公开(公告)号：US09660436B2

公开(公告)日：2017-05-23

申请号：US14377504

申请日：2013-07-01

Applicant: OSRAM SYLVANIA Inc.

Inventor： Christian Breuer ,  Keng Chen

IPC: H02H3/20 ,  G01R21/00 ,  H05B41/285 ,  G01R31/28 ,  H05B37/02 ,  G01R31/40

CPC classification number: H02H3/20 ,  G01R21/00 ,  G01R31/2853 ,  G01R31/40 ,  H05B37/0209 ,  H05B41/2851 ,  Y10T307/438

Abstract: Systems and methods for detection of interconnected outputs of a power supply are provided. A first channel of a power supply is activated, such that power is supplied to a first load connected to the first channel. A first load voltage is measured for the first load. A second load voltage is measured for a second load connected to a second channel of the power supply. The second load voltage is compared to the first load voltage to generate an interconnection result. The power supply is shut down when the interconnection result indicates that the second load voltage matches the first load voltage, such that all channels of the power supply do not supply power to any load connected thereto.

公开(公告)号：US10327295B2

公开(公告)日：2019-06-18

申请号：US16061338

申请日：2016-12-12

Applicant: OSRAM SYLVANIA Inc.

Inventor： Andrew Johnsen ,  Keng Chen ,  Ming Li ,  Peng Xiao

IPC: H05B37/00 ,  H05B33/08

Abstract: A multi string controller with independent current setting for each string is designed for solid state lighting applications. This controller can regulate multiple channels of LEDs. Each string may have a different forward voltage and current setting. A constant buck regulator is also integrated inside this controller to regulate the total current, which is fed into the LED output channels. The circuit also contains a feedback loop in order to precisely control the current passing through each string and is immune to transient conditions.

公开(公告)号：US20190045595A1

公开(公告)日：2019-02-07

申请号：US16061338

申请日：2016-12-12

Applicant: OSRAM SYLVANIA INC.

Inventor： Andrew Johnsen ,  Keng Chen ,  Ming Li ,  Peng Xiao

IPC: H05B33/08

Abstract: A multi string controller with independent current setting for each string is designed for solid state lighting applications. This controller can regulate multiple channels of LEDs. Each string may have a different forward voltage and current setting. A constant buck regulator is also integrated inside this controller to regulate the total current, which is fed into the LED output channels. The circuit also contains a feedback loop in order to precisely control the current passing through each string and is immune to transient conditions.

公开(公告)号：US20150180220A1

公开(公告)日：2015-06-25

申请号：US14377504

申请日：2013-07-01

Applicant: OSRAM SYLVANIA INC.

Inventor： Christian Breuer ,  Keng Chen

IPC: H02H3/20 ,  H05B37/02 ,  G01R31/28 ,  G01R21/00

CPC classification number: H02H3/20 ,  G01R21/00 ,  G01R31/2853 ,  G01R31/40 ,  H05B37/0209 ,  H05B41/2851 ,  Y10T307/438

Abstract: Systems and methods for detection of interconnected outputs of a power supply are provided. A first channel of a power supply is activated, such that power is supplied to a first load connected to the first channel. A first load voltage is measured for the first load. A second load voltage is measured for a second load connected to a second channel of the power supply. The second load voltage is compared to the first load voltage to generate an interconnection result. The power supply is shut down when the interconnection result indicates that the second load voltage matches the first load voltage, such that all channels of the power supply do not supply power to any load connected thereto.

Abstract translation: 提供了用于检测电源的互连输出的系统和方法。 激活电源的第一通道，使得电力被提供给连接到第一通道的第一负载。 测量第一个负载的第一个负载电压。 测量连接到电源的第二通道的第二负载的第二负载电压。 将第二负载电压与第一负载电压进行比较以产生互连结果。 当互连结果指示第二负载电压与第一负载电压相匹配时，电源关闭，使得电源的所有通道不向与其连接的任何负载供电。

公开(公告)号：US09743483B2

公开(公告)日：2017-08-22

申请号：US15093917

申请日：2016-04-08

Applicant: OSRAM SYLVANIA Inc.

Inventor： Ming Li ,  Qi Dai ,  Keng Chen

IPC: G01J1/02 ,  G01J1/16 ,  H05B33/08 ,  G01J1/58

CPC classification number: H05B33/0869 ,  G01J1/0228 ,  G01J1/0238 ,  G01J1/16 ,  G01J1/58 ,  G01J2001/1673

Abstract: Techniques are disclosed for maintaining consistent lumen output of a lighting assembly over time. By maintaining a consistent lumen output, it is possible to maintain acceptable color stability where color mixing of multiple outputs is used. The lighting assembly may be any lighting configuration that might suffer from lumen depreciation and/or color drift over time, and may include any type(s) of light source(s) that may be monitored and driven accordingly. The lighting assembly, in addition to light source(s), includes a photo detector and a directed light source, such as a laser. The directed light source provides a golden sample for use in calibrating the photo detector, which in turn monitors lumen output of the light source(s). Drive signals are adjusted to account for lumen depreciation of the monitored light source(s).