinear loss function and performing regularization inversion to obtain a high-resolution density interface model.

Density abrupt interface inversion method and system based on machine learning constraints

A multi-port battery charge and discharge system used in the charge and discharge battery pack application. The multi-port battery charge and discharge system has N voltage converting circuits, each of which can operate in a charge mode to charge a battery pack or in a discharge mode to supply power sinks. The N voltage converting circuits can be operated in a master-slave configuration with one of the N voltage converting circuits set as a master voltage converting circuit and the remained ones set as slave voltage converting circuits. In a charge state, the master voltage converting circuit provides a regulated current signal to charge the battery pack, and the slave voltage converting circuits provide slave current signals to complementally charge the battery pack.

A battery balancing method and circuit for balancing the voltages between battery units with a fly capacitor. In a first time period of a switching cycle, the first battery unit is used to charge the fly capacitor or the first battery unit is used to discharge the fly capacitor, depending on which of the first battery unit and the fly capacitor having a larger voltage value; and in a second time period of the switching cycle, the second battery unit is used to charge the fly capacitor or the second battery unit is used to discharge the fly capacitor, depending on which of the second battery unit and the fly capacitor having a larger voltage value.

Battery balancing circuit balancing voltages between battery units with a fly capacitor

A method and an apparatus for buffering and obtaining resources as well as a resource buffering system are disclosed. The method includes: obtaining an access popularity value of a resource from a database at intervals of a first preset time, and obtaining load values of cache servers from the database if determining that the access popularity value reaches a preset first threshold; and determining a duplication cache server for duplicating the resource according to the access popularity value and the load values, and notifying the duplication cache server to duplicate the resource from a cache server that stores the resource and buffer the resource. The method overcome the problems in the prior art, namely, the same resource is buffered in only one cache server and the relatively idle cache servers are unable to share loads with busy cache servers. The method improves extensibility and working efficiency of the buffering system.

Method and apparatus for buffering and obtaining resources, resource buffering system

A method and an apparatus for buffering and obtaining resources as well as a resource buffering system are disclosed. The method includes: obtaining an access popularity value of a resource from a database at intervals of a first preset time, and obtaining load values of cache servers from the database if determining that the access popularity value reaches a preset first threshold; and determining a duplication cache server for duplicating the resource according to the access popularity value and the load values, and notifying the duplication cache server to duplicate the resource from a cache server that stores the resource and buffer the resource. The method overcome the problems in the prior, namely, the same resource is buffered in only one cache server and the relatively idle cache servers are unable to share loads with busy cache servers. The method improves extensibility and working efficiency of the buffering system.

A high side buck converter includes a high side transistor, a low side transistor, a sensor, a sensing window generator, an error amplifier, a first comparator and an on-time signal generator. The high side and low side transistors are coupled together to form a switch node which is used as the reference ground of the controller. The sensor senses the output voltage and generates a sensing signal. The sensing window generator generates a sensing window signal. The error amplifier amplifies the error between a feedback signal of the sensing signal and a reference signal during the sensing window, and generates an error signal. The first comparator compares the feedback signal with the error signal and generates a first comparison signal. The on-time signal generator generates an on-time signal based on the first comparison signal, so as to control the high side and low side transistors.

High side buck converters and control methods thereof

A step-down regulator comprising a pseudo constant on time control circuit is disclosed, comprising an on-time generator configured to receive a switching signal provided by the step-down regulator and a control signal provided by the pseudo constant on time control circuit, and generates an on-time signal; a feedback control circuit configured to receive a feedback signal representative of the output voltage of the step-down regulator and generate an output signal; and a logic control circuit coupled to the on-time generator and the feedback control circuit to receive the on-time signal and the output signal and generating the control signal, and a power stage configured to receive an input voltage and the control signal and generate the switching signal.

Pseudo constant on time control circuit and step-down regulator

A switching regulator configured to provide an output voltage comprises a power stage, an error correction circuit, a comparator, an ON-time generator and a logic circuit. The error correction circuit generates an error correction voltage based on a reference voltage and a feedback voltage representative of the output voltage. The comparator compares the feedback voltage with the difference between the reference voltage and the error correction voltage, and generates a comparison signal. The ON-time generator is configured to provide an ON-time signal. The logic circuit generates a logic control signal to control the power stage based on the comparison signal and the ON-time signal.

Switching regulator with error correction and control method thereof

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Chengdu, China

Rui Wang