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1. 发明申请

WO2013053522A1 LED CONTROL CIRCUIT, LED ILLUMINATING DEVICE AND SHORT CIRCUIT PROTECTION METHOD 审中-公开
标题翻译： LED控制电路，LED照明装置和短路保护方法
公开(公告)号：WO2013053522A1
公开(公告)日：2013-04-18
申请号：PCT/EP2012/066432
申请日：2012-08-23
申请人： OSRAM GMBH , BORDIN, Luca , CHEN, Yuli , LIAO, Wuqiang , TAN, Wei
发明人： BORDIN, Luca , CHEN, Yuli , LIAO, Wuqiang , TAN, Wei
IPC分类号： H05B33/08
CPC分类号： H05B33/0818 , H05B33/083 , H05B33/0857 , H05B33/0887 , Y02B20/341
摘要： The present invention relates to An LED control circuit, comprising an LED driver (1), a microcontroller (2) and a plurality of serially connected load groups (LED string_1, LED string_N), the LED driver (1) supplies a driving current to a plurality of serially connected load groups (LED string_1,.... LED string_ N); and the microcontroller (2) send respective pulse width modulation signals (PWM_1, PWM_N) to control the switches (S1, SN) via control lines (L1, LN); and the plurality of switches (S1, SN) each connected in parallel with respective load group, characterized by further comprising a short protection circuit that collects the pulse width modulation signals (PWM_1,..., PWM_N) from respective control lines, and outputs a signal to an interface (3) of the LED driver to turn off the LED driver (1) so as to stop outputting the driving current, if all of the pulse width modulation signals are in high level.
摘要翻译：本发明涉及一种LED控制电路，包括LED驱动器（1），微控制器（2）和多个串联连接的负载组（LED串-1，LED串-N），LED驱动器（1）将驱动电流提供给多个串联连接的负载组（LED string_1，... LED string_ N）; 微控制器（2）通过控制线（L1，LN）发送相应的脉冲宽度调制信号（PWM_1，PWM_N）来控制开关（S1，SN）; 和与各个负载组并联连接的多个开关（S1，SN），其特征在于，还包括从各控制线收集脉宽调制信号（PWM_1，...，PWM_N）的短路保护电路，输出如果所有的脉冲宽度调制信号都处于高电平，则向LED驱动器的接口（3）发送信号以关闭LED驱动器（1）以停止输出驱动电流。

2. 发明申请

WO2014090640A1 CURRENT COMPENSATION DEVICE AND LIGHTING APPARATUS WITH THE SAME 审中-公开
标题翻译：电流补偿装置及其照明装置
公开(公告)号：WO2014090640A1
公开(公告)日：2014-06-19
申请号：PCT/EP2013/075420
申请日：2013-12-03
申请人： OSRAM GMBH
发明人： HE, Xiongqiang , DAI, Xuewei , LIAO, Wuqiang , FAN, Xin
IPC分类号： H05B33/08
CPC分类号： H05B33/0818 , H05B33/083 , Y02B20/347
摘要： There is provided a current compensation device of a lighting apparatus for controlling ON/OFF of a current control switch unit in the lighting apparatus based on a sensing voltage sensed by a voltage sensing unit in the lighting apparatus and an OFF duration of the current control switch unit, characterized by including: a mapping unit which maps an ON/OFF state of at least one lighting switch unit in the lighting apparatus to ON/OFF data corresponding to an ON/OFF condition of the current control switch unit; a control unit which obtains the ON/OFF data from the mapping unit when the ON/OFF state of any of the at least one lighting switch unit changes; and a current compensation driving unit which generates a driving signal according to the sensing voltage and the ON/OFF data to control ON/OFF of the current control switch unit.
摘要翻译：提供了一种照明装置的电流补偿装置，用于基于由照明装置中的电压感测单元感测的感测电压和当前控制开关的关闭持续时间来控制照明装置中的电流控制开关单元的接通/断开单元，其特征在于包括：映射单元，其将照明装置中的至少一个照明开关单元的ON / OFF状态映射到与当前控制开关单元的ON / OFF状态相对应的ON / OFF数据; 控制单元，当所述至少一个照明开关单元中的任一个的ON / OFF状态改变时，从所述映射单元获取ON / OFF数据; 以及电流补偿驱动单元，其根据感测电压和ON / OFF数据产生驱动信号，以控制电流控制开关单元的ON / OFF。

3. 发明申请

WO2013053532A1 AN LED CONTROL CIRCUIT AND A CONTROLLING METHOD OF THE SAME 审中-公开
标题翻译：一种LED控制电路及其控制方法
公开(公告)号：WO2013053532A1
公开(公告)日：2013-04-18
申请号：PCT/EP2012/066599
申请日：2012-08-27
申请人： OSRAM GMBH , BORDIN, Luca , CHEN, Yuli , LIAO, Wuqiang , TAN, Wei
发明人： BORDIN, Luca , CHEN, Yuli , LIAO, Wuqiang , TAN, Wei
IPC分类号： H05B33/08
CPC分类号： H05B33/0827 , H05B33/0815 , H05B33/0818 , H05B33/083 , H05B33/0848
摘要： The present invention relates to an LED control circuit for controlling an LED illuminating device, the LED illuminating device comprising at least serially connected load groups (str 1 ,..., str n ), and the LED control circuit comprising: a conversion module (1) configured to convert an input voltage (V in ) to an output voltage (V out ) for the load groups (stri1,..., strn), and to output a working current (Io) of the load groups (stri 1 ,..., str n ) as a sample current (I sense ); a reference voltage generating module (2) configured to generate a reference voltage (V ref ); a control module (3) configured to compare a sample voltage (V sense ) corresponding to the sample current (I sense ) with the reference voltage (V ref ), and to output a control signal (BUCK_PWM) to the conversion module (1) according to a comparison result; and a load short circuit module (4) including a plurality of switches each connected in parallel with respective load group (str 1 ,..., str n ) for performing a short circuit control on respective load group (str 1 ,..., str n ) in response to a switching signal (PWM_str 1 ,..., PWM_str n ), wherein the LED control circuit further comprises a reference voltage compensating module (5) configured to generate a compensation voltage (V comp ) for compensating the reference voltage (V ref ) in response to the switching signal (PWM_str 1 ,..., PWM_str n ). The present invention further relates to a controlling method of such LED control circuit.
摘要翻译：本发明涉及一种用于控制LED照明装置的LED控制电路，所述LED照明装置至少包括串联连接的负载组（str1，...，strn），并且所述LED控制电路包括：转换模块（1）被配置为将输入电压（Vin）转换为用于负载组（stri1，...，strn）的输出电压（Vout），并输出负载组（stri1，...，strn）的工作电流（Io） strn）作为样本电流（Isense）; 参考电压产生模块（2），被配置为产生参考电压（Vref）; 控制模块（3），其被配置为将与所述采样电流（Isense）相对应的采样电压（Vsense）与所述参考电压（Vref）进行比较，并且根据一个所述控制模块（3）将所述控制信号（BUCK_PWM）输出到所述转换模块比较结果; 以及负载短路模块（4），其包括多个开关，每个开关与相应的负载组（str1，...，strn）并联连接，用于对各个负载组（str1，...，strn）进行短路控制，响应于开关信号（PWM_str1，...，PWM_strn），其中所述LED控制电路还包括参考电压补偿模块（5），所述参考电压补偿模块被配置为产生用于补偿所述参考电压（Vref）的补偿电压（Vcomp）到开关信号（PWM_str1，...，PWM_strn）。本发明还涉及这种LED控制电路的控制方法。

4. 发明公开

EP2767142A1 AN LED CONTROL CIRCUIT AND A CONTROLLING METHOD OF THE SAME 审中-公开
标题翻译： LED控制电路及其控制方法
公开(公告)号：EP2767142A1
公开(公告)日：2014-08-20
申请号：EP12753704.1
申请日：2012-08-27
申请人： OSRAM GmbH
发明人： BORDIN, Luca , CHEN, Yuli , LIAO, Wuqiang , TAN, Wei
IPC分类号： H05B33/08
CPC分类号： H05B33/0827 , H05B33/0815 , H05B33/0818 , H05B33/083 , H05B33/0848
摘要： The present invention relates to an LED control circuit for controlling an LED illuminating device, the LED illuminating device comprising at least serially connected load groups (str
1 ,..., str
n ), and the LED control circuit comprising: a conversion module (1) configured to convert an input voltage (V
in ) to an output voltage (V
out ) for the load groups (stri1,..., strn), and to output a working current (Io) of the load groups (stri
1 ,..., str
n ) as a sample current (I
sense ); a reference voltage generating module (2) configured to generate a reference voltage (V
ref ); a control module (3) configured to compare a sample voltage (V
sense ) corresponding to the sample current (I
sense ) with the reference voltage (V
ref ), and to output a control signal (BUCK_PWM) to the conversion module (1) according to a comparison result; and a load short circuit module (4) including a plurality of switches each connected in parallel with respective load group (str
1 ,..., str
n ) for performing a short circuit control on respective load group (str
1 ,..., str
n ) in response to a switching signal (PWM_str
1 ,..., PWM_str
n ), wherein the LED control circuit further comprises a reference voltage compensating module (5) configured to generate a compensation voltage (V
comp ) for compensating the reference voltage (V
ref ) in response to the switching signal (PWM_str
1 ,..., PWM_str
n ). The present invention further relates to a controlling method of such LED control circuit.

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