公开(公告)号：US20130069614A1

公开(公告)日：2013-03-21

申请号：US13466791

申请日：2012-05-08

申请人： Chung-Hsien Tso ,  Wei-Hsin Wei ,  Kuo-Chen Tsai ,  Shui-Mu Lin ,  Yu-Chia Hsu ,  Wei-Chuan Wu

发明人： Chung-Hsien Tso ,  Wei-Hsin Wei ,  Kuo-Chen Tsai ,  Shui-Mu Lin ,  Yu-Chia Hsu ,  Wei-Chuan Wu

IPC分类号： G05F1/10

CPC分类号： H02M3/07

摘要： The present invention discloses a power supply circuit with adaptively enabled charge pump. The power supply circuit includes: a buck switching regulator switching at least one power switch therein to convert an input voltage to a middle voltage according to a control signal; a charge pump coupled to the buck switching regulator, wherein when the charge pump is enabled, the charge pump boosts the middle voltage to provide an output voltage higher than the middle voltage, and when the charge pump is disabled, the middle voltage is supplied as the output voltage; and a controller generating the control signal to control the switching regulator, and determining to enable or disable the charge pump according to a level of the input voltage.

摘要翻译： 本发明公开了一种具有自适应使能电荷泵的电源电路。 电源电路包括：降压开关调节器，其中至少切换一个电源开关，根据控制信号将输入电压转换为中间电压; 耦合到降压开关调节器的电荷泵，其中当电荷泵被使能时，电荷泵升高中间电压以提供高于中间电压的输出电压，并且当电荷泵被禁用时，中间电压被提供为 输出电压; 以及控制器，其产生控制信号以控制开关调节器，以及根据输入电压的电平确定使能或禁用电荷泵。