公开(公告)号：US20160374162A1

公开(公告)日：2016-12-22

申请号：US15178850

申请日：2016-06-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Katsuyoshi NAKADA ,  Keisuke UEDA ,  Kenichi FUKUDA

IPC: H05B33/08 ,  H02M7/06 ,  H02M1/36 ,  H05B37/02

CPC classification number: H05B33/0815 ,  H02M3/156 ,  H05B33/0818 ,  H05B33/0845 ,  H05B37/0281

Abstract: A lighting device which outputs a DC current to a load, the lighting device including: a downconverter circuit which includes a switching element and steps down a DC voltage input to the downconverter circuit; and a controller which controls turning on and off of the switching element, wherein the controller has operating modes including a detection mode in which the controller detects a time taken for a current through the switching element to reach a predetermined value after the switching element turns on, the current through the switching element representing the DC current output to the load.

Abstract translation: 一种向负载输出直流电流的照明装置，所述照明装置包括：下变频器电路，其包括开关元件并降压输入到所述下变频器电路的直流电压; 以及控制器，其控制所述开关元件的接通和断开，其中所述控制器具有包括检测模式的操作模式，其中所述控制器在所述开关元件接通之后检测到通过所述开关元件的电流达到预定值所花费的时间 ，通过开关元件的电流代表输出到负载的直流电流。

公开(公告)号：US20150282263A1

公开(公告)日：2015-10-01

申请号：US14612350

申请日：2015-02-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keisuke UEDA ,  Nobuo UKITA

IPC: H05B33/08 ,  G01R19/165

CPC classification number: H05B33/089 ,  G09G2330/12 ,  H05B33/0815 ,  H05B33/0893 ,  Y02B20/346

Abstract: A no-load detection circuit includes an inductance device, an impedance device and a switch circuit. The inductance device is interposed between a choke coil and a first output terminal, which is at a high potential side, so as to be magnetically coupled to the choke coil. The impedance device is connected in series with the inductance device between the inductance device and the first output terminal. The switch circuit is configured to be turned on when a value of electric potential at the first output terminal exceeds a predetermined reference value. The control circuit is configured to stop the switching control if the switch circuit is turned on.

Abstract translation: 空载检测电路包括电感器件，阻抗器件和开关电路。 电感器件介于扼流圈和位于高电位侧的第一输出端之间，以便与扼流线圈磁耦合。 阻抗器件与电感器件和第一输出端子之间的电感器件串联连接。 开关电路被配置为当第一输出端子处的电位值超过预定参考值时导通。 控制电路被配置为如果开关电路被接通则停止开关控制。