公开(公告)号：US09215770B2

公开(公告)日：2015-12-15

申请号：US14039355

申请日：2013-09-27

Applicant: Cirrus Logic, Inc.

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

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0818 ,  H05B33/0815

Abstract: A controller may be configured to: (i) predict based on an electronic transformer secondary signal an estimated occurrence of a high-resistance state of a trailing-edge dimmer coupled to a primary winding of an electronic transformer, wherein the high-resistance state occurs when the trailing-edge dimmer begins phase-cutting an alternating current voltage signal; (ii) operate a power converter in a trailing-edge exposure mode for a first period of time immediately prior to the estimated occurrence of the high-resistance state, such that the power converter is enabled to transfer energy from the secondary winding to the load during the trailing-edge exposure mode; and (iii) operate the power converter in a power mode for a second period of time prior to and non-contiguous with the first period of time, such that the power converter is enabled to transfer energy from the secondary winding to the load during the power mode.

Abstract translation: 控制器可以被配置为：（i）基于电子变压器次级信号预测耦合到电子变压器的初级绕组的后缘调光器的高电阻状态的估计出现，其中发生高电阻状态 当后缘调光器开始切割交流电压信号时; （ii）在估计出现高电阻状态之前的第一时间段内以后沿曝光模式操作功率转换器，使得功率转换器能够将能量从次级绕组传递到负载 在后缘曝光模式期间; 以及（iii）在第一时间段之前和不连续的第二时间段内以功率模式操作功率转换器，使得功率转换器能够在第一时间段期间将能量从次级绕组传递到负载 电源模式。

公开(公告)号：US09214862B2

公开(公告)日：2015-12-15

申请号：US14495564

申请日：2014-09-24

Applicant: Cirrus Logic, Inc.

Inventor： Poornima Mazumdar ,  Mohit Sood ,  Rahul Singh ,  Sahil Singh

IPC: H02M3/156 ,  H02M1/00

CPC classification number: H02M3/156 ,  H02M3/33507 ,  H02M2001/0054 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A controller may be configured to generate a control signal to activate and deactivate a switch of a switching power converter in order to control a switching period and a peak current of the switching power converter to maintain a regulated current of the switching power converter at a desired current level such that: if the switching period decreases below a minimum switching period, the controller increases the switching period by a ringing period of a voltage of the switch and increases the peak current to compensate for the increase of the switching period in order to maintain the regulated current, and if the peak current increases above a maximum peak current, the controller decreases the switching period by a ringing period of the voltage of the switch and decreases the peak current to compensate for the decrease of the switching period in order to maintain the regulated current.

Abstract translation: 控制器可以被配置为产生控制信号以激活和停用开关功率转换器的开关，以便控制开关功率转换器的开关周期和峰值电流，以将开关功率转换器的调节电流保持在期望的 电流电平使得：如果开关周期降低到最小开关周期以下，则控制器将开关周期增加开关电压的振铃周期，并增加峰值电流以补偿开关周期的增加以便维持 调节电流，并且如果峰值电流增加到最大峰值电流以上，则控制器将开关周期减小开关的电压的振铃周期，并降低峰值电流以补偿开关周期的减小以便维持 调节电流。

公开(公告)号：US20150303796A1

公开(公告)日：2015-10-22

申请号：US14495564

申请日：2014-09-24

Applicant: Cirrus Logic, Inc.

Inventor： Poornima Mazumdar ,  Mohit Sood ,  Rahul Singh ,  Sahil Singh

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H02M3/33507 ,  H02M2001/0054 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A controller may be configured to generate a control signal to activate and deactivate a switch of a switching power converter in order to control a switching period and a peak current of the switching power converter to maintain a regulated current of the switching power converter at a desired current level such that: if the switching period decreases below a minimum switching period, the controller increases the switching period by a ringing period of a voltage of the switch and increases the peak current to compensate for the increase of the switching period in order to maintain the regulated current, and if the peak current increases above a maximum peak current, the controller decreases the switching period by a ringing period of the voltage of the switch and decreases the peak current to compensate for the decrease of the switching period in order to maintain the regulated current.

Abstract translation: 控制器可以被配置为产生控制信号以激活和停用开关功率转换器的开关，以便控制开关功率转换器的开关周期和峰值电流，以将开关功率转换器的调节电流保持在期望的 电流电平使得：如果开关周期降低到最小开关周期以下，则控制器将开关周期增加开关电压的振铃周期，并增加峰值电流以补偿开关周期的增加以便维持 调节电流，并且如果峰值电流增加到最大峰值电流以上，则控制器将开关周期减小开关的电压的振铃周期，并降低峰值电流以补偿开关周期的减小以便维持 调节电流。

公开(公告)号：US20140028214A1

公开(公告)日：2014-01-30

申请号：US14039355

申请日：2013-09-27

Applicant: Cirrus Logic, Inc.

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

IPC: H05B33/08

CPC classification number: H05B33/0818 ,  H05B33/0815

Abstract: A controller may be configured to: (i) predict based on an electronic transformer secondary signal an estimated occurrence of a high-resistance state of a trailing-edge dimmer coupled to a primary winding of an electronic transformer, wherein the high-resistance state occurs when the trailing-edge dimmer begins phase-cutting an alternating current voltage signal; (ii) operate a power converter in a trailing-edge exposure mode for a first period of time immediately prior to the estimated occurrence of the high-resistance state, such that the power converter is enabled to transfer energy from the secondary winding to the load during the trailing-edge exposure mode; and (iii) operate the power converter in a power mode for a second period of time prior to and non-contiguous with the first period of time, such that the power converter is enabled to transfer energy from the secondary winding to the load during the power mode.

Abstract translation: 控制器可以被配置为：（i）基于电子变压器次级信号预测耦合到电子变压器的初级绕组的后缘调光器的高电阻状态的估计出现，其中发生高电阻状态 当后缘调光器开始切割交流电压信号时; （ii）在估计出现高电阻状态之前的第一时间段内以后沿曝光模式操作功率转换器，使得功率转换器能够将能量从次级绕组传递到负载 在后缘曝光模式期间; 以及（iii）在第一时间段之前和不连续的第二时间段内以功率模式操作功率转换器，使得功率转换器能够在第一时间段期间将能量从次级绕组传递到负载 电源模式。