公开(公告)号：US09207265B1

公开(公告)日：2015-12-08

申请号：US13942466

申请日：2013-07-15

Applicant: Cirrus Logic, Inc.

Inventor： Robert T. Grisamore ,  Firas S. Azrai ,  Mohit Sood ,  John L. Melanson ,  Eric J. King ,  Jean-Charles Pina

IPC: H05B37/02 ,  G01R19/00 ,  H05B33/08

CPC classification number: H05B33/0815 ,  G01R19/0046 ,  H05B33/0848 ,  H05B37/0218 ,  H05B37/0263 ,  Y02B20/346

Abstract: In at least one embodiment, a lighting system receives an input signal, such as a supply voltage, that can be affected by a dimmer. The supply voltage can be affected by a dimmer when, for example, a dimmer phase cut (i.e. chopped) the supply voltage. A dimmer detection system of the lighting system determines if a dimmer is affecting the supply voltage. In at least one embodiment, the dimmer detection system also determines a type of the dimmer, such as detecting if the dimmer is a leading edge or trailing edge dimmer. In at least one embodiment, the dimmer detection system provides dimmer type data to one or more other circuits such as a switching power converter controller. The one or more other circuits utilize the dimmer type data to affect their operation.

Abstract translation: 在至少一个实施例中，照明系统接收可以受到调光器影响的诸如电源电压的输入信号。 当例如电源电压的调光相切（即切断）时，电源电压可能受到调光器的影响。 照明系统的调光器检测系统确定调光器是否影响电源电压。 在至少一个实施例中，调光器检测系统还确定调光器的类型，例如检测调光器是前缘还是后缘调光器。 在至少一个实施例中，调光器检测系统向诸如开关功率转换器控制器的一个或多个其它电路提供调光器类型的数据。 一个或多个其他电路利用调光器类型的数据来影响其操作。