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1. 发明授权

US07285942B2 Single-transistor-control low-dropout regulator 有权
标题翻译：单晶体管控制低压差稳压器
公开(公告)号：US07285942B2
公开(公告)日：2007-10-23
申请号：US11369893
申请日：2006-03-07
申请人： Tsz Yin Man , Chi Yat Leung , Ka Nang Leung , Philip Kwok Tai Mok , John Man Sun Chan
发明人： Tsz Yin Man , Chi Yat Leung , Ka Nang Leung , Philip Kwok Tai Mok , John Man Sun Chan
IPC分类号： G05F1/40
CPC分类号： G05F1/575
摘要： A low-dropout regulator with a single-transistor-control providing improved transient response and stability is disclosed. The single-transistor-control provides a dynamic resistance at the output of the regulator for minimizing undershoot and overshoot, and hence improves transient response. Since the single-control transistor reduces the output resistance of the regulator, the output pole is pushed to a sufficiently high frequency without affecting stability. Therefore, the limited choice of combinations of the output capacitance and its equivalent-series-resistance is substantially relaxed.
摘要翻译：公开了具有提供改进的瞬态响应和稳定性的单晶体管控制的低压差稳压器。单晶体管控制在稳压器的输出端提供动态电阻，以最大限度地减少下冲和过冲，从而提高瞬态响应。由于单控晶体管降低了稳压器的输出电阻，所以输出极被推到足够高的频率而不影响稳定性。因此，输出电容和等效串联电阻的组合的有限选择基本上放宽。

2. 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。

3. 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。

4. 再颁专利

USRE42335E1 Single transistor-control low-dropout regulator 有权
标题翻译：单晶体管控制低压差稳压器
公开(公告)号：USRE42335E1
公开(公告)日：2011-05-10
申请号：US12605206
申请日：2009-10-23
申请人： Tsz Yin Man , Chi Yat Leung , Ka Nang Leung , Philip Kwok Tai Mok , John Man Sun Chan
发明人： Tsz Yin Man , Chi Yat Leung , Ka Nang Leung , Philip Kwok Tai Mok , John Man Sun Chan
IPC分类号： G05F1/40
CPC分类号： G05F1/575
摘要： A low-dropout regulator with a single-transistor-control providing improved transient response and stability is disclosed. The single-transistor-control provides a dynamic resistance at the output of the regulator for minimizing undershoot and overshoot, and hence improves transient response. Since the single-control transistor reduces the output resistance of the regulator, the output pole is pushed to a sufficiently high frequency without affecting stability. Therefore, the limited choice of combinations of the output capacitance and its equivalent-series-resistance is substantially relaxed.
摘要翻译：公开了具有提供改进的瞬态响应和稳定性的单晶体管控制的低压差稳压器。单晶体管控制在稳压器的输出端提供动态电阻，以最大限度地减少下冲和过冲，从而提高瞬态响应。由于单控晶体管降低了稳压器的输出电阻，所以输出极被推到足够高的频率而不影响稳定性。因此，输出电容和等效串联电阻的组合的有限选择基本上放宽。

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