公开(公告)号：US08004259B2

公开(公告)日：2011-08-23

申请号：US12256300

申请日：2008-10-22

申请人： Eric Soenen ,  Alan Roth ,  Martin Kinyua ,  Justin Shi

发明人： Eric Soenen ,  Alan Roth ,  Martin Kinyua ,  Justin Shi

IPC分类号： G05F1/40

CPC分类号： H02M3/1588 ,  H02M2001/0012 ,  Y02B70/1466

摘要： A system and method for controlling a power converter is presented. An embodiment comprises an analog differential circuit connected to an analog-to-digital converter, and comparing the digital error signal to at least a first threshold value. If the digital error signal is less than the first threshold value, a pulse is generated to control the power converter. Another embodiment includes multiple thresholds that may be compared against the digital error signal.

摘要翻译： 提出了一种用于控制功率转换器的系统和方法。 一个实施例包括连接到模拟 - 数字转换器的模拟差分电路，并将数字误差信号与至少第一阈值进行比较。 如果数字误差信号小于第一阈值，则产生脉冲以控制功率转换器。 另一实施例包括可与数字误差信号进行比较的多个阈值。

公开(公告)号：US07990215B2

公开(公告)日：2011-08-02

申请号：US12858310

申请日：2010-08-17

申请人： Eric Soenen ,  Alan Roth ,  Justin Shi ,  Martin Kinyua

发明人： Eric Soenen ,  Alan Roth ,  Justin Shi ,  Martin Kinyua

IPC分类号： H03F3/217

CPC分类号： H03F3/2173

摘要： Circuit and method for a Class D amplifier. In one exemplary embodiment, an audio amplifier is disclosed. A closed loop configuration for driving high and low side driver transistors is provided, each circuit is compatible with advanced sub micron semiconductor processes. The analog time varying input is coupled to one input of a sigma delta analog to digital converter. A feedback signal from the output is also input to the analog to digital converter. A bit stream is output by the analog to digital converter. A decimator receives this bit stream and downconverts the samples to digital values at a lower frequency. A digital filter with adaptable coefficients is used to filter that signal and a digital pulse width modulator then develops an analog differential PWM signal. A predriver inputs the PWM signal and derives the output gating signals to control the high and low side drivers of a Class D amplifier.

摘要翻译： D类放大器的电路和方法。 在一个示例性实施例中，公开了一种音频放大器。 提供用于驱动高侧和低侧驱动晶体管的闭环配置，每个电路与先进的亚微米半导体工艺兼容。 模拟时变输入耦合到Σ-Δ模数转换器的一个输入端。 来自输出的反馈信号也被输入到模数转换器。 位流由模数转换器输出。 抽取器接收该位流，并以较低的频率将样本下变频为数字值。 使用具有适应系数的数字滤波器来对该信号进行滤波，并且数字脉宽调制器然后开发模拟差分PWM信号。 预驱动器输入PWM信号并导出输出门控信号以控制D类放大器的高侧和低侧驱动器。

公开(公告)号：US09479051B2

公开(公告)日：2016-10-25

申请号：US13340746

申请日：2011-12-30

申请人： Chien-Chung Tseng ,  Eric Soenen ,  Alan Roth ,  Justin Shi

发明人： Chien-Chung Tseng ,  Eric Soenen ,  Alan Roth ,  Justin Shi

IPC分类号： G05F1/577 ,  H02M3/158 ,  H02M1/00

CPC分类号： H02M3/158 ,  H02M2001/009

摘要： A DC to DC converter includes a switching circuit and a controller. The switching circuit includes an inductor coupled to first and second voltage supply nodes and to a plurality of output loads. The controller is configured to monitor a current through the inductor and to selectively couple the inductor to each of the plurality of output loads such that at least one of the following criteria is met: 1) an average current through the inductor is minimized for the particular output loads coupled to the switching circuit, or 2) minimize a number of times the switching circuit is switched during a charging period for the particular output loads coupled to the switching circuit.

摘要翻译： DC-DC转换器包括开关电路和控制器。 开关电路包括耦合到第一和第二电压供应节点和耦合到多个输出负载的电感器。 控制器被配置为监测通过电感器的电流并且选择性地将电感器耦合到多个输出负载中的每一个，使得满足以下标准中的至少一个：1）通过电感器的平均电流对于特定的 耦合到开关电路的输出负载，或2）在耦合到开关电路的特定输出负载的充电周期期间最小化开关电路切换的次数。

公开(公告)号：US08324955B2

公开(公告)日：2012-12-04

申请号：US13051343

申请日：2011-03-18

申请人： Alan Roth ,  Ying-Chih Hsu ,  Justin Shi ,  Eric Soenen

发明人： Alan Roth ,  Ying-Chih Hsu ,  Justin Shi ,  Eric Soenen

IPC分类号： H03L5/00

CPC分类号： H03K19/018507 ,  H03K3/037

摘要： A level shifter receives an input voltage signal and produces an output voltage signal. The level shifter includes a first inverter, configured to operate at a potential difference between a first voltage V1 and a second voltage V2. The output from the invert is capacitively coupled to an input of a latch circuit via a capacitor. The capacitor has a first terminal connected to the output terminal of the first inverter, and further has a second terminal. The level shifter has a resistor connected to a third voltage V3 and to the capacitor for tying the input to the latch circuit to a desired voltage. The latch circuit is configured to operate at a potential difference between a fourth voltage V4 and a fifth voltage V5. The latch has an input node connected to the resistor and the capacitor, and further has an output node connected to an output node of the level shifter.

摘要翻译： 电平移位器接收输入电压信号并产生输出电压信号。 电平移位器包括第一反相器，其被配置为在第一电压V1和第二电压V2之间的电位差下工作。 反相器的输出通过电容电容耦合到锁存电路的输入端。 电容器具有连接到第一反相器的输出端子的第一端子，并且还具有第二端子。 电平移位器具有连接到第三电压V3的电阻器和用于将输入端连接到锁存电路的电容器以达到期望的电压。 闩锁电路被配置为在第四电压V4和第五电压V5之间的电位差下工作。 锁存器具有连接到电阻器和电容器的输入节点，并且还具有连接到电平移位器的输出节点的输出节点。

公开(公告)号：US08618784B2

公开(公告)日：2013-12-31

申请号：US12750149

申请日：2010-03-30

申请人： Justin Shi ,  Alan Roth ,  Eric Soenen

发明人： Justin Shi ,  Alan Roth ,  Eric Soenen

IPC分类号： G05F1/00

CPC分类号： H02M1/08 ,  H02M3/07

摘要： A regulator control circuit includes a high side driver that is configured to receive a supply voltage. A capacitor is configured to store charges. A first transistor is coupled between the capacitor at a first node and a gate of a high side driver at a second node. The first node is capable of being boosted to a voltage to operate the first transistor at a saturation mode for a charge sharing between the first node and the second node so as to substantially turn on the high side driver.

摘要翻译： 调节器控制电路包括被配置为接收电源电压的高侧驱动器。 配置电容器来存储电荷。 第一晶体管耦合在第一节点处的电容器和第二节点处的高侧驱动器的栅极之间。 第一节点能够被升压到电压以在饱和模式下操作第一晶体管，用于在第一节点和第二节点之间的电荷共享，以便基本上接通高侧驱动器。

公开(公告)号：US08441235B2

公开(公告)日：2013-05-14

申请号：US13032956

申请日：2011-02-23

申请人： Justin Shi ,  Eric Soenen ,  Alan Roth

发明人： Justin Shi ,  Eric Soenen ,  Alan Roth

IPC分类号： H02J7/00 ,  H03M3/00

CPC分类号： H02J7/0073 ,  H02M3/157

摘要： A digital controlled battery charger comprises a power converter, a voltage sensor, a current senor, a mode selector and a digital controller. The voltage sensor and current sensor detect the voltage of a rechargeable battery and the current flowing through the rechargeable battery respectively. The mode selector selects a feedback signal from either the output of the voltage sensor or the output of the current sensor. The digital controller receives the selected feedback signal and generates a pulse width modulated signal for the power converter. Additionally, the digital controller is capable of dynamically adjusting its coefficients so that the control loop can maintain a stable system when the battery charger operates in different battery charging phases.

摘要翻译： 数字控制电池充电器包括功率转换器，电压传感器，电流传感器，模式选择器和数字控制器。 电压传感器和电流传感器分别检测可充电电池的电压和流过可充电电池的电流。 模式选择器从电压传感器的输出或电流传感器的输出中选择反馈信号。 数字控制器接收所选择的反馈信号并产生用于功率转换器的脉宽调制信号。 此外，数字控制器能够动态地调整其系数，使得当电池充电器在不同的电池充电阶段中操作时，控制回路可以维持稳定的系统。

公开(公告)号：US20130082668A1

公开(公告)日：2013-04-04

申请号：US13340746

申请日：2011-12-30

申请人： Chien-Chung Tseng ,  Eric Soenen ,  Alan Roth ,  Justin Shi

发明人： Chien-Chung Tseng ,  Eric Soenen ,  Alan Roth ,  Justin Shi

IPC分类号： G05F1/577

CPC分类号： H02M3/158 ,  H02M2001/009

摘要： A DC to DC converter includes a switching circuit and a controller. The switching circuit includes an inductor coupled to first and second voltage supply nodes and to a plurality of output loads. The controller is configured to monitor a current through the inductor and to selectively couple the inductor to each of the plurality of output loads such that at least one of the following criteria is met: 1) an average current through the inductor is minimized for the particular output loads coupled to the switching circuit, or 2) minimize a number of times the switching circuit is switched during a charging period for the particular output loads coupled to the switching circuit.

摘要翻译： DC-DC转换器包括开关电路和控制器。 开关电路包括耦合到第一和第二电压供应节点和耦合到多个输出负载的电感器。 控制器被配置为监测通过电感器的电流并且选择性地将电感器耦合到多个输出负载中的每一个，使得满足以下标准中的至少一个：1）通过电感器的平均电流对于特定的 耦合到开关电路的输出负载，或2）在耦合到开关电路的特定输出负载的充电周期期间最小化开关电路切换的次数。

公开(公告)号：US20110089916A1

公开(公告)日：2011-04-21

申请号：US12857092

申请日：2010-08-16

申请人： Eric Soenen ,  Alan Roth ,  Justin Shi ,  Ying-Chih Hsu ,  Guang-Cheng Wang ,  Wen-Shen Chou

发明人： Eric Soenen ,  Alan Roth ,  Justin Shi ,  Ying-Chih Hsu ,  Guang-Cheng Wang ,  Wen-Shen Chou

IPC分类号： G05F1/10

CPC分类号： G05F1/575 ,  H02M3/07 ,  H02M2001/0045

摘要： Embodiments of the invention are related to LDO regulators. In an embodiment, an amplifier drives the gate of a master source follower and of at least one slave source follower to form an LDO regulator. In an alternative embodiment, a charge pump drives the master source follower to form the regulator. Additional slave source followers may be used in conjunction with the charge pump and the master source follower to improve the regulator performance. Other embodiments are also disclosed.

摘要翻译： 本发明的实施例涉及LDO调节器。 在一个实施例中，放大器驱动主源跟随器的栅极和至少一个从源极跟随器的栅极以形成LDO调节器。 在替代实施例中，电荷泵驱动主源极跟随器以形成调节器。 附加的从源跟随器可以与电荷泵和主源极跟随器一起使用，以改善调节器的性能。 还公开了其他实施例。

公开(公告)号：US20100045376A1

公开(公告)日：2010-02-25

申请号：US12197967

申请日：2008-08-25

申请人： Eric Soenen ,  Alan Roth ,  Justin Shi

发明人： Eric Soenen ,  Alan Roth ,  Justin Shi

IPC分类号： H03F3/217

CPC分类号： H03F3/2173

摘要： Circuit and method for a Class D amplifier. In one exemplary embodiment, an audio amplifier is disclosed. A closed loop configuration for driving high and low side driver transistors is provided, each circuit is compatible with advanced sub micron semiconductor processes. The analog time varying input is coupled to one input of a sigma delta analog to digital converter. A feedback signal from the output is also input to the analog to digital converter. A bit stream is output by the analog to digital converter. A decimator receives this bit stream and downconverts the samples to digital values at a lower frequency. A digital filter with adaptable coefficients is used to filter that signal and a digital pulse width modulator then develops an analog differential PWM signal. A predriver inputs the PWM signal and derives the output gating signals to control the high and low side drivers of a Class D amplifier.

摘要翻译： D类放大器的电路和方法。 在一个示例性实施例中，公开了一种音频放大器。 提供用于驱动高侧和低侧驱动晶体管的闭环配置，每个电路与先进的亚微米半导体工艺兼容。 模拟时变输入耦合到Σ-Δ模数转换器的一个输入端。 来自输出的反馈信号也被输入到模数转换器。 位流由模数转换器输出。 抽取器接收该位流，并以较低的频率将样本下变频为数字值。 使用具有适应系数的数字滤波器来对该信号进行滤波，并且数字脉宽调制器然后开发模拟差分PWM信号。 预驱动器输入PWM信号并导出输出门控信号以控制D类放大器的高侧和低侧驱动器。

公开(公告)号：US08598854B2

公开(公告)日：2013-12-03

申请号：US12857092

申请日：2010-08-16

申请人： Eric Soenen ,  Alan Roth ,  Justin Shi ,  Ying-Chih Hsu ,  Guang-Cheng Wang ,  Wen-Shen Chou

发明人： Eric Soenen ,  Alan Roth ,  Justin Shi ,  Ying-Chih Hsu ,  Guang-Cheng Wang ,  Wen-Shen Chou

IPC分类号： G05F1/613 ,  H02M3/18

CPC分类号： G05F1/575 ,  H02M3/07 ,  H02M2001/0045

摘要： An amplifier drives the gate of a master source follower and of at least one slave source follower to form a low-dropout (LDO) regulator. Alternatively, a charge pump drives the master source follower to form the regulator. Additional slave source followers may be used in conjunction with the charge pump and the master source follower to improve the regulator performance.

摘要翻译： 放大器驱动主源跟随器和至少一个从源极跟随器的栅极以形成低压差（LDO）调节器。 或者，电荷泵驱动主源极跟随器以形成调节器。 附加的从源跟随器可以与电荷泵和主源极跟随器一起使用，以改善调节器的性能。