公开(公告)号：US09197122B2

公开(公告)日：2015-11-24

申请号：US14399206

申请日：2013-05-08

Applicant: OSRAM GmbH

Inventor： Xusheng Yang ,  Shaoping Chen ,  Xiongqiang He ,  Qingfu Zhang

IPC: H02M1/14 ,  H05B33/08

CPC classification number: H02M1/14 ,  H05B33/0806 ,  H05B33/0812 ,  H05B33/0851 ,  Y02B20/343 ,  Y02B20/345 ,  Y10T307/406

Abstract: A load drive circuit may include a DC power source configured to provide a DC output voltage for at least one load based on an output voltage of an AC/DC converter, the DC output voltage having a ripple, a variable resistance module connected to the load, a ripple reduction module that generates, based on a reference voltage and a feedback signal from the load, a variable resistance adjusting signal for adjusting the resistance of the variable resistance module so as to reduce a ripple of the load current, wherein the reference voltage is generated based on the DC output voltage, and a reference voltage adjusting module that adjusts the average value of the reference voltage based on the variable resistance adjusting signal, so as to make the average value of the reference voltage approach the average value of the feedback signal as much as possible.

Abstract translation: 负载驱动电路可以包括DC电源，其被配置为基于AC / DC转换器的输出电压为至少一个负载提供DC输出电压，DC输出电压具有纹波，连接到负载的可变电阻模块 ，纹波减小模块，其基于来自所述负载的参考电压和反馈信号生成用于调整所述可变电阻模块的电阻的可变电阻调整信号，以减小所述负载电流的纹波，其中所述参考电压 基于直流输出电压生成基准电压调整模块，基准电压调整信号调整基准电压的平均值，使基准电压的平均值接近反馈的平均值 信号尽可能多。

公开(公告)号：US20150123568A1

公开(公告)日：2015-05-07

申请号：US14399206

申请日：2013-05-08

Applicant: OSRAM GmbH

Inventor： Xusheng Yang ,  Shaoping Chen ,  Xiongqiang He ,  Qingfu Zhang

IPC: H02M1/14 ,  H05B33/08

CPC classification number: H02M1/14 ,  H05B33/0806 ,  H05B33/0812 ,  H05B33/0851 ,  Y02B20/343 ,  Y02B20/345 ,  Y10T307/406

Abstract: A load drive circuit may include a DC power source configured to provide a DC output voltage for at least one load based on an output voltage of an AC/DC converter, the DC output voltage having a ripple, a variable resistance module connected to the load, a ripple reduction module that generates, based on a reference voltage and a feedback signal from the load, a variable resistance adjusting signal for adjusting the resistance of the variable resistance module so as to reduce a ripple of the load current, wherein the reference voltage is generated based on the DC output voltage, and a reference voltage adjusting module that adjusts the average value of the reference voltage based on the variable resistance adjusting signal, so as to make the average value of the reference voltage approach the average value of the feedback signal as much as possible.

Abstract translation: 负载驱动电路可以包括DC电源，其被配置为基于AC / DC转换器的输出电压为至少一个负载提供DC输出电压，DC输出电压具有纹波，连接到负载的可变电阻模块 ，纹波减小模块，其基于来自所述负载的参考电压和反馈信号生成用于调整所述可变电阻模块的电阻的可变电阻调整信号，以减小所述负载电流的纹波，其中所述参考电压 基于直流输出电压生成基准电压调整模块，基准电压调整信号调整基准电压的平均值，使基准电压的平均值接近反馈的平均值 信号尽可能多。