O2 Micro, Incorporated

O2micro International Limited

Quanwang Liu

Guoxing Li

Shiqiang Liu

Yingguo Zhang

Juncai Hu

Guo Xing Li

A dual input power management method includes: monitoring whether a first input terminal has a power supply and whether a second input terminal has a power supply, and accordingly generating a first monitor signal and a second monitor signal; generating a priority signal based on the first monitor signal, the second monitor signal, and an enable signal, to determine an input priority of the first input terminal and the second input terminal; generating a control signal based on a feedback signal indicative of an output voltage and a reference signal; and regulating the output voltage based on the priority signal and the control signal.

Dual input power management method and system

An electronic system includes a charge pump driver for generating an output to control an electronic element. The electronic system further includes a clock generator coupled to the charge pump driver. The clock generator can generate a clock signal to control the charge pump driver and adjust a frequency of the clock signal according to a status of the electronic element.

Charge pump systems with adjustable frequency control

In a signal monitoring system, a circuit includes an input terminal and an output terminal. In addition, a processor coupled to the circuit is operable for calculating a parameter indicative of an error factor of the circuit by setting a level difference between an input signal at the input terminal and an output signal at the output terminal to a predetermined level.

Calibrating a system by setting difference between signals

Calculating a parameter indicative of an error factor of a circuit

Growing community of inventors

Sichuan, China

Quanwang Liu