公开(公告)号：US08907649B2

公开(公告)日：2014-12-09

申请号：US13197788

申请日：2011-08-04

申请人： Ho-Feng Lin ,  Chuang-Wei Tseng

发明人： Ho-Feng Lin ,  Chuang-Wei Tseng

IPC分类号： H02M3/156 ,  H02M1/00

CPC分类号： H02M3/156 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2001/0032 ,  Y02B70/16

摘要： A voltage converter includes a voltage converting circuit, a pulse width modulation (PWM) controller, a feedback circuit, an adjusting circuit, and a measuring circuit. The voltage converting circuit converts an input voltage to a low output voltage for a load. The PWM controller includes a comparator and a triangular-wave oscillator. The comparator is connected to the voltage converting circuit and outputs a PWM voltage to the voltage converting circuit. The triangular-wave oscillator is connected to an inverting terminal of the comparator, and outputs a sawtooth-wave voltage to the comparator. The feedback circuit is connected to a non-inverting terminal of the comparator and outputs a feedback voltage to the comparator. The measuring circuit measures current output from the voltage converting circuit and controls the adjusting circuit to provide a pull-up voltage to the triangular-wave oscillator when the measured current decreases, thereby increasing the duty ratio of the PWM voltage.

摘要翻译： 电压转换器包括电压转换电路，脉冲宽度调制（PWM）控制器，反馈电路，调节电路和测量电路。 电压转换电路将输入电压转换为负载的低输出电压。 PWM控制器包括比较器和三角波振荡器。 比较器连接到电压转换电路，并向电压转换电路输出PWM电压。 三角波振荡器连接到比较器的反相端，并向比较器输出锯齿波电压。 反馈电路连接到比较器的同相端，并向反相器输出反馈电压。 测量电路测量电压转换电路的电流输出，并控制调节电路，当测量电流降低时，向三角波振荡器提供上拉电压，从而增加PWM电压的占空比。

公开(公告)号：US08248048B2

公开(公告)日：2012-08-21

申请号：US12818182

申请日：2010-06-18

申请人： Ho-Feng Lin

发明人： Ho-Feng Lin

IPC分类号： G05F1/00 ,  G05F1/613

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： A standby power supply circuit includes a pulse width modulation controller, first to fourth metal-oxide-semiconductor field effect transistors (MOSFETs), and an inductor. A gate of the first MOSFET and a gate of the second MOSFET are connected to a first and a second general purpose terminals of a power management chip, respectively. A drain of the first MOSFET is connected to a source of the third MOSFET. A gate of the fourth MOSFET is connected to a lower gate terminal of the controller. A phase terminal of the controller is grounded via the inductor and a capacitor in series. The drain of the second MOSFET is connected to a node between the inductor and the capacitor via a resistor.

摘要翻译： 备用电源电路包括脉冲宽度调制控制器，第一至第四金属氧化物半导体场效应晶体管（MOSFET）和电感器。 第一MOSFET的栅极和第二MOSFET的栅极分别连接到电源管理芯片的第一和第二通用端子。 第一个MOSFET的漏极连接到第三个MOSFET的源极。 第四个MOSFET的栅极连接到控制器的下部栅极端子。 控制器的相位端子通过电感器和电容器串联接地。 第二个MOSFET的漏极通过电阻连接到电感器和电容器之间的节点。

公开(公告)号：US20110254522A1

公开(公告)日：2011-10-20

申请号：US12818182

申请日：2010-06-18

申请人： Ho-Feng Lin

发明人： Ho-Feng Lin

IPC分类号： G05F1/10

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： A standby power supply circuit includes a pulse width modulation controller, first to fourth metal-oxide-semiconductor field effect transistors (MOSFETs), and an inductor. A gate of the first MOSFET and a gate of the second MOSFET are connected to a first and a second general purpose terminals of a power management chip, respectively. A drain of the first MOSFET is connected to a source of the third MOSFET. A gate of the fourth MOSFET is connected to a lower gate terminal of the controller. A phase terminal of the controller is grounded via the inductor and a capacitor in series. The drain of the second MOSFET is connected to a node between the inductor and the capacitor via a resistor.

摘要翻译： 备用电源电路包括脉冲宽度调制控制器，第一至第四金属氧化物半导体场效应晶体管（MOSFET）和电感器。 第一MOSFET的栅极和第二MOSFET的栅极分别连接到电源管理芯片的第一和第二通用端子。 第一个MOSFET的漏极连接到第三个MOSFET的源极。 第四个MOSFET的栅极连接到控制器的下部栅极端子。 控制器的相位端子通过电感器和电容器串联接地。 第二个MOSFET的漏极通过电阻连接到电感器和电容器之间的节点。