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1. 发明授权

US08896288B2 TRIAC dimmer detection 有权
标题翻译： TRIAC调光器检测
公开(公告)号：US08896288B2
公开(公告)日：2014-11-25
申请号：US13398150
申请日：2012-02-16
申请人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
发明人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
IPC分类号： G01D1/14 , H05B33/08 , H02M3/335 , H02M1/08 , H02M1/00
CPC分类号： G01R19/0084 , G01R17/02 , H02M1/082 , H02M3/33523 , H02M2001/0022 , H05B33/0854
摘要： Methods, circuits, and systems for determining the presence of a chopped input signal are disclosed. A digital signal generator can produce multiple digital signals when an alternating current (AC) signal input reaches multiple threshold voltages. The times at which the threshold voltages are reached can be determined by looking at the times at which the digital signals go high and low. The differences between the times at which the digital signals go high and low are used to determine if the AC signal input is a leading or trailing edge chopped signal. The AC input signal is a leading edge chopped signal when the difference between the times at which the digital signals go high is less than a predetermined time threshold, and is a trailing edge chopped signal when the difference between the times at which the digital signals go low is less than a predetermined time threshold.
摘要翻译：公开了用于确定斩波输入信号的存在的方法，电路和系统。当交流（AC）信号输入达到多个阈值电压时，数字信号发生器可以产生多个数字信号。达到阈值电压的时间可以通过查看数字信号变为高电平和低电平的时间来确定。使用数字信号变为高电平和低电平的时间之间的差异来确定AC信号输入是前导或后沿斩波信号。当数字信号变高的时间之间的差小于预定时间阈值时，AC输入信号是前沿斩波信号，并且当数字信号到达时间之间的差异时是后沿斩波信号低于预定时间阈值。

2. 发明申请

US20120212258A1 TRIAC Dimmer Detection 有权
标题翻译： TRIAC调光器检测
公开(公告)号：US20120212258A1
公开(公告)日：2012-08-23
申请号：US13398150
申请日：2012-02-16
申请人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
发明人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
IPC分类号： H03K5/153
CPC分类号： G01R19/0084 , G01R17/02 , H02M1/082 , H02M3/33523 , H02M2001/0022 , H05B33/0854
摘要： Methods, circuits, and systems for determining the presence of a chopped input signal are disclosed. A digital signal generator can produce multiple digital signals when an alternating current (AC) signal input reaches multiple threshold voltages. The times at which the threshold voltages are reached can be determined by looking at the times at which the digital signals go high and low. The differences between the times at which the digital signals go high and low are used to determine if the AC signal input is a leading or trailing edge chopped signal. The AC input signal is a leading edge chopped signal when the difference between the times at which the digital signals go high is less than a predetermined time threshold, and is a trailing edge chopped signal when the difference between the times at which the digital signals go low is less than a predetermined time threshold.
摘要翻译：公开了用于确定斩波输入信号的存在的方法，电路和系统。当交流（AC）信号输入达到多个阈值电压时，数字信号发生器可以产生多个数字信号。达到阈值电压的时间可以通过查看数字信号变为高电平和低电平的时间来确定。使用数字信号变为高电平和低电平的时间之间的差异来确定AC信号输入是前导或后沿斩波信号。当数字信号变高的时间之间的差小于预定时间阈值时，AC输入信号是前沿斩波信号，并且当数字信号到达时间之间的差异时是后沿斩波信号低于预定时间阈值。

3. 发明授权

US08947895B2 Two-peak current control for flyback voltage converters 有权
标题翻译：用于回扫电压转换器的两峰电流控制
公开(公告)号：US08947895B2
公开(公告)日：2015-02-03
申请号：US13404584
申请日：2012-02-24
申请人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
发明人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
IPC分类号： G05F1/00 , H02M3/335 , H02M1/42 , H05B33/08 , H02M1/00
CPC分类号： H02M3/33523 , H02M1/4258 , H02M2001/0022 , H05B33/0815 , Y02B20/347 , Y02B70/126
摘要： A system including a switch configured to supply power to a load. A first comparator is configured to compare a first current through the switch to a first threshold. A second comparator is configured to compare the first current through the switch to a second threshold. The second threshold is greater than the first threshold. A current control module is configured to turn off the switch (i) for a first duration in response to the first current through the switch being greater than or equal to the first threshold and (ii) for a second duration in response to the first current through the switch being greater than or equal to the second threshold. The current control module is configured to adjust the second duration based on a difference between an estimated current through the load and a desired current through the load.
摘要翻译：一种包括被配置为向负载供电的开关的系统。第一比较器被配置为将通过开关的第一电流与第一阈值进行比较。第二比较器被配置为将通过开关的第一电流与第二阈值进行比较。第二阈值大于第一阈值。电流控制模块被配置为响应于通过开关的第一电流而将开关（i）的第一持续时间关断大于或等于第一阈值，以及（ii）响应于第一电流的第二持续时间通过开关大于或等于第二阈值。电流控制模块被配置为基于通过负载的估计电流与通过负载的期望电流之间的差来调整第二持续时间。

4. 发明申请

US20120230065A1 Two-Peak Current Control for Flyback Voltage Converters 有权
标题翻译：反激电压转换器的两峰电流控制
公开(公告)号：US20120230065A1
公开(公告)日：2012-09-13
申请号：US13404584
申请日：2012-02-24
申请人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
发明人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M1/4258 , H02M2001/0022 , H05B33/0815 , Y02B20/347 , Y02B70/126
摘要： A system including a switch configured to supply power to a load. A first comparator is configured to compare a first current through the switch to a first threshold. A second comparator is configured to compare the first current through the switch to a second threshold. The second threshold is greater than the first threshold. A current control module is configured to turn off the switch (i) for a first duration in response to the first current through the switch being greater than or equal to the first threshold and (ii) for a second duration in response to the first current through the switch being greater than or equal to the second threshold. The current control module is configured to adjust the second duration based on a difference between an estimated current through the load and a desired current through the load.
摘要翻译：一种包括被配置为向负载供电的开关的系统。第一比较器被配置为将通过开关的第一电流与第一阈值进行比较。第二比较器被配置为将通过开关的第一电流与第二阈值进行比较。第二阈值大于第一阈值。电流控制模块被配置为响应于通过开关的第一电流而将开关（i）的第一持续时间关断大于或等于第一阈值，以及（ii）响应于第一电流的第二持续时间通过开关大于或等于第二阈值。电流控制模块被配置为基于通过负载的估计电流与通过负载的期望电流之间的差来调整第二持续时间。

5. 发明授权

US09042124B1 Circuits and methods for determining peak current 有权
标题翻译：用于确定峰值电流的电路和方法
公开(公告)号：US09042124B1
公开(公告)日：2015-05-26
申请号：US13439097
申请日：2012-04-04
申请人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
发明人： Jinho Choi , Hao Peng , Wanfeng Zhang , Tuyen Doan
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/33523
摘要： Embodiments include circuits and methods to determine peak current for current regulation. A control signal circuit monitors a current on the primary side of a transformer based a turn on time of a switch coupled to the primary side. The control signal circuit determines whether the monitored current exceeds an over-current protection threshold, and determines a duration that the monitored current exceeds the over-current protection threshold. The control signal circuit determines a peak primary current in the primary side based on the over-current protection threshold, the duration that the monitored current exceeds the over-current protection threshold, and the turn on time of the switch. The control signal circuit controls the turn on time for the switch based on the determined peak primary current.
摘要翻译：实施例包括用于确定电流调节的峰值电流的电路和方法。控制信号电路基于耦合到初级侧的开关的接通时间监视变压器初级侧的电流。控制信号电路确定监视的电流是否超过过电流保护阈值，并且确定监视电流超过过流保护阈值的持续时间。控制信号电路基于过流保护阈值，监视电流超过过电流保护阈值的持续时间和开关的导通时间来确定初级侧的峰值初级电流。控制信号电路基于所确定的峰值一次电流来控制开关的导通时间。

6. 发明授权

US09497807B2 Dimmer circuit for electronic loads 有权
标题翻译：电子负载调光电路
公开(公告)号：US09497807B2
公开(公告)日：2016-11-15
申请号：US13023379
申请日：2011-02-08
申请人： Radu Pitigoi-Aron , Wanfeng Zhang , Jinho Choi
发明人： Radu Pitigoi-Aron , Wanfeng Zhang , Jinho Choi
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/0815 , Y02B20/383
摘要： In one embodiment, a dimmer circuit is coupled to an electronic load and receives an alternating current (AC) signal. A phase control circuit turns the dimmer circuit on for a first portion of the AC signal to turn on the electronic load. The dimmer circuit turns off during a second portion of the AC signal to turn off the electronic load. A switch is coupled to the phase control circuit. The switch is controlled to couple the phase control circuit to ground when the dimmer circuit is off where the switch is part of a power supply supplying power to the electronic load.
摘要翻译：在一个实施例中，调光电路耦合到电子负载并且接收交流（AC）信号。相位控制电路将交流信号的第一部分的调光电路导通，以接通电子负载。在交流信号的第二部分期间，调光器电路关闭以关闭电子负载。开关耦合到相位控制电路。当调光器电路断开时，开关被控制为将相位控制电路耦合到地，其中开关是向电子负载供电的电源的一部分。

7. 发明授权

US08847517B2 TRIAC dimming systems for solid-state loads 有权
标题翻译：用于固态负载的TRIAC调光系统
公开(公告)号：US08847517B2
公开(公告)日：2014-09-30
申请号：US13525711
申请日：2012-06-18
申请人： Sehat Sutardja , Pantas Sutardja , Wanfeng Zhang , Jinho Choi
发明人： Sehat Sutardja , Pantas Sutardja , Wanfeng Zhang , Jinho Choi
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/0815 , H02M3/33507 , H05B33/0851
摘要： A system includes a transformer. The transformer includes a first coil and a second coil. The first coil is configured to receive a first voltage based on an output of a switching circuit. The second coil is configured to generate a first current based on the first voltage to power a solid-state load. The system also includes a third coil. The third coil is configured to generate a second voltage based on the first voltage.
摘要翻译：一个系统包括一个变压器。变压器包括第一线圈和第二线圈。第一线圈被配置为基于开关电路的输出接收第一电压。第二线圈被配置为基于第一电压产生第一电流以对固态负载供电。该系统还包括第三线圈。第三线圈被配置为基于第一电压产生第二电压。

8. 发明申请

US20120081029A1 Average Output Current Estimation Using Primary-Side Sensing 失效
标题翻译：使用初级侧感测的平均输出电流估计
公开(公告)号：US20120081029A1
公开(公告)日：2012-04-05
申请号：US13246515
申请日：2011-09-27
申请人： Jinho Choi , Yangsoo Park , Wanfeng Zhang
发明人： Jinho Choi , Yangsoo Park , Wanfeng Zhang
IPC分类号： H05B37/02 , H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0009 , H05B33/0815
摘要： In one embodiment, an apparatus includes a transformer comprising a primary side and a secondary side. A switch is coupled to the primary side. A control signal circuit is configured to: sample a first current on the primary side of the transformer; estimate a second current value on the secondary side of the transformer using the sampling of the first current on the primary side and a turn ratio of the transformer; and output a signal to control a turn on time for the switch.
摘要翻译：在一个实施例中，一种装置包括一个包括初级侧和次级侧的变压器。开关耦合到初级侧。控制信号电路被配置为：对变压器的初级侧的第一电流进行采样; 使用初级侧的第一电流的采样和变压器的匝数比来估计变压器次级侧的第二电流值; 并输出信号以控制开关的导通时间。

9. 发明授权

US08811046B2 Primary side voltage control in flyback converter 有权
标题翻译：反激式转换器中的初级侧电压控制
公开(公告)号：US08811046B2
公开(公告)日：2014-08-19
申请号：US13159252
申请日：2011-06-13
申请人： Yangsoo Park , Jinho Choi , Wanfeng Zhang
发明人： Yangsoo Park , Jinho Choi , Wanfeng Zhang
IPC分类号： H02M3/335
CPC分类号： H02M3/33515
摘要： In one embodiment, an apparatus includes a sampling component. The sampling component receives a first voltage signal on a primary side of a transformer and monitors the first voltage signal to determine a voltage sampling time. The determined voltage sampling time is when the first voltage signal is used to estimate a second voltage level on a secondary side of the transformer. The first component further samples the first voltage signal at the voltage sampling time to determine a first voltage level. A second component outputs a control signal to control a switch to regulate the second voltage level based on the first voltage level.
摘要翻译：在一个实施例中，装置包括采样部件。采样分量在变压器的初级侧接收第一电压信号，并监视第一电压信号以确定电压采样时间。确定的电压采样时间是当第一电压信号用于估计变压器次级侧上的第二电压电平时。第一分量在电压采样时间进一步采样第一电压信号以确定第一电压电平。第二分量输出控制信号以控制开关以基于第一电压电平来调节第二电压电平。

10. 发明授权

US08704455B2 Average output current estimation using primary-side sensing 失效
标题翻译：使用初级侧感测的平均输出电流估计
公开(公告)号：US08704455B2
公开(公告)日：2014-04-22
申请号：US13246515
申请日：2011-09-27
申请人： Jinho Choi , Yangsoo Park , Wanfeng Zhang
发明人： Jinho Choi , Yangsoo Park , Wanfeng Zhang
IPC分类号： H05B37/02
CPC分类号： H02M3/33507 , H02M2001/0009 , H05B33/0815
摘要： In one embodiment, an apparatus includes a transformer comprising a primary side and a secondary side. A switch is coupled to the primary side. A control signal circuit is configured to: sample a first current on the primary side of the transformer; estimate a second current value on the secondary side of the transformer using the sampling of the first current on the primary side and a turn ratio of the transformer; and output a signal to control a turn on time for the switch.
摘要翻译：在一个实施例中，一种装置包括一个包括初级侧和次级侧的变压器。开关耦合到初级侧。控制信号电路被配置为：对变压器的初级侧的第一电流进行采样; 使用初级侧的第一电流的采样和变压器的匝数比来估计变压器次级侧的第二电流值; 并输出信号以控制开关的导通时间。

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