O2 Micro, Incorporated

O2micro International Limited

Shenzhen Goodix Technology Co., Ltd.

02micro Inc.

Songtao Chen

Chutao Zhang

Guo Xing Li

Wei Zhang

Guoxing Li

Ruichao Tang

Jiankui Guo

Xin Dong

Celin He

Chutao Zheng

Wenjun Liu

The present invention provides a processing circuit, a method, and an electronic device for multiple power supply ports. The processing circuit includes N control modules and a bus. Each control module is correspondingly connected to a power supply port. The communication interface of each control module is connected to the bus. The bus is a one-wire bus and is connected to a power line ground through a resistor. The control modules transmit value signals to the bus. The varied range of a first physical quantity of a bus signal carried by the bus is related to first physical quantities or second physical quantities of all target signals transmitted to the bus. The control module detects the first quantity of the bus signal through the communication interface and adjusts the operating parameter of the connected power supply port according to the varied range of the detected first physical quantity.

Processing circuit, method, and electronic device for multiple power supply ports

The present disclosure, related to the technical field of fingerprint identification, discloses a ramp wave generation circuit, a digital-to-analog conversion circuit, and a fingerprint identification system. The ramp wave generation circuit comprises: an integrating circuit, configured to output a ramp wave signal; a signal regulation circuit, comprising a feedback control loop and a transconductance amplifier connected in series, wherein the feedback control loop monitors the ramp wave signal output by the integrating circuit, and outputs a regulation control signal to the transconductance amplifier, the transconductance amplifier corrects, according to the regulation control signal, a ramp wave signal output by the integrating circuit within a next period; and a voltage generation circuit, configured to respectively output a reference voltage signal to the integrating circuit and the signal regulation circuit.

Slope wave generation circuit and digital-to-analog conversion circuit thereof, fingerprint identification system

A method for balancing multiple battery cells which are grouped into multiple battery modules includes: obtaining cell parameters of the battery cells, respectively; calculating an average cell parameter for each of the battery modules according to the cell parameters; identifying a donator module and a receiver module from the battery modules based upon the average cell parameter; and transferring energy from the donator module to the receiver module to balance the battery cells.

Systems and methods for cell balancing

A circuit for charging a battery pack includes a transformer and a charger controller. The transformer is operable for receiving an input power and for providing a charging power according to a driving signal to charge the battery pack. The charger controller is operable for monitoring a status of the battery pack, for selecting a charging mode from multiple charging modes according to the status, and for generating the driving signal according to the charging mode to adjust the charging power. The charger controller further executes a state machine that stores data indicating predetermined battery statuses that cause saturation of the transformer, and that selects a protection mode in which said charging power is restricted if the status of the battery pack matches to one of the predetermined battery statuses.

Circuits and methods for battery charging

A battery circuit including a first battery cell with a first parameter having a first value and a second battery cell with a second parameter having a second value. The second battery cell is coupled to the first battery cell in series. The battery circuit further includes a magnetic device operable for storing energy transferred from the first battery cell via a first winding coupled to the first battery cell and for releasing the stored energy to the second battery cell via a second winding coupled to the second battery cell if the first value of the first parameter is greater than the second value of the second parameter.

Battery management system with energy balance among multiple battery cells

The present invention provides a battery circuit including a first battery cell with a first parameter having a first value and a second battery cell with a second parameter having a second value. The second battery cell is coupled to the first battery cell in series. The battery circuit further includes a magnetic device operable for storing energy transferred from the first battery cell via a first winding coupled to the first battery cell and for releasing the stored energy to the second battery cell via a second winding coupled to the second battery cell if the first value of the first parameter is greater than the second value of the second parameter.

A circuit for charging a battery pack includes a power converter and a charger controller. The power converter is operable for receiving an input power, and for providing a charging power for charging the battery pack. The power converter provides galvanic isolation between input circuitry and output circuitry of the circuit. The input circuitry shares a first ground potential with the input power, and the output circuitry shares a second ground potential with the charging power. The charger controller in the input circuitry includes a modulator for generating a driving signal to drive the power converter and control the charging power.

A fuse circuit includes a fuse having an intact state and a blown state. The fuse can be switched to the blown state by enabling a blowing current to flow through the fuse. The fuse is coupled between a first transistor and a second transistor in series. The first transistor and the second transistor are complementary transistors and operable for reducing an electrostatic discharge current flowing through the fuse. The first transistor and the second transistor are turned on to enable the blowing current to flow through the fuse.

Growing community of inventors

Shenzhen, China

Songtao Chen