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1. 发明申请

US20150312978A1 MULTI-BLEEDER MODE CONTROL FOR IMPROVED LED DRIVER PERFORMANCE 有权
标题翻译：用于改进LED驱动器性能的多BEREDER模式控制
公开(公告)号：US20150312978A1
公开(公告)日：2015-10-29
申请号：US14261271
申请日：2014-04-24
申请人： Power Integrations, Inc.
发明人： Peter VAUGHAN , Ricardo L. J. PREGITZER
IPC分类号： H05B33/08
CPC分类号： H05B33/089 , H05B33/0815 , H05B33/0845 , H05B37/02
摘要： Various examples directed to phase-dimming LED driver input circuitry having multiple bleeder circuits activated by a controller with multi-bleeder mode control are disclosed. In one example, the input circuitry may include multiple bleeder circuits controlled by the controller in an open-loop or closed-loop configuration. The controller may selectively activate or deactivate the multiple bleeder circuits based on the input line voltage, the dimming state, and the type of dimming being implemented to improve performance of the LED driver by preventing or reducing shimmering/blinking and by reducing bleeder loss.
摘要翻译：公开了涉及具有多个泄放电路的相位调光LED驱动器输入电路的各种示例，该多个泄放电路由具有多次放电模式控制的控制器激活。在一个示例中，输入电路可以包括以开环或闭环配置由控制器控制的多个泄放电路。控制器可以基于输入线路电压，调光状态和调光类型来选择性地启动或停用多个泄放电路，以通过防止或减少闪烁/闪烁并减少泄放损失来提高LED驱动器的性能。

2. 发明申请

US20160135264A1 ENABLE CIRCUIT FOR LIGHTING DRIVERS 有权
标题翻译：照明驱动器使用电路
公开(公告)号：US20160135264A1
公开(公告)日：2016-05-12
申请号：US14536484
申请日：2014-11-07
申请人： Power Integrations, Inc.
发明人： Peter VAUGHAN
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , H05B33/0815
摘要： This relates to an enable driver circuit for an LED drive. In some examples, the enable driver circuit may sense an input of the LED driver and enable the LED driver when a conduction angle of the input is greater than a threshold value after a set amount of line cycles of the input of the LED driver have occurred. If the conduction angle is not greater than the threshold after the set amount of line cycles, the enable driver circuit may not enable the LED driver and power may not be delivered to the LED load. In some examples, the enable driver circuit may further enable the LED driver if the conduction angle of the input increases by a certain amount and the resultant conduction angle is greater than the threshold, regardless of the number of line cycles of the ac input voltage that have occurred.
摘要翻译：这涉及用于LED驱动器的使能驱动器电路。在一些示例中，使能驱动器电路可以感测LED驱动器的输入，并且在LED驱动器的输入的设定量的线路周期已经发生之后，当输入的导通角大于阈值时使能LED驱动器。如果在设定的行周期之后导通角不大于阈值，则使能驱动器电路可能不使能LED驱动器，并且电源可能不会传送到LED负载。在一些示例中，如果输入的导通角增加一定量并且导致的导通角大于阈值，则使能驱动器电路可以进一步启用LED驱动器，而不管ac输入电压的线路周期数如何已经发生

3. 发明申请

US20160095174A1 LED DRIVER CIRCUIT WITH OPEN LOAD DETECTION 有权
标题翻译：具有开路负载检测功能的LED驱动电路
公开(公告)号：US20160095174A1
公开(公告)日：2016-03-31
申请号：US14500841
申请日：2014-09-29
申请人： Power Integrations, Inc.
发明人： Peter VAUGHAN , Ricardo L. J. PREGITZER
IPC分类号： H05B33/08
CPC分类号： H05B33/089 , H05B33/0815 , H05B33/0845 , H05B33/0887 , H05B37/02
摘要： Various examples directed to LED driver circuits capable of detecting the removal of an LED load are disclosed. In one example, the LED driver circuit may include a bleeder and load disconnect detection circuit having a bleeder circuit and a bleeder controller coupled to control the bleeder circuit. The bleeder controller may cause the bleeder circuit to draw a bleeder current that functions to supplement a load current drawn by an LED load to cause an input current of the LED driver circuit to be greater than a minimum holding current of a dimmer circuit. The bleeder controller may be further configured to detect a disconnect of the LED load based on the input current of the LED driver circuit, the bleeder control signal, and/or the bleeder current. In response to detecting a disconnect of the LED load, the bleeder controller may disable operation of the bleeder circuit.
摘要翻译：公开了针对能够检测LED负载的去除的LED驱动电路的各种示例。在一个示例中，LED驱动器电路可以包括泄放器和负载断开检测电路，其具有泄放电路和耦合以控制泄放电路的泄放控制器。泄放控制器可以使泄放电路抽出泄放电流，其功能用于补充由LED负载引起的负载电流，以使LED驱动电路的输入电流大于调光电路的最小保持电流。泄放控制器还可以被配置为基于LED驱动电路的输入电流，泄放控制信号和/或泄放电流来检测LED负载的断开。响应于检测到LED负载的断开，泄放控制器可以禁止泄放电路的操作。

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