公开(公告)号：US09024541B2

公开(公告)日：2015-05-05

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: H05B37/02 ,  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：US20140252990A1

公开(公告)日：2014-09-11

申请号：US14203792

申请日：2014-03-11

Applicant: CIRRUS LOGIC, INC.

Inventor： Siddharth Maru ,  Zhaohui He

IPC: H02M3/335 ,  H05B33/08

CPC classification number: H02M3/33507 ,  H02M1/4258 ,  H02M3/156 ,  H05B33/0815 ,  H05B33/0848 ,  Y02B20/347 ,  Y02B70/126

Abstract: An electronic system and method includes a controller to control a switching power converter in at least two different modes of operation, a normal mode and an error reduction mode. The controller controls an amount of charge pushed (i.e. delivered) by the switching power converter to a load to reduce a charge quantization error. The charge quantization error represents an amount of charge pushed to the load beyond a target charge amount. The controller determines an amount of charge to be pushed to the toad. Based on the amount of charge to be pushed to the load, the controller generates a current control signal that controls a current control switch in the switching power converter. Determination of the control signal depends on whether the controller is operating in normal mode or error reduction mode. The controller attempts to reduce the charge quantization error to avoid power fluctuations.

Abstract translation: 一种电子系统和方法包括：控制器，其以至少两种不同的操作模式，正常模式和误差降低模式来控制开关功率转换器。 控制器控制由开关功率转换器推送（即传送）到负载的电荷量，以减少电荷量化误差。 电荷量化误差表示被推到负载超过目标电荷量的电荷量。 控制器确定要向蟾蜍推送的费用。 基于将被推送到负载的电荷量，控制器产生控制开关电力转换器中的电流控制开关的电流控制信号。 控制信号的确定取决于控制器是在正常模式还是误差降低模式下运行。 控制器尝试降低电荷量化误差以避免功率波动。

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：US20130154495A1

公开(公告)日：2013-06-20

申请号：US13715584

申请日：2012-12-14

Applicant: Cirrus Logic, Inc.

Inventor： Zhaohui He

IPC: H02M7/217 ,  H05B37/02

CPC classification number: H02M3/33507 ,  H02M1/4258 ,  H02M1/44 ,  H02M3/33523 ,  H02M3/33561 ,  H02M3/33576 ,  H02M5/2576 ,  H02M7/217 ,  H02M2001/0006 ,  H02M2001/0048 ,  H05B33/0815 ,  H05B33/0845 ,  H05B37/02 ,  Y02B20/346 ,  Y02B20/347 ,  Y02B70/126 ,  Y02B70/1491

Abstract: In at least one embodiment, an electronic system adapts current control timing for half line cycle of a phase-cut input voltage and responsively controls a dimmer current in a power converter system. The adaptive current control time and responsive current control provides, for example, interfacing with a dimmer. The electronic system and method include a dimmer, a switching power converter, and a controller to control the switching power converter and controls a dimmer current. In at least one embodiment, the controller determines a predicted time period from a zero crossing until a leading edge of a phase-cut input voltage and then responsively controls the dimmer current to, for example, reduce current and voltage perturbations (referred to as “ringing”), improve efficiency, and reduce an average amount of power handled by various circuit components.

Abstract translation: 在至少一个实施例中，电子系统适应相切切输入电压的半线周期的电流控制定时，并且响应于控制功率转换器系统中的调光器电流。 自适应电流控制时间和响应电流控制提供例如与调光器的接口。 电子系统和方法包括调光器，开关电源转换器和控制器以控制开关功率转换器并控制调光器电流。 在至少一个实施例中，控制器确定从零交叉直到相切输入电压的前沿的预测时间段，然后响应地控制调光器电流，例如减小电流和电压扰动（称为“ 振铃“），提高效率，并减少各种电路组件处理的平均功率。