公开(公告)号：US20130342178A1

公开(公告)日：2013-12-26

申请号：US13672831

申请日：2012-11-09

Applicant: ASKEY COMPUTER CORP.

Inventor： Wei-Chung Wang

IPC: G05F1/66

CPC classification number: G05F1/66 ,  H02M3/00 ,  H02M2001/0009 ,  H02M2001/0032 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02B70/16

Abstract: A power supply mode switching circuit and method switch between power supply modes of a power supply device dynamically based on an operating current required for operation of an electronic product, such that the power supply device supplies a supplying current corresponding to the operating current. The circuit comprises a sampling unit, an amplifying unit, a comparing unit. The circuit is disposed between the power supply device and the electronic product, samples the supplying current from the power supply device with the sampling unit, and converts the supplying current into a sampling voltage. The amplifying unit converts the sampling voltage into an amplifying voltage by voltage amplification and outputs the amplifying voltage to the comparing unit. After comparing the voltage level of a reference voltage and that of the amplifying voltage, the comparing unit generates a control signal for switching the power supple modes of the power supply device.

Abstract translation: 电源模式切换电路和方法基于电子产品的操作所需的工作电流动态地对供电装置的电源模式之间进行切换，使得电源装置提供对应于工作电流的供电电流。 电路包括采样单元，放大单元，比较单元。 电路设置在电源装置和电子产品之间，对来自电源装置的供电电流与采样单元进行采样，并将供电电流转换成采样电压。 放大单元通过电压放大将采样电压转换成放大电压，并将放大电压输出到比较单元。 在比较参考电压的电压电平和放大电压的电平之后，比较单元产生用于切换供电装置的电源模式的控制信号。