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公开(公告)号：US20150070090A1
公开(公告)日：2015-03-12
申请号：US14482714
申请日：2014-09-10
Applicant: STMicroelectronics International N.V.
Inventor： Shyam Somayajula , Sri Ram Gupta , Lionel Cimaz
CPC classification number: H02M3/07 , H02M2001/0032 , H02M2001/0035 , H03F3/187 , H03F3/45475 , H03F2200/03 , Y02B70/16
Abstract: A device may be associated with a power source. The device may include a charge pump configured to output a pulse-width modulated voltage based upon an input voltage from the power source, with the pulse-width modulated voltage varying between a first voltage and a second voltage. The device may also include a low-pass filter comprising an output capacitor, with the output capacitor being configured to average the pulsed-width modulated voltage and to output a filtered voltage having a value different than that of the input voltage. The device may further include a controller configured to selectively decouple the charge pump from the power source when a load imposed on the low-pass filter is below a threshold load.
Abstract translation: 设备可以与电源相关联。 该装置可以包括电荷泵，其被配置为基于来自电源的输入电压输出脉宽调制电压，其中脉宽调制电压在第一电压和第二电压之间变化。 器件还可以包括包括输出电容器的低通滤波器，输出电容器被配置为平均脉冲宽度调制电压并输出具有与输入电压值不同的值的滤波电压。 该装置还可以包括控制器，其被配置为当施加在低通滤波器上的负载低于阈值负载时，选择性地将电荷泵与电源分离。
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公开(公告)号：US09385593B2
公开(公告)日：2016-07-05
申请号：US14482714
申请日：2014-09-10
Applicant: STMicroelectronics International N.V.
Inventor： Shyam Somayajula , Sri Ram Gupta , Lionel Cimaz
CPC classification number: H02M3/07 , H02M2001/0032 , H02M2001/0035 , H03F3/187 , H03F3/45475 , H03F2200/03 , Y02B70/16
Abstract: A device may be associated with a power source. The device may include a charge pump configured to output a pulse-width modulated voltage based upon an input voltage from the power source, with the pulse-width modulated voltage varying between a first voltage and a second voltage. The device may also include a low-pass filter comprising an output capacitor, with the output capacitor being configured to average the pulsed-width modulated voltage and to output a filtered voltage having a value different than that of the input voltage. The device may further include a controller configured to selectively decouple the charge pump from the power source when a load imposed on the low-pass filter is below a threshold load.
Abstract translation: 设备可以与电源相关联。 该装置可以包括电荷泵，其被配置为基于来自电源的输入电压输出脉宽调制电压，其中脉宽调制电压在第一电压和第二电压之间变化。 器件还可以包括包括输出电容器的低通滤波器，输出电容器被配置为平均脉冲宽度调制电压并输出具有与输入电压值不同的值的滤波电压。 该装置还可以包括控制器，其被配置为当施加在低通滤波器上的负载低于阈值负载时，选择性地将电荷泵与电源分离。
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