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1. 发明授权

US09190917B2 Isolated flyback converter for light emitting diode driver 有权
标题翻译：用于发光二极管驱动器的隔离反激式转换器
公开(公告)号：US09190917B2
公开(公告)日：2015-11-17
申请号：US13472823
申请日：2012-05-16
申请人： Jong Tae Hwang , Moonsang Jung , Daeho Kim , SooHyun Moon , JongHa Shin , MinHo Jung , JunHong Lee
发明人： Jong Tae Hwang , Moonsang Jung , Daeho Kim , SooHyun Moon , JongHa Shin , MinHo Jung , JunHong Lee
IPC分类号： H05B37/02 , H02M3/335 , H05B33/08 , H02M1/42 , H02M1/00 , H02M1/34
CPC分类号： H02M3/33523 , H02M1/4258 , H02M2001/0009 , H02M2001/348 , H05B33/0815 , Y02B70/126
摘要： An isolated flyback converter for an LED driver may include: (1) A snubber circuit configured to be connected to the primary side of a transformer. (2) A switching unit configured to have a source terminal and a drain terminal and configured to be turned on or off. (3) A control unit configured to detect a first input signal proportional to a fluctuation in the power supply voltage, detect a second input signal when the switching unit is turned off, generate a signal inversely proportional to the maximum value of the first input signal and multiply the generated signal to the second input signal, and control a peak current of the switching unit to be proportional to the multiplication result of the signal inversely proportional to the maximum value of the first input signal and the second input signal such that a secondary-side current of the transformer is maintained constant.
摘要翻译：用于LED驱动器的隔离反激式转换器可以包括：（1）缓冲电路，被配置为连接到变压器的初级侧。（2）一种开关单元，被配置为具有源极端子和漏极端子并且被配置为导通或截止。（3）一种控制单元，被配置为检测与电源电压的波动成比例的第一输入信号，当切换单元关闭时检测第二输入信号，产生与第一输入信号的最大值成反比的信号并将所生成的信号与第二输入信号相乘，并且控制开关单元的峰值电流与与第一输入信号和第二输入信号的最大值成反比的信号的相乘结果成比例，使得次级变压器的旁路电流保持恒定。

2. 发明申请

US20130063039A1 ISOLATED FLYBACK CONVERTER FOR LIGHT EMITTING DIODE DRIVER 有权
标题翻译：用于发光二极管驱动器的隔离式逆变器
公开(公告)号：US20130063039A1
公开(公告)日：2013-03-14
申请号：US13472823
申请日：2012-05-16
申请人： Jong Tae HWANG , Moonsang Jung , Daeho Kim , SooHyun Moon , JongHa Shin , MinHo Jung , JunHong Lee
发明人： Jong Tae HWANG , Moonsang Jung , Daeho Kim , SooHyun Moon , JongHa Shin , MinHo Jung , JunHong Lee
IPC分类号： H05B37/02 , H02M3/335
CPC分类号： H02M3/33523 , H02M1/4258 , H02M2001/0009 , H02M2001/348 , H05B33/0815 , Y02B70/126
摘要： An isolated flyback converter for an LED driver may include: (1) A snubber circuit configured to be connected to the primary side of a transformer. (2) A switching unit configured to have a source terminal and a drain terminal and configured to be turned on or off. (3) A control unit configured to detect a first input signal proportional to a fluctuation in the power supply voltage, detect a second input signal when the switching unit is turned off, generate a signal inversely proportional to the maximum value of the first input signal and multiply the generated signal to the second input signal, and control a peak current of the switching unit to be proportional to the multiplication result of the signal inversely proportional to the maximum value of the first input signal and the second input signal such that a secondary-side current of the transformer is maintained constant.
摘要翻译：用于LED驱动器的隔离反激式转换器可以包括：（1）缓冲电路，被配置为连接到变压器的初级侧。（2）一种开关单元，被配置为具有源极端子和漏极端子并且被配置为导通或截止。（3）一种控制单元，被配置为检测与电源电压的波动成比例的第一输入信号，当切换单元关闭时检测第二输入信号，产生与第一输入信号的最大值成反比的信号并将所生成的信号与第二输入信号相乘，并且控制开关单元的峰值电流与与第一输入信号和第二输入信号的最大值成反比的信号的相乘结果成比例，使得次级变压器的旁路电流保持恒定。

3. 发明申请

US20130033197A1 ISOLATED FLYBACK CONVERTER FOR LIGHT EMITTING DIODE DRIVER 有权
标题翻译：用于发光二极管驱动器的隔离式逆变器
公开(公告)号：US20130033197A1
公开(公告)日：2013-02-07
申请号：US13468330
申请日：2012-05-10
申请人： Jong Tae Hwang , Moonsang Jung , Daeho Kim
发明人： Jong Tae Hwang , Moonsang Jung , Daeho Kim
IPC分类号： H05B41/282
CPC分类号： H05B33/0815
摘要： An isolated flyback converter for an LED driver includes a snubber circuit unit connected to the primary side of a transformer; and a snubber voltage detection unit which detects a snubber voltage of the snubber circuit unit and generates a reference voltage proportional to the detected snubber voltage. Further, the isolated flyback converter includes a switching unit with a source terminal and a drain terminal, and may be turned on or off in response to an arbitrary logic signal. Furthermore, the isolated flyback converter includes a control unit which compares a voltage supplied through the switching current sensing resistor with the reference voltage, and supplies a logic signal at relatively high level or relatively low level to the switching unit to control the switching unit such that a secondary-side current of the transformer is maintained relatively constant.
摘要翻译：用于LED驱动器的隔离反激转换器包括连接到变压器初级侧的缓冲电路单元; 以及缓冲电压检测单元，其检测缓冲电路单元的缓冲电压并产生与检测到的缓冲电压成比例的参考电压。此外，隔离反激式转换器包括具有源极端子和漏极端子的开关单元，并且可以响应于任意逻辑信号而导通或关断。此外，隔离反激式转换器包括：控制单元，其将通过开关电流检测电阻器提供的电压与参考电压进行比较，并将相对较高电平或相对低电平的逻辑信号提供给开关单元，以控制开关单元，使得变压器的次级侧电流保持相对恒定。

4. 发明授权

US08674627B2 Isolated flyback converter for light emitting diode driver 有权
标题翻译：用于发光二极管驱动器的隔离反激式转换器
公开(公告)号：US08674627B2
公开(公告)日：2014-03-18
申请号：US13468330
申请日：2012-05-10
申请人： Jong Tae Hwang , Moonsang Jung , Daeho Kim
发明人： Jong Tae Hwang , Moonsang Jung , Daeho Kim
IPC分类号： H05B37/02 , H02M3/335
CPC分类号： H05B33/0815
摘要： An isolated flyback converter for an LED driver includes a snubber circuit unit connected to the primary side of a transformer; and a snubber voltage detection unit which detects a snubber voltage of the snubber circuit unit and generates a reference voltage proportional to the detected snubber voltage. Further, the isolated flyback converter includes a switching unit with a source terminal and a drain terminal, and may be turned on or off in response to an arbitrary logic signal. Furthermore, the isolated flyback converter includes a control unit which compares a voltage supplied through the switching current sensing resistor with the reference voltage, and supplies a logic signal at relatively high level or relatively low level to the switching unit to control the switching unit such that a secondary-side current of the transformer is maintained relatively constant.
摘要翻译：用于LED驱动器的隔离反激转换器包括连接到变压器初级侧的缓冲电路单元; 以及缓冲电压检测单元，其检测缓冲电路单元的缓冲电压并产生与检测到的缓冲电压成比例的参考电压。此外，隔离反激式转换器包括具有源极端子和漏极端子的开关单元，并且可以响应于任意逻辑信号而导通或关断。此外，隔离反激式转换器包括：控制单元，其将通过开关电流检测电阻器提供的电压与参考电压进行比较，并将相对较高电平或相对低电平的逻辑信号提供给开关单元，以控制开关单元，使得变压器的次级侧电流保持相对恒定。

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