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1. 发明申请

US20120212203A1 METHOD AND APPARATUS FOR OPERATING A DC/DC CONVERTER 有权
标题翻译：用于操作DC / DC转换器的方法和装置
公开(公告)号：US20120212203A1
公开(公告)日：2012-08-23
申请号：US13399077
申请日：2012-02-17
申请人： William Todd HARRISON
发明人： William Todd HARRISON
IPC分类号： G05F1/46
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A method of operating a DC/DC converter in a continuous-conduction mode (CCM) or in a discontinuous-conduction mode (DCM) to produce an output voltage, the DC/DC converter setting a pulse width modulation in CCM based on a COMP signal that varies as a function of the output voltage, the method including capturing the COMP signal utilizing a digital-to-analog converter at a transition between CCM and DCM, and varying a frequency of operation of the DC/DC converter in DCM based on the captured COMP signal.
摘要翻译：一种在连续导通模式（CCM）或不连续导通模式（DCM）中操作DC / DC转换器以产生输出电压的方法，DC / DC转换器基于COMP在CCM中设置脉宽调制信号根据输出电压而变化，该方法包括在CCM和DCM之间的转换时利用数模转换器捕获COMP信号，并且基于在DCM中改变DC / DC转换器的工作频率，基于捕获的COMP信号。

2. 发明申请

US20080158922A1 DISTRIBUTING TIME SLOTS IN PARALLEL CONFIGURED, SWITCHING POWER SUPPLIES 有权
标题翻译：分配配置并行配置的时间段，切换电源
公开(公告)号：US20080158922A1
公开(公告)日：2008-07-03
申请号：US11684017
申请日：2007-03-09
申请人： William Todd Harrison , Xuening Li
发明人： William Todd Harrison , Xuening Li
IPC分类号： H02J1/10
CPC分类号： H02J1/10
摘要： A multi-phase power system including a plurality of Pulse Width Modulation (PWM) controllers is provided, including a first PWM controller and at least one second PWM controller. The first PWM controller is configured to generate at least one first output signal based on a first clock signal, and to insert at least one synchronizing pulse into the first clock signal, the synchronizing pulse having a predetermined characteristic differing from pulses of the first clock signal, and to provide the first clock signal including the synchronizing pulse to the second PWM controller. The second PWM controller is configured to generate at least one second output signal based on the first clock signal, and to synchronize the generation of the first and second output signals using the synchronizing pulse within the first clock signal, thereby maintaining a predetermined phase relationship between the first and second output signals. The synchronizing pulse may be, for example, a skinny pulse or a pulse having a magnitude larger than the pulses of the first clock signal.
摘要翻译：提供了包括多个脉宽调制（PWM）控制器的多相电力系统，包括第一PWM控制器和至少一个第二PWM控制器。第一PWM控制器被配置为基于第一时钟信号产生至少一个第一输出信号，并且将至少一个同步脉冲插入到第一时钟信号中，该同步脉冲具有与第一时钟信号的脉冲不同的预定特性并且向第二PWM控制器提供包括同步脉冲的第一时钟信号。第二PWM控制器被配置为基于第一时钟信号产生至少一个第二输出信号，并且使用第一时钟信号内的同步脉冲同步第一和第二输出信号的产生，从而保持第一时钟信号之间的预定相位关系第一和第二输出信号。同步脉冲可以是例如瘦的脉冲或具有大于第一时钟信号的脉冲的幅度的脉冲。

3. 发明申请

US20080042634A1 DOUBLE-EDGE, STACKABLE PWM WITH BUILT-IN FEEDFORWARD 有权
标题翻译：双边，带内置式前置放大器的堆叠PWM
公开(公告)号：US20080042634A1
公开(公告)日：2008-02-21
申请号：US11695181
申请日：2007-04-02
申请人： William Todd Harrison , Xuening Li , Stefan W. Wiktor , Larry Joe Wofford
发明人： William Todd Harrison , Xuening Li , Stefan W. Wiktor , Larry Joe Wofford
IPC分类号： H02J1/10
CPC分类号： H02M1/084 , H02M2001/0022
摘要： A method and apparatus for use in a multi-phase power system. The power system is of the type having a plurality of Pulse Width Modulation (PWM) controllers including a first PWM controller and at least one second PWM controller. The first PWM controller generates at least one first PWM output signal based on a cyclic signal having a cyclically recurring parameter, and provides the cyclic signal including the cyclically recurring parameter to the second PWM controller. The second PWM controller generates at least one second PWM output signal based on the cyclic signal, and synchronizes the generation of the first and second output signals using the cyclically recurring parameter within the cyclic signal, thereby maintaining a predetermined phase relationship between the first and second output signals. The second PWM controller generates a cyclic, triangular RAMP waveform signal having a series of periods, the RAMP waveform having in each period a signal rising portion and a signal falling portion, and compares the RAMP waveform against an error signal to generate the second PWM signal, the RAMP waveform rising portion and falling portion being generated by charging and discharging, respectively, a capacitor. A feedforward path is provided by setting a charging current for the capacitor that is proportional to an input voltage.
摘要翻译：一种用于多相电力系统的方法和装置。电力系统是具有多个脉冲宽度调制（PWM）控制器的类型，包括第一PWM控制器和至少一个第二PWM控制器。第一PWM控制器基于具有周期性循环参数的循环信号产生至少一个第一PWM输出信号，并且将包括循环周期参数的循环信号提供给第二PWM控制器。第二PWM控制器基于循环信号产生至少一个第二PWM输出信号，并且使用循环信号内的循环循环参数来同步第一和第二输出信号的产生，由此保持第一和第二输出信号之间的预定相位关系输出信号。第二PWM控制器产生具有一系列周期的循环三角形RAMP波形信号，RAMP波形在每个周期中具有信号上升部分和信号下降部分，并且将RAMP波形与误差信号进行比较，以产生第二PWM信号分别由充电和放电产生RAMP波形上升部分和下降部分的电容器。通过设置与输入电压成比例的电容器的充电电流来提供前馈路径。

4. 发明授权

US06791307B2 Non-linear current generator for high-order temperature-compensated references 有权
公开(公告)号：US06791307B2
公开(公告)日：2004-09-14
申请号：US10265171
申请日：2002-10-04
申请人： William Todd Harrison
发明人： William Todd Harrison
IPC分类号： G05F304
CPC分类号： G05F3/267 , G05F3/30
摘要： A current generator generates a non-linear output current whose temperature coefficient exhibits a prescribed non-linear-to-quasi-linear curvature when a control voltage range is restricted. This particular current characteristic enables a voltage reference employing the current generator for high-order curvature correction to produce an output voltage whose variation is extremely flat over its industry standard operational temperature range.

5. 发明授权

US08884598B2 Method and apparatus for operating a DC/DC converter 有权
标题翻译：用于操作DC / DC转换器的方法和装置
公开(公告)号：US08884598B2
公开(公告)日：2014-11-11
申请号：US13399077
申请日：2012-02-17
申请人： William Todd Harrison
发明人： William Todd Harrison
IPC分类号： G05F1/00 , H02M3/156 , H02M1/00
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A method of operating a DC/DC converter in a continuous-conduction mode (CCM) or in a discontinuous-conduction mode (DCM) to produce an output voltage, the DC/DC converter setting a pulse width modulation in CCM based on a COMP signal that varies as a function of the output voltage, the method including capturing the COMP signal utilizing a digital-to-analog converter at a transition between CCM and DCM, and varying a frequency of operation of the DC/DC converter in DCM based on the captured COMP signal.
摘要翻译：一种在连续导通模式（CCM）或不连续导通模式（DCM）中操作DC / DC转换器以产生输出电压的方法，DC / DC转换器基于COMP在CCM中设置脉宽调制信号根据输出电压而变化，该方法包括在CCM和DCM之间的转换时利用数模转换器捕获COMP信号，并且基于在DCM中改变DC / DC转换器的工作频率，基于捕获的COMP信号。

6. 发明授权

US08754699B2 Switched-capacitor filter 有权
标题翻译：开关电容滤波器
公开(公告)号：US08754699B2
公开(公告)日：2014-06-17
申请号：US13288783
申请日：2011-11-03
申请人： Gaurav Bawa , William Todd Harrison
发明人： Gaurav Bawa , William Todd Harrison
IPC分类号： H03K5/00
CPC分类号： H03H19/004
摘要： A filter is implemented as cascaded stages, and in at least one stage all resistances are implemented as double-sampled switched-capacitor circuits. In a variation, at least one resistance is implemented as a double-sampled switched-capacitor T-network. In a variation, in an integrator stage, a resistance is implemented as a transconductance, and the cutoff frequency of the integrator stage scales with a switching frequency of a DC-DC voltage converter.
摘要翻译：滤波器被实现为级联级，并且在至少一级中，所有电阻都被实现为双采样开关电容器电路。在一个变型中，至少一个电阻被实现为双采样开关电容器T网络。在一个变型中，在积分器级中，电阻被实现为跨导，并且积分器级的截止频率以DC-DC电压转换器的开关频率进行放大。

7. 发明申请

US20090284322A1 SYNCHRONOUSLY STACKABLE DOUBLE-EDGE MODULATED PULSE WIDTH MODULATION GENERATORS 有权
标题翻译：同步可堆叠双边调制脉冲宽度调制发生器
公开(公告)号：US20090284322A1
公开(公告)日：2009-11-19
申请号：US12123251
申请日：2008-05-19
申请人： William Todd Harrison , Xuening Li , Stefan Wlodzimierz Wiktor
发明人： William Todd Harrison , Xuening Li , Stefan Wlodzimierz Wiktor
IPC分类号： H03K7/08
CPC分类号： H03K7/08
摘要： Synchronously stackable double-edge modulated pulse width modulation generators are disclosed. An example pulse width modulation generator includes a ramp generator to generate first and second ramp signals that interact to form a virtual ramp signal; and a comparator module coupled to the ramp generator configured to produce a pulse width modulated signal based on a comparison between the virtual ramp signal and an input signal.
摘要翻译：公开了同步可堆叠的双边缘调制脉宽调制发生器。示例性脉冲宽度调制发生器包括斜坡发生器，用于产生相互作用以形成虚拟斜坡信号的第一和第二斜坡信号; 以及耦合到所述斜坡发生器的比较器模块，其被配置为基于所述虚拟斜坡信号和输入信号之间的比较来产生脉宽调制信号。

8. 发明授权

US06643145B1 High resolution digital diode emulator for DC-DC converters 有权
标题翻译：用于DC-DC转换器的高分辨率数字二极管仿真器
公开(公告)号：US06643145B1
公开(公告)日：2003-11-04
申请号：US10206562
申请日：2002-07-26
申请人： William Todd Harrison
发明人： William Todd Harrison
IPC分类号： H02M324
CPC分类号： H02M3/157 , H03F2200/31
摘要： A digital diode emulator (DDE) for a DC-DC converter increments a digital counter with a high frequency clock. For each inductor current cycle, the counter counts between turn-on and turn-off of the output switching circuit's lower switch. When the contents of the counter match a modification of a count latched from the previous inductor current cycle, a turn-off signal is supplied to the control logic. If the previous inductor current cycle's turn-off signal occurred late, the latched count is decremented by one bit. If the previous cycle's turn-off signal occurs early, the latched count is incremented by one bit. Over successive inductor current cycles, the digital diode emulator effectively ‘dithers’ the turn-off time of the switching circuit's lower switch about the zero-crossing point of the inductor current.
摘要翻译：用于DC-DC转换器的数字二极管仿真器（DDE）会以高频时钟递增数字计数器。对于每个电感器电流周期，计数器对输出开关电路的下部开关的导通和关断进行计数。当计数器的内容匹配从先前电感器电流周期锁存的计数的修改时，关断信号被提供给控制逻辑。如果先前的电感电流周期的关断信号发生迟到，则锁存的计数递减1位。如果上一个周期的关断信号提前发生，则锁存的计数增加一位。在连续的电感电流周期中，数字二极管仿真器有效地将开关电路的下部开关的关断时间抖动为电感电流的过零点。

9. 发明授权

US07705689B2 Synchronously stackable double-edge modulated pulse width modulation generators 有权
标题翻译：同步可堆叠双边缘调制脉宽调制发生器
公开(公告)号：US07705689B2
公开(公告)日：2010-04-27
申请号：US12123251
申请日：2008-05-19
申请人： William Todd Harrison , Xuening Li , Stefan Wlodzimierz Wiktor
发明人： William Todd Harrison , Xuening Li , Stefan Wlodzimierz Wiktor
IPC分类号： H03K7/08
CPC分类号： H03K7/08
摘要： Synchronously stackable double-edge modulated pulse width modulation generators are disclosed. An example pulse width modulation generator includes a ramp generator to generate first and second ramp signals that interact to form a virtual ramp signal; and a comparator module coupled to the ramp generator configured to produce a pulse width modulated signal based on a comparison between the virtual ramp signal and an input signal.
摘要翻译：公开了同步可堆叠的双边缘调制脉宽调制发生器。示例性脉冲宽度调制发生器包括斜坡发生器，用于产生相互作用以形成虚拟斜坡信号的第一和第二斜坡信号; 以及耦合到所述斜坡发生器的比较器模块，其被配置为基于所述虚拟斜坡信号和输入信号之间的比较来产生脉宽调制信号。

10. 发明申请

US20130113550A1 SWITCHED-CAPACITOR FILTER 有权
标题翻译：开关电容滤波器
公开(公告)号：US20130113550A1
公开(公告)日：2013-05-09
申请号：US13288783
申请日：2011-11-03
申请人： Gaurav Bawa , William Todd Harrison
发明人： Gaurav Bawa , William Todd Harrison
IPC分类号： H03B1/00
CPC分类号： H03H19/004
摘要： A filter is implemented as cascaded stages, and in at least one stage all resistances are implemented as double-sampled switched-capacitor circuits. In a variation, at least one resistance is implemented as a double-sampled switched-capacitor T-network. In a variation, in an integrator stage, a resistance is implemented as a transconductance, and the cutoff frequency of the integrator stage scales with a switching frequency of a DC-DC voltage converter.
摘要翻译：滤波器被实现为级联级，并且在至少一级中，所有电阻都被实现为双采样开关电容器电路。在一个变型中，至少一个电阻被实现为双采样开关电容器T网络。在一个变型中，在积分器级中，电阻被实现为跨导，并且积分器级的截止频率以DC-DC电压转换器的开关频率进行放大。

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