公开(公告)号：US20120249224A1

公开(公告)日：2012-10-04

申请号：US13435277

申请日：2012-03-30

申请人： Wei-Hsin WEI ,  Jwin-Yen GUO ,  Teng-Hung CHANG ,  Ming-Jun HSIAO

发明人： Wei-Hsin WEI ,  Jwin-Yen GUO ,  Teng-Hung CHANG ,  Ming-Jun HSIAO

IPC分类号： G05F3/02

CPC分类号： H02M3/07 ,  H02M2003/071

摘要： A dual mode charge pump is operable in a first mode or a second mode for providing positive and negative output voltages that can be stabilized by adjusting the charging time of two terminals of a flying capacitor or by adjusting the charging/discharging time of the positive and negative voltage output terminals. The dual mode charge pump can apply to a much wider input supply voltage range with less numbers of power switches, thus requiring less die area and lower costs. Moreover, the dual mode charge pump can precisely define a common mode voltage, thus making the common voltage drift smaller and less load dependent, especially when the output supply voltages are under different load conditions.

摘要翻译： 双模式电荷泵可以在第一模式或第二模式中操作，用于提供正和负输出电压，其可以通过调节飞跨电容器的两个端子的充电时间来稳定，或者通过调节正极和负极的充电/放电时间来稳定 负电压输出端子。 双模式电荷泵可以应用于具有较少数量的电源开关的更宽的输入电源电压范围，因此需要更少的管芯面积和更低的成本。 此外，双模电荷泵可以精确定义共模电压，从而使公共电压漂移越来越小，负载依赖，特别是当输出电源电压处于不同的负载条件下时。

公开(公告)号：US07911268B2

公开(公告)日：2011-03-22

申请号：US12318659

申请日：2009-01-06

申请人： Teng-Hung Chang ,  Jwin-Yen Guo

发明人： Teng-Hung Chang ,  Jwin-Yen Guo

IPC分类号： H03F3/38

CPC分类号： H03F3/2173 ,  H03F1/34 ,  H03F3/387

摘要： A conversion circuit is provided for a 1.5-bit Σ-Δ class-D amplifier to improve the feedback linearity of the class-D amplifier, by periodically inverting and mixing a first positive feedback signal and a first negative feedback signal from the power stage of the class-D amplifier to generate a second positive feedback signal and a second negative feedback signal with better linearity for feedback control in the class-D amplifier.

摘要翻译： A转换电路用于1.5位＆amp; Dgr; D类放大器，通过周期性地反转和混合来自D类放大器的功率级的第一正反馈信号和第一负反馈信号，以产生第二正反馈信号，从而提高D类放大器的反馈线性度; D类放大器中的反馈控制具有更好的线性度的第二负反馈信号。

公开(公告)号：US08487690B2

公开(公告)日：2013-07-16

申请号：US13435277

申请日：2012-03-30

申请人： Wei-Hsin Wei ,  Jwin-Yen Guo ,  Teng-Hung Chang ,  Ming-Jun Hsiao

发明人： Wei-Hsin Wei ,  Jwin-Yen Guo ,  Teng-Hung Chang ,  Ming-Jun Hsiao

IPC分类号： G05F1/10

CPC分类号： H02M3/07 ,  H02M2003/071

摘要： A dual mode charge pump is operable in a first mode or a second mode for providing positive and negative output voltages that can be stabilized by adjusting the charging time of two terminals of a flying capacitor or by adjusting the charging/discharging time of the positive and negative voltage output terminals. The dual mode charge pump can apply to a much wider input supply voltage range with less numbers of power switches, thus requiring less die area and lower costs. Moreover, the dual mode charge pump can precisely define a common mode voltage, thus making the common voltage drift smaller and less load dependent, especially when the output supply voltages are under different load conditions.

摘要翻译： 双模式电荷泵可以在第一模式或第二模式中操作，用于提供正和负输出电压，其可以通过调节飞跨电容器的两个端子的充电时间来稳定，或者通过调节正极和负极的充电/放电时间来稳定 负电压输出端子。 双模式电荷泵可以应用于具有较少数量的电源开关的更宽的输入电源电压范围，因此需要更少的管芯面积和更低的成本。 此外，双模电荷泵可以精确定义共模电压，从而使公共电压漂移越来越小，负载依赖，特别是当输出电源电压处于不同的负载条件下时。

公开(公告)号：US07911267B2

公开(公告)日：2011-03-22

申请号：US12230648

申请日：2008-09-03

申请人： Teng-Hung Chang ,  Jwin-Yen Guo

发明人： Teng-Hung Chang ,  Jwin-Yen Guo

IPC分类号： H03F3/38

CPC分类号： H03F3/2173 ,  H03F3/217

摘要： A sigma-delta class-D amplifier includes a quantizer to quantize an input to produce a digital signal, and an output stage to produce an output according to the digital signal. The quantizer has a smaller step size so that the digital signal has at least five logical levels, and the sigma-delta class-D amplifier is thus improved to have wider stable modulation range and less switching loss.

摘要翻译： Σ-D类D类放大器包括用于量化输入以产生数字信号的量化器，以及根据数字信号产生输出的输出级。 量化器具有较小的步长，使得数字信号具有至少五个逻辑电平，因此改进了Σ-ΔD类放大器以具有更宽的稳定调制范围和更小的开关损耗。

公开(公告)号：US20090174472A1

公开(公告)日：2009-07-09

申请号：US12318659

申请日：2009-01-06

申请人： Teng-Hung Chang ,  Jwin-Yen Guo

发明人： Teng-Hung Chang ,  Jwin-Yen Guo

IPC分类号： H03F3/38

CPC分类号： H03F3/2173 ,  H03F1/34 ,  H03F3/387

摘要： A conversion circuit is provided for a 1.5-bit Σ-Δ class-D amplifier to improve the feedback linearity of the class-D amplifier, by periodically inverting and mixing a first positive feedback signal and a first negative feedback signal from the power stage of the class-D amplifier to generate a second positive feedback signal and a second negative feedback signal with better linearity for feedback control in the class-D amplifier.

摘要翻译： 为1.5位Sigma-Delta D类放大器提供了一个转换电路，通过周期性地反转和混合来自功率级的第一正反馈信号和第一负反馈信号，从而提高D类放大器的反馈线性度 D类放大器产生第二正反馈信号和第二负反馈信号，具有更好的线性度，用于D类放大器中的反馈控制。

公开(公告)号：US20090072897A1

公开(公告)日：2009-03-19

申请号：US12230648

申请日：2008-09-03

申请人： Teng-Hung Chang ,  Jwin-Yen Guo

发明人： Teng-Hung Chang ,  Jwin-Yen Guo

IPC分类号： H03F3/38

CPC分类号： H03F3/2173 ,  H03F3/217

摘要： A sigma-delta class-D amplifier includes a quantizer to quantize an input to produce a digital signal, and an output stage to produce an output according to the digital signal. The quantizer has a smaller step size so that the digital signal has at least five logical levels, and the sigma-delta class-D amplifier is thus improved to have wider stable modulation range and less switching loss.

摘要翻译： Σ-D类D类放大器包括用于量化输入以产生数字信号的量化器，以及根据数字信号产生输出的输出级。 量化器具有较小的步长，使得数字信号具有至少五个逻辑电平，因此改进了Σ-ΔD类放大器以具有更宽的稳定调制范围和更小的开关损耗。