On-bright Electronics (shanghai) Co., Ltd.

Guangzhou On-bright Electronics Co., Ltd.

China University of Geosciences (wuhan)

Guangzhou Marine Geological Survey

Qiang Luo

Lieyi Fang

Yaming Cao

Liqiang Zhu

Yuan Lin

Xiaomin Huang

Jiqing Yang

Zhiliang Chen

Jun Zhou

Chao Yao

Fagang Wang

Miao Li

Zhuoyan Li

Dongze Yang

Yaozhang Chen

Zhenglan Xia

Haibo Li

Xiangkun Zhai

Huawei Lv

Huawei Lyu

Meng Li

Tingzhi Yuan

Yongsheng Su

Zhongliang Xiong

Senlin Yang

Jianfeng Huang

Zhichao Liu

Jianliang Ye

Yanjiang Yu

Qiuping Lu

Xuwen Qin

Fulong Ning

Dongdong Wang

Zhiqin Zhao

Guannan Wang

Tinghui Wan

Haoxian Shi

Xiangyu Fang

Charge pump and method therefor. For example, a charge pump for converting an input voltage to an output voltage includes: a first capacitor connected between a first terminal and a second terminal; a second capacitor connected between the second terminal and a third terminal; a first transistor including a first drain, a first source, and a first gate, the first drain being connected to an input terminal configured to receive the input voltage; a second transistor including a second drain, a second source, and a second gate; a third transistor; a fourth transistor; and an internal circuit configured to perform a self-detection process by determining whether or not at least one defect has been detected for at least one component selected from a group consisting of the first capacitor, the second capacitor, the first transistor, the second transistor, the third transistor, and the fourth transistor.

Systems and methods for performing self-detection and pre-start processes for charge pumps

Handshake controller and handshake control method for one or more charging protocols. For example, a handshake controller for one or more charging protocols includes: a port detection unit connected to a plurality of USB ports and configured to generate a detection signal; a port selection unit configured to receive the detection signal and connected to the plurality of USB ports; an interface unit connected to the port selection unit; and a digital handshake unit connected to the interface unit; wherein the port detection unit is further configured to: determine whether a single USB port of the plurality of USB ports is connected to a load device.

Handshake controllers for charging protocols related to multiport chargers and methods thereof

Voltage converter and method for converting an input voltage to an output voltage. For example, a voltage converter for converting an input voltage to an output voltage includes: a coil; multiple switches including one or more switches connected to the coil; a modulation signal generator configured to: receive the output voltage and one or more detection signals indicating a magnitude of a coil current flowing through the coil; and generate a first signal and a second signal based at least in part upon the output voltage and the one or more detection signals; and an operation mode controller configured to: receive the input voltage, the output voltage, the first signal, and the second signal; and generate one or more mode signals based at least in part upon the input voltage, the output voltage, the first signal, and the second signal.

Systems and methods for controlling operation modes of DC-to-DC voltage converters

System and method for generating one or more compensation currents for a DC-to-DC voltage converter. For example, a system for generating one or more compensation currents for a DC-to-DC voltage converter includes: a voltage generator configured to receive a reference voltage and generate a first ramp voltage and a second ramp voltage based at least in part on the reference voltage; and a current generator configured to receive the first ramp voltage, the second ramp voltage, an input voltage, and an output voltage; wherein the current generator is further configured to: if the output voltage is smaller than the input voltage, generate a first compensation current based at least in part on the first ramp voltage; and if the output voltage is larger than the input voltage, generate a second compensation current based at least in part on the second ramp voltage.

Systems and methods for generating currents with variable slopes for DC-to-DC voltage converters

System and method for charging or discharging one or more batteries. For example, a battery management system for charging or discharging one or more batteries includes: a first transistor including a first transistor terminal, a second transistor terminal, and a third transistor terminal, the second transistor terminal being configured to receive a first drive signal; a second transistor including a fourth transistor terminal, a fifth transistor terminal, and a sixth transistor terminal, the fifth transistor terminal being configured to receive a second drive signal; a burst mode detector configured to receive the first drive signal and generate a burst-mode detection signal based at least in part on the first drive signal; and a drive signal generator configured to receive the burst-mode detection signal and generate the first drive signal and the second drive signal based at least in part on the burst-mode detection signal.

Systems and methods for low current detection

System controller and method for regulating a power converter. For example, the system controller includes a first controller terminal and a second controller terminal. The system controller is configured to receive an input signal at the first controller terminal and generate a drive signal at the second controller terminal based at least in part on the input signal to turn on or off a transistor in order to affect a current associated with a secondary winding of the power converter. Additionally, the system controller is further configured to determine whether the input signal remains larger than a first threshold for a first time period that is equal to or longer than a first predetermined duration.

Systems and methods for regulating power conversion systems with output detection and synchronized rectifying mechanisms

System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes a first controller terminal and a second controller terminal. Additionally, the system controller is configured to receive an input signal at the first controller terminal, and generate a drive signal at the second controller terminal based at least in part on the input signal to turn on or off a transistor in order to affect a current associated with a secondary winding of the power conversion system. Moreover, the system controller is further configured to determine whether the input signal is larger than a first threshold at a first time, in response to the input signal being determined to be larger than the first threshold at the first time, determine whether the input signal is smaller than a second threshold at a second time.

System and method for transmitting and receiving. For example, the system includes a transmitter, one or more wires, and a receiver connected to the transmitter through the one or more wires. The transmitter is configured to generate a first current, and the receiver is configured to receive the first current. The receiver includes a coil, a Hall effect sensor, and a comparator, and the Hall effect sensor includes a first electrode and a second electrode. The coil is electrically isolated from the Hall effect sensor and configured to generate a magnetic field based at least in part on the first current flowing through the coil, and the Hall effect sensor is configured to sense the magnetic field and generate a first voltage at the first electrode and a second voltage at the second electrode. The comparator includes a first input terminal and a second input terminal.

Switch-mode power converters using hall effect sensors and methods thereof

System and method for a power converter. For example, the system includes a first controller; a first transmitter; a first receiver; one or more first wires; one or more second wires; a second controller; a second receiver connected to the first transmitter through the one or more first wires; and a second transmitter connected to the first receiver through the one or more second wires. The first controller is configured to output a first control signal to a first switch to affect a first current flowing through a primary winding of a power converter; and generate a first input signal. The first transmitter is configured to receive the first input signal and generate the first current. The second receiver includes a first coil configured to generate a first magnetic field based at least in part on the first current flowing through the first coil.

Systems and methods are provided for signal processing. An example error amplifier for processing a reference signal and an input signal associated with a current of a power conversion system includes a first operational amplifier, a second operational amplifier, a first transistor, a second transistor, a current mirror component, a switch, a first resistor and a second resistor. The first operational amplifier includes a first input terminal, a second input terminal and a first output terminal, the first input terminal being configured to receive a reference signal. The first transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal, the first transistor terminal being configured to receive a first amplified signal from the first output terminal, the third transistor terminal being coupled to the second input terminal.

Systems and methods for high precision and/or low loss regulation of output currents of power conversion systems

The present invention discloses a natural gas hydrate-bearing sediment intergranular micro-force testing device and a testing method thereof. The testing device comprises: a high pressure reactor, a natural gas cylinder, a natural gas buffer tank, a condensate circulation device, a water source and a gas-liquid saturated tank, wherein a gas inlet of the natural gas buffer tank communicates with the natural gas cylinder through a first pipeline, a gas outlet of the natural gas buffer tank communicates with a gas inlet of the high pressure reactor through a second pipeline, a water inlet of the high pressure reactor communicates with a water outlet of the gas-liquid saturated tank through a third pipeline, a water inlet of the gas-liquid saturated tank communicates with the water source through a fourth pipeline, the gas outlet of the natural gas buffer tank communicates with the fourth pipeline through a fifth pipeline.

Natural gas hydrate-bearing sediment intergranular micro-force testing device and testing method thereof

A two-terminal IC chip and method thereof. For example, a two-terminal IC chip includes a first chip terminal and a second chip terminal. A first terminal voltage is a voltage of the first chip terminal, a second terminal voltage is a voltage of the second chip terminal, and a chip voltage is equal to a difference between the first terminal voltage and the second terminal voltage. The chip is configured to allow a chip current to flow into the chip at the first chip terminal and out of the chip at the second chip terminal, or to flow into the chip at the second chip terminal and out of the chip at the first chip terminal. The chip current is larger than or equal to zero in magnitude. The chip is further configured to change a relationship between the chip voltage and the chip current with respect to time. The chip is an integrated circuit, and the chip does not include any additional chip terminal other than the first chip terminal and the second chip terminal.

Two-terminal integrated circuits with time varying voltage-current characteristics including phased-locked power supplies

System and method for regulating a power conversion system. An example system controller for regulating a power conversion system includes a first controller terminal associated with a first controller voltage and coupled to a first transistor terminal of a first transistor, the first transistor further including a second transistor terminal and a third transistor terminal, the second transistor terminal being coupled to a primary winding of a power conversion system, a second controller terminal associated with a second controller voltage and coupled to the third transistor terminal, and a third controller terminal associated with a third controller voltage. The first controller voltage is equal to a sum of the third controller voltage and a first voltage difference. The second controller voltage is equal to a sum of the third controller voltage and a second voltage difference.

Systems and methods for source switching and voltage generation

Growing community of inventors

Shanghai, China

Qiang Luo