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1. 再颁专利

USRE42116E1 Low dropout regulator capable of on-chip implementation 有权
标题翻译：低压差稳压器，能够进行片上实现
公开(公告)号：USRE42116E1
公开(公告)日：2011-02-08
申请号：US12425317
申请日：2009-04-16
申请人： Ka Nang Leung , Kwok Tai Philip Mok
发明人： Ka Nang Leung , Kwok Tai Philip Mok
IPC分类号： G05F1/10 , G05F3/02
CPC分类号： G05F1/575
摘要： A low-dropout regulator comprises a high-gain error amplifier having a differential input stage and a single-ended output, a high-swing high-positive-gain second stage with input connecting to the output of the error amplifier and a single-ended output, a p-type MOS transistor with gate terminal connecting to the output of the second stage, source terminal connecting to the supply voltage, and drain terminal to the output of the low-dropout regulator. A first-order high-pass feedback network connects the output of the low-dropout regulator and the positive input of the error amplifier, and a damping-factor-control means comprising a negative gain stage with a feedback capacitor connects the input and output of this gain stage. A capacitor is connected between the output of the error amplifier and the output of the low-dropout regulator, while a voltage reference connects to the negative input of the error amplifier. The regulator does not require an off-chip capacitor for stability and has improved load transient response and power supply rejection ratio.
摘要翻译：低压差调节器包括具有差分输入级和单端输出的高增益误差放大器，具有连接到误差放大器的输出的输入的高摆幅高正增益第二级和单端输出，p型MOS晶体管，栅极端子连接到第二级的输出，源极端子连接到电源电压，漏极端子连接到低压差稳压器的输出。一阶高通反馈网络连接低压差稳压器的输出和误差放大器的正输入端，并且包括具有反馈电容器的负增益级的阻尼因子控制装置将输入和输出这个增益阶段。电容器连接在误差放大器的输出端和低压差稳压器的输出端之间，而参考电压连接到误差放大器的负输入端。调节器不需要片外电容器的稳定性，并且具有改善的负载瞬态响应和电源抑制比。

2. 发明授权

US07633778B2 Switched-capacitor regulators 有权
标题翻译：开关电容调节器
公开(公告)号：US07633778B2
公开(公告)日：2009-12-15
申请号：US12059975
申请日：2008-03-31
申请人： Kwok Tai Philip Mok , Hoi Lee
发明人： Kwok Tai Philip Mok , Hoi Lee
IPC分类号： H02M3/18
CPC分类号： H02M3/07
摘要： A switched-capacitor regulator is provided for regulating the output voltage of a voltage supply. The switched-capacitor regulator includes a supply input terminal capable of receiving a supply voltage, two or more flying capacitors, a regulation switch located between each flying capacitor and the supply input terminal, and a voltage control circuit. The activity of the regulation switches is controlled by the voltage control circuit. In one embodiment of the invention, the voltage control circuit includes a feedback resistance area having one or more feedback resistors located between the output of the flying capacitors and a ground terminal, a first gain stage connected to the feedback resistance area, and two or more second switchable gain stages, which are each connected to a regulation switch and the first gain stage. The switched-capacitor regulator operates in pseudo-continuous regulator mode using three-stage switchable operational amplifiers with time-multiplexed pole-splitting compensation.
摘要翻译：提供开关电容调节器用于调节电压源的输出电压。开关电容调节器包括能够接收电源电压的电源输入端子，两个或更多个飞越电容器，位于每个飞行电容器和电源输入端子之间的调节开关以及电压控制电路。调节开关的动作由电压控制电路控制。在本发明的一个实施例中，电压控制电路包括反馈电阻区域，其具有位于飞行电容器的输出端与接地端子之间的一个或多个反馈电阻器，连接到反馈电阻区域的第一增益级和两个或更多个第二可切换增益级，其分别连接到调节开关和第一增益级。开关电容稳压器采用三段可切换运算放大器进行伪连续稳压模式，具有时分复用极分解补偿功能。

3. 发明授权

US07619395B2 End-point prediction scheme for voltage regulators 失效
标题翻译：电压调节器的终点预测方案
公开(公告)号：US07619395B2
公开(公告)日：2009-11-17
申请号：US11457401
申请日：2006-07-13
申请人： Kwok Tai Philip Mok , Man Siu , Ka Nang Leung
发明人： Kwok Tai Philip Mok , Man Siu , Ka Nang Leung
IPC分类号： G05F1/613
CPC分类号： H02M3/156 , H02M2001/0025
摘要： An End-Point Prediction scheme is described for voltage-mode buck regulators to generate adaptive output voltage to integrated-circuit systems. Internal nodal voltages of the regulator controller are predicted and set automatically by the proposed algorithms and circuits. The settling time of the regulator can therefore be significantly reduced for faster dynamic responses, even with dominant-pole compensation.
摘要翻译：描述了用于电压模式降压调节器以产生对集成电路系统的自适应输出电压的端点预测方案。调节器控制器的内部节点电压由所提出的算法和电路自动预测和设置。因此，即使采用显性极补偿，调节器的稳定时间也可以显着降低，以实现更快的动态响应。

4. 发明授权

US08217637B2 Frequency compensation based on dual signal paths for voltage-mode switching regulators 有权
标题翻译：基于电压模式开关稳压器双信号路径的频率补偿
公开(公告)号：US08217637B2
公开(公告)日：2012-07-10
申请号：US12346185
申请日：2008-12-30
申请人： Yip Sum Tsui , Ying Wu , Kwok Tai Philip Mok
发明人： Yip Sum Tsui , Ying Wu , Kwok Tai Philip Mok
IPC分类号： G05F1/00
CPC分类号： H02M3/156 , H02M3/1588 , Y02B70/1466
摘要： A frequency compensation method for voltage-mode switching regulators is disclosed. A lowpass filter and a bandpass filter are employed in the two signal paths into the dual inputs of PWM comparators. In one embodiment, two zeros are generated to compensate for the L-C output filter poles. Stable operation, low output voltage ripple and fast load transient response are achieved; while the power consumption of error amplifier and the area for implementing on-chip passive components are greatly reduced.
摘要翻译：公开了一种用于电压模式开关调节器的频率补偿方法。在两个信号路径中采用低通滤波器和带通滤波器进入PWM比较器的双输入。在一个实施例中，产生两个零以补偿L-C输出滤波器极。实现稳定运行，低输出电压纹波和快速负载瞬态响应; 而误差放大器的功耗和实现片上无源器件的面积大大降低。

5. 发明申请

US20090174440A1 FREQUENCY-HOPPING PULSE-WIDTH MODULATOR FOR SWITCHING REGULATORS 有权
标题翻译：用于切换稳压器的频率调制脉冲宽度调制器
公开(公告)号：US20090174440A1
公开(公告)日：2009-07-09
申请号：US12346069
申请日：2008-12-30
申请人： Tsz Yin MAN , Kwok Tai Philip MOK , Man Sun John CHAN
发明人： Tsz Yin MAN , Kwok Tai Philip MOK , Man Sun John CHAN
IPC分类号： H03B23/00
CPC分类号： H02M1/44 , H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A frequency-hopping pulse-width modulator is disclosed, which facilitates a switching regulator to use smaller-size inductive and capacitive elements, to have an improved power efficiency at light load, as well as predictable spectrum at different load levels. The improved modulator automatically determines the switching frequency of a switching regulator according to the load current delivered by the switching regulator from a number of pre-defined frequencies, which are all multiples of a fundamental frequency. By designing the maximum switching frequency of frequency-hopping pulse-width modulator in the MHz range, a switching regulator is able to use smaller-size inductive and capacitive elements. Light-load efficiency of the switching regulator with the frequency-hopping pulse-width modulator is also greatly improved as switching frequency of such switching regulator is reduced with decreased load current. More importantly, spectrum of a switching regulator with the frequency-hopping pulse-width modulator is as predictable as spectrum of a switching regulator with a conventional pulse-width modulator operated at the fundamental frequency.
摘要翻译：公开了一种跳频脉冲宽度调制器，其有助于开关调节器使用较小尺寸的电感和电容元件，以在轻负载下具有改进的功率效率，以及在不同负载水平下具有可预测的频谱。改进的调制器根据开关稳压器从多个预定频率（其基本频率的倍数）输出的负载电流自动确定开关稳压器的开关频率。通过在MHz范围内设计跳频脉宽调制器的最大开关频率，开关稳压器能够使用较小尺寸的电感和电容元件。具有跳频脉宽调制器的开关稳压器的轻负载效率也大大提高，因为这种开关调节器的开关频率随着负载电流的减小而减小。更重要的是，具有跳频脉冲宽度调制器的开关稳压器的频谱与具有在基频操作的常规脉宽调制器的开关调节器的频谱一样可预测。

6. 发明授权

US06208206B1 Frequency compensation techniques for low-power multistage amplifiers 有权
标题翻译：低功率多级放大器的频率补偿技术
公开(公告)号：US06208206B1
公开(公告)日：2001-03-27
申请号：US09247942
申请日：1999-02-11
申请人： Ka Nang Leung , Kwok Tai Philip Mok , Wing Hung Ki , Kin On Johnny Sin
发明人： Ka Nang Leung , Kwok Tai Philip Mok , Wing Hung Ki , Kin On Johnny Sin
IPC分类号： H03F144
CPC分类号： H03F3/3023 , H03F1/086
摘要： A three stage amplifier is disclosed provided with a novel frequency compensation technique. Only a single feedback loop with a single compensation capacitance is provided. Instead of a conventional nested compensation technique, damping factor control is provided by means of a fourth gain stage in order to stabilize the amplifier. The resulting amplifier is particularly useful to drive large capacitive loads for low-voltage low-power applications.
摘要翻译：公开了一种具有新型频率补偿技术的三级放大器。仅提供具有单个补偿电容的单个反馈回路。代替常规的嵌套补偿技术，借助于第四增益级来提供阻尼因子控制，以便稳定放大器。所产生的放大器特别适用于驱动低电压低功耗应用的大容性负载。

7. 发明授权

US08624429B2 Single-inductor-multiple-output regulator with auto-hopping control and the method of use 有权
标题翻译：具有自跳频控制的单电感多输出稳压器及其使用方法
公开(公告)号：US08624429B2
公开(公告)日：2014-01-07
申请号：US12840149
申请日：2010-07-20
申请人： Xiaocheng Jing , Kwok Tai Philip Mok
发明人： Xiaocheng Jing , Kwok Tai Philip Mok
IPC分类号： H02J1/10 , H02J7/34 , H02J3/38
CPC分类号： H02M3/158 , H02M2001/009 , Y10T307/305 , Y10T307/406 , Y10T307/469 , Y10T307/707
摘要： A switching regulator is provided herein comprising a voltage source, a plurality of switching elements, an inductive element, and a controller. The controller coordinates the plurality of switching elements as to sequentially and periodically switching the inductive element to generate a plurality of regulated DC voltages. The controller adjusts a switching frequency of the regulator in accordance with at least one characteristic of a load current.
摘要翻译：本文提供的开关调节器包括电压源，多个开关元件，电感元件和控制器。所述控制器对所述多个开关元件进行协调以依次切换感应元件并周期性地切换以产生多个调节的DC电压。控制器根据负载电流的至少一个特性来调节调节器的开关频率。

8. 发明授权

US06172466B2 Phase-controlled dimmable ballast 有权
标题翻译：相控调光镇流器
公开(公告)号：US06172466B2
公开(公告)日：2001-01-09
申请号：US09249106
申请日：1999-02-12
申请人： Wing Hung Ki , Kwok Tai Philip Mok , Kin On Johnny Sin
发明人： Wing Hung Ki , Kwok Tai Philip Mok , Kin On Johnny Sin
IPC分类号： H05B3702
CPC分类号： H05B41/3921 , H05B41/3925 , Y10S315/04
摘要： A method and apparatus are disclosed for the dimming control of a fluorescent lamp driven by an electronic ballast. A small portion (eg less than 15°) of the phase of the input supply voltage is removed, and the precise amount of the phase removed is used to generate a switching signal that controls the switching frequency of the electronic ballast and hence the light power output. The switching frequency is generated by producing pulses of a width proportional to the amount of phase removed, integrating the pulses to produce a voltage proportional to the phase removed, converting that voltage to a current that varies with a frequency depending on the voltage, and using that varying current to generate the switching frequency.
摘要翻译：公开了一种用于由电子镇流器驱动的荧光灯的调光控制的方法和装置。去除输入电源电压的相位的一小部分（例如小于15°），并且使用去除的相位的精确量来产生控制电子镇流器的开关频率并因此控制光功率的开关信号输出。开关频率通过产生与去除的相位量成比例的宽度的脉冲来产生，对脉冲进行积分以产生与去除的相位成正比的电压，将该电压转换成随着电压而变化的电流，并使用该电流变化以产生开关频率。

9. 发明授权

US08760141B2 Frequency-hopping pulse-width modulator for switching regulators 有权
标题翻译：用于开关稳压器的跳频脉冲宽度调制器
公开(公告)号：US08760141B2
公开(公告)日：2014-06-24
申请号：US12346069
申请日：2008-12-30
申请人： Tsz Yin Man , Kwok Tai Philip Mok , Man Sun John Chan
发明人： Tsz Yin Man , Kwok Tai Philip Mok , Man Sun John Chan
IPC分类号： G05F1/40
CPC分类号： H02M1/44 , H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A frequency-hopping pulse-width modulator is disclosed, which facilitates a switching regulator to use smaller-size inductive and capacitive elements, to have an improved power efficiency at light load, as well as predictable spectrum at different load levels. The improved modulator automatically determines the switching frequency of a switching regulator according to the load current delivered by the switching regulator from a number of pre-defined frequencies, which are all multiples of a fundamental frequency. By designing the maximum switching frequency of frequency-hopping pulse-width modulator in the MHz range, a switching regulator is able to use smaller-size inductive and capacitive elements. Light-load efficiency of the switching regulator with the frequency-hopping pulse-width modulator is also greatly improved as switching frequency of such switching regulator is reduced with decreased load current. More importantly, spectrum of a switching regulator with the frequency-hopping pulse-width modulator is as predictable as spectrum of a switching regulator with a conventional pulse-width modulator operated at the fundamental frequency.
摘要翻译：公开了一种跳频脉冲宽度调制器，其有助于开关调节器使用较小尺寸的电感和电容元件，以在轻负载下具有改进的功率效率，以及在不同负载水平下具有可预测的频谱。改进的调制器根据开关稳压器从多个预定频率（其基本频率的倍数）输出的负载电流自动确定开关稳压器的开关频率。通过在MHz范围内设计跳频脉宽调制器的最大开关频率，开关稳压器能够使用较小尺寸的电感和电容元件。具有跳频脉宽调制器的开关稳压器的轻负载效率也大大提高，因为这种开关调节器的开关频率随着负载电流的减小而减小。更重要的是，具有跳频脉冲宽度调制器的开关稳压器的频谱与具有在基频操作的常规脉宽调制器的开关调节器的频谱一样可预测。

10. 发明申请

US20120286576A1 Single-inductor-multiple-output regulator with synchronized current mode hysteretic control 有权
标题翻译：具有同步电流模式迟滞控制的单电感多输出稳压器
公开(公告)号：US20120286576A1
公开(公告)日：2012-11-15
申请号：US13461576
申请日：2012-05-01
申请人： Xiaocheng Jing , Kwok Tai Philip Mok
发明人： Xiaocheng Jing , Kwok Tai Philip Mok
IPC分类号： H02J1/00 , G05F1/46
CPC分类号： H02M3/156 , H02M3/158 , H02M2001/009 , Y10T307/50
摘要： A single-inductor-multiple-output (SIMO) DC-DC switching regulator with a current-mode hysteretic control technique having an ultra-fast transient response to suppress cross-regulation is provided. The DC-DC switching regulator includes: at least one power source for providing electrical energy; an inductive energy storage element for accumulating and transferring the electrical energy from the input power source to a plurality of outputs; a main switch for controlling energy accumulation at the inductive energy storage element; a plurality of output switches for controlling energy transfer to each of the plurality of outputs; a freewheel switch coupled in parallel with the inductive energy storage element; and a controller, configured to coordinate the plurality of output switches and the main switch.
摘要翻译：提供具有电流模式迟滞控制技术的单电感多输出（SIMO）DC-DC开关稳压器，具有超快速瞬态响应以抑制交叉调节。 DC-DC开关调节器包括：用于提供电能的至少一个电源; 用于将电能从输入电源累积并传送到多个输出的感应能量存储元件; 用于控制感应能量存储元件处的能量累积的主开关; 多个输出开关，用于控制对所述多个输出中的每一个的能量传递; 与感应能量存储元件并联耦合的续流开关; 以及控制器，被配置为协调所述多个输出开关和所述主开关。

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