-
公开(公告)号：US20120146515A1
公开(公告)日：2012-06-14
申请号：US12962657
申请日：2010-12-08
IPC分类号： H05B37/03
CPC分类号： H05B33/0815 , Y02B20/346
摘要： A driving device for a LED module is provided. The driving device for the LED module includes a voltage converting unit, a LED module voltage detecting unit, and a switching signal generation unit. The voltage converting unit produces a driving voltage to drive the LED module according to a switching signal. The LED module voltage detecting unit divides the driving voltage to produce a comparison voltage. The switching signal generation unit receives the comparison voltage by a fault detection pin and compares a reference voltage and the comparison voltage to enable or disable the switching signal. After the switching signal is disabled, the switching signal generation unit further pulls up a voltage level of the fault detection pin to a logic high level voltage, so as to produce a fault notification signal to let the fault detection pin also have a function for fault notification.
摘要翻译： 提供了一种用于LED模块的驱动装置。 LED模块的驱动装置包括电压转换单元，LED模块电压检测单元和开关信号生成单元。 电压转换单元根据开关信号产生驱动电压以驱动LED模块。 LED模块电压检测单元分压驱动电压以产生比较电压。 开关信号发生单元通过故障检测引脚接收比较电压，并比较基准电压和比较电压，以使能或禁止开关信号。 开关信号禁止后，开关信号发生单元进一步将故障检测引脚的电压电平升高到逻辑高电平电压，以产生故障通知信号，使故障检测引脚也具有故障功能 通知。
-
公开(公告)号：US07907377B2
公开(公告)日：2011-03-15
申请号：US12318721
申请日：2009-01-07
摘要： For protecting a power system, two or three of over current, thermal and under voltage protection circuits are integrated as one protection circuit but operate independently, and one or more protection points thereof are adjusted dynamically in response to detected condition of the power system. Specifically, using voltage and current conditions in the power system to modify the over current protection and the thermal protection maximizes the performance of the power system and covers the process bias in the circuits.
摘要翻译： 为了保护电力系统，两个或三个过流，过热和欠压保护电路被集成为一个保护电路，但是独立操作，并且响应于电力系统的检测到的状态来动态地调整其一个或多个保护点。 具体来说，使用电力系统中的电压和电流条件修改过电流保护和热保护，最大限度地提高电力系统的性能，并覆盖电路中的过程偏置。
-
3.发明申请Light-load efficiency improving method and apparatus for a flyback converter 有权用于反激式转换器的轻载效率改进方法和装置公开(公告)号：US20080298095A1
公开(公告)日：2008-12-04
申请号：US11882637
申请日：2007-08-03
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M2001/0025 , H02M2001/0032 , Y02B70/16
摘要： A flyback converter has a controller to switch a power switch so as to convert an input voltage to an output voltage for a load by monitoring an output voltage dependent signal and a current sensing signal derived from a current flowing through the power switch, a light-load efficiency improving apparatus monitors the load and a supply voltage provided for the controller to selectively clamp the output voltage dependent signal when the load is lower than a first threshold value and the supply voltage is lower than a second threshold value, so as to increase the supply voltage.
摘要翻译： 反激式转换器具有控制器，用于切换电源开关，以便通过监视输出电压相关信号和从流过电源开关的电流得到的电流感测信号将输入电压转换为负载的输出电压， 负载效率改善装置监视负载和为控制器提供的电源电压，以便在负载低于第一阈值并且电源电压低于第二阈值时选择性地钳位输出电压相关信号，从而增加 电源电压。
-
公开(公告)号：US09118249B2
公开(公告)日：2015-08-25
申请号：US13559611
申请日：2012-07-27
申请人： Hung-Che Chou , Pao-Chuan Lin
发明人： Hung-Che Chou , Pao-Chuan Lin
CPC分类号： H02M3/33507 , H02M2001/327
摘要： A power conversion apparatus is disclosed. The power conversion apparatus includes a power transistor, a thermal resistor and a temperature detection circuit. A control terminal of the power transistor receives a control signal. The power transistor converts an input voltage into an output voltage according to the control signal. The thermal resistor has a negative temperature coefficient. The temperature detection circuit generates the control signal and provides a driving current to the control terminal of the power transistor according to the control signal. The temperature detection circuit further generates an over temperature protection signal according to the driving current.
摘要翻译： 公开了电力转换装置。 功率转换装置包括功率晶体管，热电阻和温度检测电路。 功率晶体管的控制端子接收控制信号。 功率晶体管根据控制信号将输入电压转换为输出电压。 热敏电阻具有负温度系数。 温度检测电路产生控制信号，并根据控制信号向功率晶体管的控制端提供驱动电流。 温度检测电路还根据驱动电流产生过温保护信号。
-
5.发明授权Load-dependent frequency jittering circuit and load-dependent frequency jittering method 有权负载相关的频率抖动电路和负载相关的频率抖动方法公开(公告)号：US07728571B2
公开(公告)日：2010-06-01
申请号：US11935558
申请日：2007-11-06
IPC分类号： G05F1/56
CPC分类号： H03K3/72
摘要： The present invention discloses a load-dependent frequency jittering circuit, comprising: a load condition detection circuit for receiving a switching signal and generating an output according to a load condition; a number generator for receiving the output of the load condition detection circuit and generating a number; a digital to analog converter for converting the output of the number generator to an analog signal; and an oscillator for generating a jittered frequency according to the output of the digital to analog converter.
摘要翻译： 本发明公开了一种负载相关的频率抖动电路，包括：负载状态检测电路，用于接收开关信号并根据负载条件产生输出; 数字发生器，用于接收负载状态检测电路的输出并产生一个数字; 用于将数字发生器的输出转换为模拟信号的数模转换器; 以及用于根据数模转换器的输出产生抖动频率的振荡器。
-
公开(公告)号：US07570121B2
公开(公告)日：2009-08-04
申请号：US11821498
申请日：2007-06-25
IPC分类号： H03L7/00
摘要： A frequency jittering control circuit wherein by means of the characteristics of a PLL whose input switches between different frequencies, the output frequency of the PLL swings between the different frequencies to achieve the desired frequency jittering.
摘要翻译： 一种频率抖动控制电路，其中通过PLL的特性，其输入在不同频率之间切换，PLL的输出频率在不同频率之间摆动，以实现期望的频率抖动。
-
公开(公告)号：US07535690B2
公开(公告)日：2009-05-19
申请号：US11518446
申请日：2006-09-11
摘要： For protecting a power system, two or three of over current, thermal and under voltage protection circuits are integrated as one protection circuit but operate independently, and one or more protection points thereof are adjusted dynamically in response to detected condition of the power system. Specifically, using voltage and current conditions in the power system to modify the over current protection and the thermal protection maximizes the performance of the power system and covers the process bias in the circuits.
摘要翻译： 为了保护电力系统，两个或三个过流，过热和欠压保护电路被集成为一个保护电路，但是独立操作，并且响应于电力系统的检测到的状态来动态地调整其一个或多个保护点。 具体来说，使用电力系统中的电压和电流条件修改过电流保护和热保护，最大限度地提高电力系统的性能，并覆盖电路中的过程偏置。
-
公开(公告)号：US20140071718A1
公开(公告)日：2014-03-13
申请号：US13610874
申请日：2012-09-12
申请人： Pao-Chuan Lin , Su-Yuan Lin , Hung-Che Chou
发明人： Pao-Chuan Lin , Su-Yuan Lin , Hung-Che Chou
IPC分类号： H02M3/335
CPC分类号： H02M1/32 , H02M3/33523
摘要： A structure of a fly-back power converting apparatus is disclosed. The structure includes a power transistor, a current detector, a pulse width modulation (PWM) signal generator and a current limiter. The power transistor is coupled to an input voltage and receives a PWM signal. The current detector detects a current output from the power transistor and generates a detecting voltage according to the current. The PWM signal generator generates the PWM signal according to a comparing result by comparing the detecting voltage and a standard voltage. The current limiter generates the standard voltage according to a turn-on time of the power transistor.
摘要翻译： 公开了一种回扫功率转换装置的结构。 该结构包括功率晶体管，电流检测器，脉宽调制（PWM）信号发生器和限流器。 功率晶体管耦合到输入电压并接收PWM信号。 电流检测器检测来自功率晶体管的电流输出，并根据电流产生检测电压。 根据比较结果，PWM信号发生器通过比较检测电压和标准电压来生成PWM信号。 电流限制器根据功率晶体管的导通时间产生标准电压。
-
公开(公告)号：US07714551B2
公开(公告)日：2010-05-11
申请号：US11705090
申请日：2007-02-12
IPC分类号： G05F1/40
CPC分类号： G05F1/565
摘要： A linear voltage regulator comprises a transistor for converting a supply voltage to an output voltage. By directly monitoring the supply voltage and thereby rapidly responding when the supply voltage suffers a ripple, the linear voltage regulator enhances the stability of the output voltage.
摘要翻译： 线性稳压器包括用于将电源电压转换为输出电压的晶体管。 通过直接监控电源电压，从而在电源电压受到纹波时快速响应，线性稳压器可提高输出电压的稳定性。
-
公开(公告)号：US09025346B2
公开(公告)日：2015-05-05
申请号：US13610874
申请日：2012-09-12
申请人： Pao-Chuan Lin , Su-Yuan Lin , Hung-Che Chou
发明人： Pao-Chuan Lin , Su-Yuan Lin , Hung-Che Chou
CPC分类号： H02M1/32 , H02M3/33523
摘要： A structure of a fly-back power converting apparatus is disclosed. The structure includes a power transistor, a current detector, a pulse width modulation (PWM) signal generator and a current limiter. The power transistor is coupled to an input voltage and receives a PWM signal. The current detector detects a current output from the power transistor and generates a detecting voltage according to the current. The PWM signal generator generates the PWM signal according to a comparing result by comparing the detecting voltage and a standard voltage. The current limiter generates the standard voltage according to a turn-on time of the power transistor.
摘要翻译： 公开了一种回扫功率转换装置的结构。 该结构包括功率晶体管，电流检测器，脉宽调制（PWM）信号发生器和限流器。 功率晶体管耦合到输入电压并接收PWM信号。 电流检测器检测来自功率晶体管的电流输出，并根据电流产生检测电压。 根据比较结果，PWM信号发生器通过比较检测电压和标准电压来生成PWM信号。 电流限制器根据功率晶体管的导通时间产生标准电压。
-
-
-
-
-
-
-
-
-
搜索结果
29 条记录 (耗时 0.012 秒)