公开(公告)号：US20150116012A1

公开(公告)日：2015-04-30

申请号：US14066961

申请日：2013-10-30

申请人： Hasnain Lakdawala ,  Eshel Gordon ,  Ofir Degani ,  Ashoke Ravi ,  Thomas W. Brown

发明人： Hasnain Lakdawala ,  Eshel Gordon ,  Ofir Degani ,  Ashoke Ravi ,  Thomas W. Brown

IPC分类号： H03K4/12

CPC分类号： H03K4/12 ,  H03K4/48 ,  H03K4/502

摘要： According to some embodiments, an all digital ramp generator may use a string of series connected delays or digital to time-based circuits to perform voltage ramp generation. Thus in some embodiments conventional operational amplifier circuits and relaxation oscillators may be replaced for generating triangular ramp waveforms for DC to DC or direct time-based DC to DC converters. The use of delay lines may produce sufficient resolution for many applications. Thus time domain techniques may afford a more digital approach that scales with process technology and allows high speed operation in some embodiments. A design based on use of inverters and capacitors may scale well with process technology. The decoder and drive logic may be integrated into the voltage ramp generation in some embodiments.

摘要翻译： 根据一些实施例，全数字斜坡发生器可以使用串联连接的延迟串或数字到基于时间的电路来执行电压斜坡生成。 因此，在一些实施例中，常规运算放大器电路和弛豫振荡器可以被替换以产生用于直流到直流或直接基于时间的直流到直流转换器的三角形斜坡波形。 使用延迟线可以为许多应用产生足够的分辨率。 因此，时域技术可以提供与数字处理技术相比较的数字化方法，并且在一些实施例中允许高速操作。 基于逆变器和电容器的设计可以与工艺技术相结合。 在一些实施例中，解码器和驱动逻辑可以集成到电压斜坡生成中。

公开(公告)号：US07129782B2

公开(公告)日：2006-10-31

申请号：US10813941

申请日：2004-03-30

申请人： Semyon Lebedev ,  Eshel Gordon

发明人： Semyon Lebedev ,  Eshel Gordon

IPC分类号： H03F3/45

CPC分类号： H03F3/45192 ,  H03F1/305 ,  H03F3/45654 ,  H03F2203/45028 ,  H03F2203/45418 ,  H03F2203/45666

摘要： A fully differential amplifier having a start-up circuit is described. The fully differential amplifier may be a two-stage amplifier with a start-up circuit coupled between the stages. The start-up circuit may include a sense circuit coupled between a common mode input and internal nodes that are connect to output transistors of the fully differential amplifier. The sense circuit produces a reset signal that forces the fully differential amplifier into a mode of operation.

摘要翻译： 描述具有启动电路的全差分放大器。 全差分放大器可以是两级放大器，其中启动电路耦合在各级之间。 启动电路可以包括耦合在共模输入和连接到全差分放大器的输出晶体管的内部节点之间的感测电路。 感测电路产生复位信号，迫使全差分放大器进入工作模式。

公开(公告)号：US20050218985A1

公开(公告)日：2005-10-06

申请号：US10813941

申请日：2004-03-30

申请人： Semyon Lebedev ,  Eshel Gordon

发明人： Semyon Lebedev ,  Eshel Gordon

IPC分类号： H03F1/30 ,  H03F3/45

CPC分类号： H03F3/45192 ,  H03F1/305 ,  H03F3/45654 ,  H03F2203/45028 ,  H03F2203/45418 ,  H03F2203/45666

摘要： A fully differential amplifier having a start-up circuit is described. The fully differential amplifier may be a two-stage amplifier with a start-up circuit coupled between the stages. The start-up circuit may include a sense circuit coupled between a common mode input and internal nodes that are connect to output transistors of the fully differential amplifier. The sense circuit produces a reset signal that forces the fully differential amplifier into a mode of operation.

摘要翻译： 描述具有启动电路的全差分放大器。 全差分放大器可以是两级放大器，其中启动电路耦合在各级之间。 启动电路可以包括耦合在共模输入和连接到全差分放大器的输出晶体管的内部节点之间的感测电路。 感测电路产生复位信号，迫使全差分放大器进入工作模式。