公开(公告)号：US08912734B2

公开(公告)日：2014-12-16

申请号：US13673879

申请日：2012-11-09

Applicant: Cirrus Logic, Inc.

Inventor： John L. Melanson ,  Alfredo R. Linz ,  Michael A. Kost ,  Sahil Singh

IPC: G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B33/08

CPC classification number: H05B33/0863 ,  H05B33/0815 ,  H05B33/0866 ,  H05B33/0872

Abstract: A lighting system includes methods and systems to mix colors of light emitted from at least two LED emitters. In at least one embodiment, the lighting system includes a controller that responds to phase-cut angles of the dimming signal and correlates the phase-cut angles with a predetermined black body radiation function to dynamically adjust a color spectra of the mixed light in response to changes in phase cut angles of the phase-cut dimming level signal. In at least one embodiment, the controller utilizes the predetermined black body radiation function to dynamically adjust the color spectra of the mixed, emitted light in response to changes in phase cut angles of a phase-cut dimming level signal. In at least one embodiment, the predetermined black body radiation function specifies correlated color temperatures (CCTs) that model the CCTs of an actual non-LED based lamp, such as an incandescent lamp.

Abstract translation: 照明系统包括混合从至少两个LED发射器发射的光的颜色的方法和系统。 在至少一个实施例中，照明系统包括控制器，其对调光信号的相位角进行响应，并将相切角与预定的黑体辐射功能相关联，以响应于 切相调光电平信号的相位角变化。 在至少一个实施例中，控制器利用预定的黑体辐射功能来响应于相位切割调光电平信号的相位切换角度的变化来动态地调节混合的发射光的色谱。 在至少一个实施例中，预定黑体辐射功能规定了对诸如白炽灯的实际非LED基灯的CCT进行建模的相关色温（CCT）。

公开(公告)号：US20140252981A1

公开(公告)日：2014-09-11

申请号：US14201050

申请日：2014-03-07

Applicant: Cirrus Logic, Inc.

Inventor： Yanhui Xie ,  Michael A. Kost ,  John L. Melanson ,  Zhaohui He ,  Chris M. Franklin

IPC: H02M3/335 ,  H05B33/08

CPC classification number: H02M3/33507 ,  H05B33/08 ,  H05B33/0815 ,  Y02B20/346

Abstract: A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the switching power converter utilizes a transformer to transfer energy from a primary-side of the transformer to a secondary-side of the transformer. In at least one embodiment, the switching power converter control parameters includes a secondary-side conduction time delay that represents a time delay between when the primary-side ceases conducting a primary-side current and the secondary-side begins to conduct a secondary-side current. In at least one embodiment, determining and accounting for this secondary-side conduction time delay increases the prediction accuracy of the secondary-side current value and accurate delivery of energy to a load when the controller does not directly sense the secondary-side current provided to the load.

Abstract translation: 配电系统包括开关电源转换器的控制器，以控制开关功率转换器并确定一个或多个开关功率转换器控制参数。 在至少一个实施例中，开关功率转换器利用变压器将能量从变压器的初级侧传递到变压器的次级侧。 在至少一个实施例中，开关功率转换器控制参数包括次级侧导通时间延迟，其表示在初级侧停止进行初级侧电流和次级侧之间的时间延迟开始进行二次侧 当前。 在至少一个实施例中，确定和计算该次级侧导通时间延迟增加了次级侧电流值的预测精度，并且当控制器不直接感测提供给 负载。

公开(公告)号：US09277624B1

公开(公告)日：2016-03-01

申请号：US13889952

申请日：2013-05-08

Applicant: Cirrus Logic, Inc.

Inventor： Wesley L. Mokry ,  Michael A. Kost ,  Eric J. King

IPC: H05B37/00 ,  H05B37/02

CPC classification number: H05B37/02 ,  H02M1/36 ,  H02M7/217 ,  H02M2001/0045 ,  H05B33/0812 ,  Y02B20/343

Abstract: In accordance with embodiments of the present disclosure, a system and method for providing compatibility between a load having a reactive impedance during steady-state operation and a secondary winding of an electronic transformer driven by a leading-edge dimmer may include a first circuit and a second circuit. The first circuit may cause the load to have a substantially non-reactive impedance when the first circuit is enabled. The second circuit may enable the first circuit to cause the load to have the substantially non-reactive impedance during a duration of time following start-up of the electronic transformer and disable the first circuit after the duration such that the load has the reactive impedance during steady-state operation of the load.

公开(公告)号：US09215765B1

公开(公告)日：2015-12-15

申请号：US13889926

申请日：2013-05-08

Applicant: Cirrus Logic, Inc.

Inventor： Wesley L. Mokry ,  Michael A. Kost ,  Eric Jerome King

IPC: H05B37/00 ,  H05B39/00 ,  H05B33/08 ,  H02M7/217

CPC classification number: H05B37/02 ,  H02M1/36 ,  H02M7/217 ,  H02M2001/0045 ,  H05B33/0812 ,  Y02B20/343

Abstract: In accordance with embodiments of the present disclosure, a system and method for providing compatibility between a load having a reactive impedance during steady-state operation and a secondary winding of an electronic transformer driven by a leading-edge dimmer may include a first circuit and a second circuit. The first circuit may cause the load to have a substantially non-reactive impedance when the first circuit is enabled. The second circuit may enable the first circuit to cause the load to have the substantially non-reactive impedance during a duration of time following start-up of the electronic transformer and disable the first circuit after the duration such that the load has the reactive impedance during steady-state operation of the load.

Abstract translation: 根据本公开的实施例，用于在稳态操作期间具有无功阻抗的负载和由前沿调光器驱动的电子变压器的次级绕组之间提供兼容性的系统和方法可以包括第一电路和 第二电路。 当第一电路被使能时，第一电路可能导致负载具有基本上无电阻的阻抗。 第二电路可以使得第一电路使得负载在电子变压器起动之后的持续时间内具有基本上无功的阻抗，并且在持续时间之后禁用第一电路，使得负载在 负载的稳态运行。

公开(公告)号：US20150061536A1

公开(公告)日：2015-03-05

申请号：US14266003

申请日：2014-04-30

Applicant: Cirrus Logic, Inc.

Inventor： Yanhui Xie ,  Sahil Singh ,  Michael A. Kost

IPC: H05B33/08 ,  H02M3/335

CPC classification number: H05B33/0845 ,  H02M1/425 ,  H05B33/0815 ,  Y02B70/126

Abstract: In accordance with embodiments of the present disclosure, an apparatus may comprise a controller to provide compatibility between a load and a secondary winding of an electronic transformer. The controller may be configured to operate a single-stage power converter in a first power mode for a first period of time, such that the single-stage power converter is enabled to transfer energy from the secondary winding to the load during the first power mode and operate the single-stage power converter in a second power mode for a second period of time prior to the first period of time, such that the single-stage power converter is enabled to transfer energy from the secondary winding to the load during the second power mode, wherein the first power mode and the second power mode occur within a half-line cycle of an electronic transformer secondary signal present on the secondary winding.

Abstract translation: 根据本公开的实施例，装置可以包括控制器，以提供电子变压器的负载和次级绕组之间的兼容性。 控制器可以被配置为在第一时间段内以第一功率模式操作单级功率转换器，使得单级功率转换器能够在第一功率模式期间将能量从次级绕组传递到负载 以及在所述第一时间段之前的第二时间段内以第二功率模式操作所述单级功率转换器，使得所述单级功率转换器能够在第二时间段期间将能量从所述次级绕组传递到所述负载 功率模式，其中第一功率模式和第二功率模式发生在次级绕组上存在的电子变压器次级信号的半线周期内。

公开(公告)号：US20130069561A1

公开(公告)日：2013-03-21

申请号：US13673879

申请日：2012-11-09

Applicant: CIRRUS LOGIC, INC.

Inventor： John L. Melanson ,  Alfredo R. Linz ,  Michael A. Kost ,  Sahil Singh

IPC: H05B37/02

CPC classification number: H05B33/0863 ,  H05B33/0815 ,  H05B33/0866 ,  H05B33/0872

Abstract: A lighting system includes methods and systems to mix colors of light emitted from at least two LED emitters. In at least one embodiment, the lighting system includes a controller that responds to phase-cut angles of the dimming signal and correlates the phase-cut angles with a predetermined black body radiation function to dynamically adjust a color spectra of the mixed light in response to changes in phase cut angles of the phase-cut dimming level signal. In at least one embodiment, the controller utilizes the predetermined black body radiation function to dynamically adjust the color spectra of the mixed, emitted light in response to changes in phase cut angles of a phase-cut dimming level signal. In at least one embodiment, the predetermined black body radiation function specifies correlated color temperatures (CCTs) that model the CCTs of an actual non-LED based lamp, such as an incandescent lamp.

Abstract translation: 照明系统包括混合从至少两个LED发射器发射的光的颜色的方法和系统。 在至少一个实施例中，照明系统包括控制器，其对调光信号的相位角进行响应，并将相切角与预定的黑体辐射功能相关联，以响应于 切相调光电平信号的相位角变化。 在至少一个实施例中，控制器利用预定的黑体辐射功能来响应于相位切割调光电平信号的相位切换角度的变化来动态地调整混合的发射光的色谱。 在至少一个实施例中，预定黑体辐射功能规定了对诸如白炽灯的实际非LED基灯的CCT进行建模的相关色温（CCT）。