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1. 发明申请

WO2012112750A1 TRIAC DIMMER DETECTION 审中-公开
标题翻译： TRIAC调光器检测
公开(公告)号：WO2012112750A1
公开(公告)日：2012-08-23
申请号：PCT/US2012/025395
申请日：2012-02-16
申请人： MARVELL WORLD TRADE LTD. , CHOI, Jinho , PENG, Hao , ZHANG, Wanfeng , DOAN, Tuyen
发明人： CHOI, Jinho , PENG, Hao , ZHANG, Wanfeng , DOAN, Tuyen
IPC分类号： G01R13/00
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，数字信号发生器可产生多个数字信号。通过查看数字信号变高和变低的时间可以确定达到阈值电压的时间。数字信号变高和变低的时间之差用于确定交流信号输入是前沿还是后沿斩波信号。当数字信号变高的时间之间的差小于预定的时间阈值时，AC输入信号是前沿斩波信号，并且当数字信号变成时间之间的差时，是后沿斩波信号低于预定的时间阈值。

2. 发明申请

WO2014035893A1 METHOD AND APPARATUS FOR CONTROLLING A LIGHTING DEVICE 审中-公开
标题翻译：用于控制照明设备的方法和装置
公开(公告)号：WO2014035893A1
公开(公告)日：2014-03-06
申请号：PCT/US2013/056646
申请日：2013-08-26
申请人： MARVELL WORLD TRADE LTD. , PENG, Hao , ZHANG, Wanfeng , CHOI, Jinho , DOAN, Tuyen
发明人： PENG, Hao , ZHANG, Wanfeng , CHOI, Jinho , DOAN, Tuyen
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H02M3/33507 , Y02B20/346
摘要： Aspects of the disclosure provide a method. The method includes determining a power adjustment to a load, determining whether a switching frequency of a pulse width modulation (PWM) signal is within a specific range, and adjusting the switching frequency of the PWM signal based on the power adjustment to control power transfer to the load. The switching frequency is adjusted to remain in the specific range.
摘要翻译：本公开的方面提供了一种方法。该方法包括确定对负载的功率调整，确定脉宽调制（PWM）信号的开关频率是否在特定范围内，以及基于功率调整来调整PWM信号的开关频率以控制功率传输负载。开关频率被调整为保持在特定范围内。

3. 发明申请

WO2012121912A3 TWO-PEAK CURRENT CONTROL FOR FLYBACK VOLTAGE CONVERTERS 审中-公开
公开(公告)号：WO2012121912A3
公开(公告)日：2012-09-13
申请号：PCT/US2012/026687
申请日：2012-02-27
申请人： MARVELL WORLD TRADE LTD. , CHOI, Jinho , PENG, Hao , ZHANG, Wanfeng , DOAN, Tuyen
发明人： CHOI, Jinho , PENG, Hao , ZHANG, Wanfeng , DOAN, Tuyen
IPC分类号： H02M1/42 , H02M3/335 , H05B33/08
摘要： A current control in a Flyback converter. The converter input is a rectified pulsating (sinusoidal) voltage. The output current peak is limited to different levels at different time instants of the sinusoidal fundamental.

4. 发明申请

WO2013138634A1 METHOD AND APPARATUS FOR STARTING UP 审中-公开
标题翻译：开始使用的方法和装置
公开(公告)号：WO2013138634A1
公开(公告)日：2013-09-19
申请号：PCT/US2013/031543
申请日：2013-03-14
申请人： MARVELL WORLD TRADE LTD , PENG, Hao , CHOI, Jinho , SHU, Biing, Long
发明人： PENG, Hao , CHOI, Jinho , SHU, Biing, Long
IPC分类号： H05B33/08
CPC分类号： H02M3/33507 , H02M3/33523 , H02M3/33546 , H05B33/0815 , H05B33/0848
摘要： Aspects of the disclosure provide a method. The method includes receiving an input voltage rectified from an alternating current (AC) power supply, detecting a time duration that the input voltage is between a first threshold voltage and a second threshold voltage, determining a line voltage of the AC power supply based on the time duration, and regulating a time for turning on a switch to transfer energy via a transformer based on the detected line voltage.
摘要翻译：本公开的方面提供了一种方法。该方法包括接收从交流（AC）电源整流的输入电压，检测输入电压在第一阈值电压和第二阈值电压之间的持续时间，基于所述交流电源确定交流电源的线路电压并且基于检测到的线路电压调节用于接通开关以经由变压器传递能量的时间。

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