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    • 1. 发明授权
    • Efficiency regulation for LED illumination
    • LED照明效率调节
    • US08686654B2
    • 2014-04-01
    • US13325707
    • 2011-12-14
    • Stephen W. Hawley
    • Stephen W. Hawley
    • H05B37/02
    • H05B33/0815H05B33/0824
    • Various embodiments of the present invention relate to a switch-mode regulator, and more particularly, to systems, devices and methods of using a switch-mode regulator to regulate an LED current to improve overall LED system efficacy and suppress power consumption of a dimmable LED illumination system. Both high and moderate brightness modes are implemented in an LED driver based on the switch-mode regulator. In the high brightness mode, the LED current is larger than a preferred LED current. In the moderate brightness mode, the LED current is smaller than the preferred LED current, and the LED driver sustains the preferred driver efficiency while the LED current remains as a direct current. Such a switch-mode power supply or regulator may also be used in applications other than the LED illumination system.
    • 本发明的各种实施例涉及开关模式调节器,更具体地,涉及使用开关模式调节器调节LED电流以提高整体LED系统功效并抑制可调光LED的功耗的系统,设备和方法 照明系统。 基于开关模式调节器的LED驱动器实现高亮度和中等亮度模式。 在高亮度模式下,LED电流大于优选的LED电流。 在中等亮度模式下,LED电流小于优选的LED电流,LED驱动器维持优选的驱动效率,同时LED电流保持为直流电流。 这种开关模式电源或调节器也可以用在除了LED照明系统之外的应用中。
    • 2. 发明申请
    • Control Method for DC/DC Converters and Switching Regulators
    • DC / DC转换器和开关稳压器的控制方法
    • US20100045245A1
    • 2010-02-25
    • US12194291
    • 2008-08-19
    • Stephen W. Hawley
    • Stephen W. Hawley
    • G05F1/00
    • H02M3/1582
    • A circuit for controlling a switching regulator includes a switching control circuit configured to operate one or more switches in a repeating sequence that includes a first state in which an inductor is coupled between an input supply and a load so that an increasing current passes from the input supply through the inductor and a second state in which the inductor is coupled between ground and the load so that a decreasing current passes through the inductor to the load; a circuit configured to cause the switching circuit to select the second state when the magnitude of the increasing current has reached a predetermined level; and a timing circuit configured to cause the switching circuit to select the second state for a predetermined period of time after the initiation of each second first.
    • 用于控制开关调节器的电路包括开关控制电路,其被配置为以重复序列操作一个或多个开关,所述重复序列包括电感器耦合在输入电源和负载之间的第一状态,使得增加的电流从输入 通过电感器供电和第二状态,其中电感器耦合在地和负载之间,使得降低的电流通过电感器到达负载; 配置为当所述增加电流的大小达到预定水平时使所述开关电路选择所述第二状态的电路; 以及定时电路,被配置为使得所述开关电路在每个第二开始之后的预定时间段内选择所述第二状态。
    • 3. 发明授权
    • Method and apparatus to control output power from a switching power supply
    • 控制来自开关电源的输出功率的方法和装置
    • US07554826B2
    • 2009-06-30
    • US11856573
    • 2007-09-17
    • Stephen W. Hawley
    • Stephen W. Hawley
    • H02M3/22
    • H02M1/32H02M3/156H02M3/33507
    • Techniques are disclosed to control output power from a switching power supply. A sample power converter controller circuit includes a control circuit coupled to be coupled to a switch. The control circuit includes a current sense circuit to be coupled to a primary winding of an energy transfer element coupled to the switch. The control circuit also includes a measurement circuit to be coupled to a secondary winding of the energy transfer element. A feedback circuit is also included and is coupled to the control circuit and coupled to receive a feedback-signal derived from an output of a power converter. The feedback circuit is coupled to output a signal to the measurement circuit. An output of the measurement circuit and an output of the current sense circuit are coupled to control a switching of the switch to regulate a combination of an output voltage and an output current of the power converter. A combination of the output voltage and the output current corresponds to at least one of a regulated output region and an unregulated output region. At least one of the unregulated output regions is a self protection auto-restart region. Within at least one unregulated output region the power converter controller circuit provides continuous output power at a substantially maximum output power of the power converter. Each output region corresponds to a magnitude and duration of the feedback signal.
    • 公开了用于控制来自开关电源的输出功率的技术。 一种示例功率转换器控制器电路包括耦合到耦合到开关的控制电路。 控制电路包括要耦合到耦合到开关的能量传递元件的初级绕组的电流感测电路。 控制电路还包括要耦合到能量传递元件的次级绕组的测量电路。 还包括反馈电路并且耦合到控制电路并被耦合以接收从功率转换器的输出导出的反馈信号。 反馈电路被耦合以向测量电路输出信号。 耦合测量电路的输出和电流检测电路的输出以控制开关的开关以调节功率转换器的输出电压和输出电流的组合。 输出电压和输出电流的组合对应于调节输出区域和未调节输出区域中的至少一个。 至少一个非稳压输出区域是自保护自动重启区域。 在至少一个未调节的输出区域内,功率转换器控制器电路以功率转换器的基本上最大的输出功率提供连续的输出功率。 每个输出区域对应于反馈信号的幅度和持续时间。
    • 4. 发明授权
    • Method and apparatus to control either a regulated or an unregulated output of a switching power supply
    • 用于控制开关电源的调节或不稳定输出的方法和装置
    • US07272025B2
    • 2007-09-18
    • US11038625
    • 2005-01-18
    • Stephen W. Hawley
    • Stephen W. Hawley
    • H02M1/00H02M3/335G05F1/00H02J7/00
    • H02M1/32H02M3/156H02M3/33507
    • Techniques are disclosed to control output power from a switching power supply. For example, a switching regulator according to aspects of the present invention includes a switch to be coupled to an energy transfer element of a power supply. A controller is coupled to the switch to control a switching of the switch to regulate an output voltage and an output current at an output of power supply output. A feedback circuit is coupled to the controller. The feedback circuit is coupled to receive a feedback signal from the output of the power supply. Combinations of the output voltage and the output current correspond to output regions. There is at least one regulated output region and one unregulated output region. At least one unregulated output region is a self protection auto-restart region. Within at least one unregulated output region, the switching regulator provides continuous output power at substantially the maximum output power of the switching regulator. Each output region corresponds to a magnitude and duration of the feedback signal.
    • 公开了用于控制来自开关电源的输出功率的技术。 例如,根据本发明的方面的开关调节器包括耦合到电源的能量传递元件的开关。 控制器耦合到开关以控制开关的开关以调节输出电压和输出电源输出端的输出电流。 反馈电路耦合到控制器。 反馈电路被耦合以从电源的输出接收反馈信号。 输出电压和输出电流的组合对应于输出区域。 至少有一个调节输出区域和一个不受调节的输出区域。 至少一个不受调节的输出区域是自保护自动重启区域。 在至少一个不受调节的输出区域内,开关稳压器基本上提供开关调节器的最大输出功率的连续输出功率。 每个输出区域对应于反馈信号的幅度和持续时间。
    • 5. 发明申请
    • EFFICIENCY REGULATION FOR LED ILLUMINATION
    • LED照明的效率调节
    • US20130154491A1
    • 2013-06-20
    • US13325707
    • 2011-12-14
    • Stephen W. Hawley
    • Stephen W. Hawley
    • H05B37/02
    • H05B33/0815H05B33/0824
    • Various embodiments of the present invention relate to a switch-mode regulator, and more particularly, to systems, devices and methods of using a switch-mode regulator to regulate an LED current to improve overall LED system efficacy and suppress power consumption of a dimmable LED illumination system. Both high and moderate brightness modes are implemented in an LED driver based on the switch-mode regulator. In the high brightness mode, the LED current is larger than a preferred LED current. In the moderate brightness mode, the LED current is smaller than the preferred LED current, and the LED driver sustains the preferred driver efficiency while the LED current remains as a direct current. Such a switch-mode power supply or regulator may also be used in applications other than the LED illumination system.
    • 本发明的各种实施例涉及开关模式调节器,更具体地,涉及使用开关模式调节器调节LED电流以提高整体LED系统功效并抑制可调光LED的功耗的系统,设备和方法 照明系统。 基于开关模式调节器的LED驱动器实现高亮度和中等亮度模式。 在高亮度模式下,LED电流大于优选的LED电流。 在中等亮度模式下,LED电流小于优选的LED电流,LED驱动器维持优选的驱动效率,同时LED电流保持为直流电流。 这种开关模式电源或调节器也可以用在除了LED照明系统之外的应用中。
    • 6. 发明申请
    • Bi-directional Boost-Buck Voltage Converter
    • 双向升压降压电压转换器
    • US20100045248A1
    • 2010-02-25
    • US12193968
    • 2008-08-19
    • Stephen W. Hawley
    • Stephen W. Hawley
    • G05F1/00
    • G03B15/03H02M3/1582
    • A bi-directional Boost-Buck voltage converter includes a controller, a high-voltage capacitor, a lower-voltage battery, a resistive load, an inductor, and three or four switches, and provides a mechanism to efficiently provide power to the resistive load from the battery. It uses two configurations of the switches to configure the battery, the inductor, and the capacitor in a boost converter configuration to charge the capacitor from the battery. It uses two different configurations of the switches to configure the capacitor, the inductor, and the resistive load in a buck converter configuration to discharge the capacitor through the inductor and the resistive load.
    • 双向升压降压电压转换器包括一个控制器,一个高压电容器,一个低压电池,一个电阻负载,一个电感器和三个或四个开关,并提供一种机制,有效地向电阻负载提供电力 从电池。 它使用两种配置的开关来配置升压转换器配置中的电池,电感和电容器,以便从电池充电电容器。 它使用两种不同的开关配置来配置降压转换器配置中的电容,电感和电阻负载,以便通过电感和电阻负载来放电电容。