公开(公告)号：US20080136343A1

公开(公告)日：2008-06-12

申请号：US11201999

申请日：2005-08-11

申请人： Chung-Che Yu ,  Chien-Cheng Yang

发明人： Chung-Che Yu ,  Chien-Cheng Yang

IPC分类号： H05B37/02 ,  H02M7/5387 ,  H05B41/36

CPC分类号： H05B41/2827 ,  H05B41/3925

摘要： A resonant DC/AC inverter includes a DC power source providing a DC voltage, a half-bridge power switch circuit electrically connected to the DC power source being operative to convert the DC voltage to an AC voltage, a resonant tank electrically connected between an output of the half-bridge power switch circuit and an input of a load being operative to boost and filter the AC voltage to generate an AC power voltage supplied to the load, and a controller being operative to detect a magnitude of current in the load and a magnitude of a voltage across the load and to generate pulse waveforms for turning on and off the half-bridge power switch circuit, wherein the controller substantially instantaneously varies a frequency of the pulse waveforms and a duty cycle of the pulse waveforms so as to operate the resonant DC/AC inverter near a neighborhood of a resonant frequency of the resonant tank regardless of a conduction state of the load and improve the efficiency of the inverter regardless of the higher DC voltage applied to the inverter. Particularly, the resonant DC/AC inverter utilizes a piezoelectric transformer to supply power to a fluorescent lamp which is wildly employed in display panels and is extensively used to provide backlighting for liquid crystal displays (LCDs), especially for backlighting LCD monitors and LCD televisions.

摘要翻译： 谐振DC / AC逆变器包括提供DC电压的DC电源，电连接到直流电源的半桥功率开关电路，其操作以将DC电压转换为AC电压，电连接在输出端 所述半桥电源开关电路的输入和负载的输入端用于升压和过滤所述AC电压以产生提供给所述负载的AC电力电压，以及控制器，用于检测所述负载中的电流的大小，以及 负载上的电压的大小，并产生用于导通和关断半桥电源开关电路的脉冲波形，其中控制器基本瞬时地改变脉冲波形的频率和脉冲波形的占空比，以便操作 谐振回路附近的谐振DC / AC逆变器，无论负载的导通状态如何，并提高了逆变器的效率 施加到逆变器的较高直流电压的ss。 特别地，谐振DC / AC逆变器利用压电变压器向显示面板中广泛使用的荧光灯供电，并广泛用于为液晶显示器（LCD）提供背光，特别是用于背光LCD显示器和液晶电视。

公开(公告)号：US09288853B2

公开(公告)日：2016-03-15

申请号：US13354343

申请日：2012-01-20

申请人： Chung-Che Yu

发明人： Chung-Che Yu

IPC分类号： H05B37/00 ,  H05B33/08

CPC分类号： H05B33/0815 ,  H05B33/0848

摘要： The present invention discloses an LED driving circuit and controller, capable of maintaining an average value of a current flowing through an LED module at a predetermined current value. The LED driving circuit and controller compensates influences of any factors deviating the average value of the current flowing through the LED module by modulating a period of constant on time or constant off time, or by modulating the determining value(s) of current peak value and/or current valley value according to a difference between an actual average value and the preset current value.

摘要翻译： 本发明公开了一种LED驱动电路和控制器，其能够将流过LED模块的电流的平均值保持在预定电流值。 LED驱动电路和控制器通过调制恒定导通时间或恒定关闭时间的周期，或通过调制电流峰值的确定值来补偿影响流过LED模块的电流的平均值的任何因素的影响， /或当前谷值根据实际平均值和预置电流值之间的差值。

公开(公告)号：US09024611B2

公开(公告)日：2015-05-05

申请号：US13585811

申请日：2012-08-14

申请人： Li-Min Lee ,  Quan Gan ,  Shian-Sung Shiu ,  Chung-Che Yu

发明人： Li-Min Lee ,  Quan Gan ,  Shian-Sung Shiu ,  Chung-Che Yu

IPC分类号： G05F1/10 ,  H02M3/156 ,  H02M1/32 ,  H01L21/00 ,  H02H3/10 ,  H02H7/122 ,  H02M3/158

CPC分类号： H02M3/156 ,  H01L21/00 ,  H02H3/10 ,  H02H7/1222 ,  H02H7/1227 ,  H02M1/32 ,  H02M3/158

摘要： A controller with a multi-function pin, adapted to control a converting circuit according to a control signal for converting an input voltage into an output voltage, is disclosed. The controller has the multi-function pin, an enable unit, an over-current detecting unit and a logic control unit. The enable unit is coupled to the multi-function pin for receiving an enable signal and activates the controller in response to the enable signal. The over-current detecting is coupled to the multi-function pin and determines an over-current value according to an over-current set resistance coupled between the multi-function pin and a voltage source. The over-current detecting unit generates an over-current protection signal according to the over-current value and a current flowing through the converting circuit. The logic control unit determines whether executing an over-current protection according to the over-current protection signal.

摘要翻译： 公开了一种具有多功能引脚的控制器，其适于根据用于将输入电压转换为输出电压的控制信号来控制转换电路。 控制器具有多功能引脚，使能单元，过流检测单元和逻辑控制单元。 使能单元耦合到多功能引脚，用于接收使能信号，并响应于使能信号激活控制器。 过电流检测耦合到多功能引脚，并根据耦合在多功能引脚和电压源之间的过电流设定电阻确定过电流值。 过流检测单元根据过电流值和流过转换电路的电流产生过电流保护信号。 逻辑控制单元根据过电流保护信号判定是否执行过电流保护。

公开(公告)号：US08558483B2

公开(公告)日：2013-10-15

申请号：US13118557

申请日：2011-05-30

申请人： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Xi Tu

发明人： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Xi Tu

IPC分类号： H05B37/02

CPC分类号： H05B33/0824 ,  H05B33/0815

摘要： A non-linear load driving circuit and a controller for controlling a conversion circuit to drive a non-linear load are provided. The controller includes a feedback unit, a pulse width control unit, and an overshoot reduction unit. The feedback unit generates a feedback signal according to a current feedback signal that represents a load current flowing through the non-linear load. The pulse width control unit generates a control signal according to the feedback signal to control a power output of the conversion circuit. The overshoot reduction unit generates an overshoot reduction signal when the load current changes from being smaller than to being greater than a predetermined value according to the current feedback signal. The pulse width control unit receives the overshoot reduction signal and reduces the duty cycle of the control signal accordingly. Thereby, stability of feedback control is improved and damage to circuit is prevented.

摘要翻译： 提供了非线性负载驱动电路和用于控制转换电路以驱动非线性负载的控制器。 控制器包括反馈单元，脉冲宽度控制单元和过冲减少单元。 反馈单元根据表示流过非线性负载的负载电流的电流反馈信号产生反馈信号。 脉冲宽度控制单元根据反馈信号产生控制信号，以控制转换电路的功率输出。 当负载电流根据电流反馈信号从小于大于预定值变化时，过冲减少单元产生过冲减小信号。 脉冲宽度控制单元接收过冲减小信号并相应地减小控制信号的占空比。 由此，能够提高反馈控制的稳定性，防止对电路的损坏。

公开(公告)号：US08552768B2

公开(公告)日：2013-10-08

申请号：US13244636

申请日：2011-09-25

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Si-Min Wu

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Si-Min Wu

IPC分类号： H03B1/00 ,  H03K3/00

CPC分类号： H02M1/38 ,  H02M3/156

摘要： A synchronous driving circuit in the arts may cause a short through pheromone when a duty cycle of a duty cycle control signal is too short. The present invention sets a delay time with a suitable period when the duty cycle of the duty cycle control signal is too short to avoid the short through phenomenon.

摘要翻译： 当占空比控制信号的占空比太短时，本技术中的同步驱动电路可能导致短路信息素。 本发明在占空比控制信号的占空比太短而避免短路现象时，以合适的周期设定延迟时间。

公开(公告)号：US08487599B2

公开(公告)日：2013-07-16

申请号：US12906137

申请日：2010-10-18

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Ji-Ming Chen

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Ji-Ming Chen

IPC分类号： G05F1/40

CPC分类号： G05F1/10

摘要： A de-glitch switching converting circuit and a controller thereof are provided. In the embodiment of the invention, the circuit can filter noises with high frequency by way of time judgment, so as to avoid the erroneous operation of the controller affecting the stability of the output voltage or the output current. Compared with the method of using low-pass filters with large capacitors to filter noises, highly increasing the cost of the circuit is unnecessary in the embodiment of the invention. The circuit in the embodiment of the invention also has the capability for filtering noises with high amplitudes. In addition, by setting suitable parameters, the circuit in the embodiment of the invention can also avoid affecting the transient response of the circuit while filtering noises.

摘要翻译： 提供去毛刺切换转换电路及其控制器。 在本发明的实施例中，电路可以通过时间判断过滤高频噪声，以避免控制器误操作，影响输出电压或输出电流的稳定性。 与使用具有大电容器的低通滤波器对噪声进行滤波的方法相比，在本发明的实施例中不需要大量增加电路的成本。 本发明实施例中的电路还具有以高幅度对噪声进行滤波的能力。 此外，通过设定适当的参数，本发明的实施例中的电路也可以避免在过滤噪声时影响电路的瞬态响应。

公开(公告)号：US08358084B2

公开(公告)日：2013-01-22

申请号：US12826699

申请日：2010-06-30

申请人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Hai-Po Li

发明人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Hai-Po Li

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36

CPC分类号： H05B33/0887 ,  H05B33/0827 ,  H05B33/0866 ,  Y02B20/341

摘要： An LED current control circuit including a current adjusting unit, a detecting unit, and a current control unit is provided. The current adjusting unit has a current control end coupled to an LED string for determining an amount of current flowing through the LED string according to a current control signal. The detecting unit detects the current control end and determines whether to generate a protecting signal according to a protecting voltage value. The current control unit generates the current control signal to control the amount of current flowing through the LED string of and determines whether to stop the current flowing through the LED string according to the protecting signal.

摘要翻译： 提供了包括电流调节单元，检测单元和电流控制单元的LED电流控制电路。 电流调节单元具有耦合到LED串的电流控制端，用于根据电流控制信号确定流过LED串的电流量。 检测单元检测电流控制端，并根据保护电压值确定是否产生保护信号。 电流控制单元产生电流控制信号以控制流过LED串的电流量，并根据保护信号确定是否停止流经LED串的电流。

公开(公告)号：US20120319754A1

公开(公告)日：2012-12-20

申请号：US13244636

申请日：2011-09-25

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Si-Min Wu

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Si-Min Wu

IPC分类号： H03K3/356

CPC分类号： H02M1/38 ,  H02M3/156

摘要： A synchronous driving circuit in the arts may cause a short through pheromone when a duty cycle of a duty cycle control signal is too short. The present invention sets a delay time with a suitable period when the duty cycle of the duty cycle control signal is too short to avoid the short through phenomenon.

摘要翻译： 当占空比控制信号的占空比太短时，本技术中的同步驱动电路可能引起短路信息素。 本发明在占空比控制信号的占空比太短而避免短路现象时，以合适的周期设定延迟时间。

公开(公告)号：US08299755B2

公开(公告)日：2012-10-30

申请号：US12484259

申请日：2009-06-15

申请人： Shian-Sung Shiu ,  Chung-Che Yu ,  Li-Min Lee

发明人： Shian-Sung Shiu ,  Chung-Che Yu ,  Li-Min Lee

IPC分类号： H02J7/00

CPC分类号： H02J7/0018

摘要： A battery charging controlling apparatus for balancing voltages of the charged batteries is provided. The battery charging controlling includes a battery reference voltage generating unit, a voltage balancing unit, and a balance judging unit. The battery charging controlling apparatus determines whether a battery voltage difference between any two adjacent battery units of a battery module is too large or not by using a reference voltage provided from the battery reference voltage generating unit. The battery charging controlling apparatus further detects the voltage of the battery module and a charging current thereto to determine a suitable time for balancing the charged batteries. Then, the voltage balancing unit controlled by the balance judging unit allows the charging current of the lower-voltage battery unit greater than the charging current of the higher-voltage battery, unit so as to lower the battery voltage difference of the battery units.

摘要翻译： 提供一种用于平衡已充电电池的电压的电池充电控制装置。 电池充电控制包括电池参考电压产生单元，电压平衡单元和平衡判断单元。 电池充电控制装置通过使用从电池参考电压产生单元提供的参考电压来确定电池模块的任何两个相邻电池单元之间的电池电压差是否过大。 电池充电控制装置还检测电池模块的电压和充电电流，以确定用于平衡充电电池的合适时间。 然后，由平衡判定单元控制的电压平衡单元使得低电压电池单元的充电电流大于高电压电池单元的充电电流，以降低电池单元的电池电压差。

公开(公告)号：US08288993B2

公开(公告)日：2012-10-16

申请号：US12453284

申请日：2009-05-06

申请人： Shian-Sung Shiu ,  Chung-Che Yu ,  Li-Min Lee

发明人： Shian-Sung Shiu ,  Chung-Che Yu ,  Li-Min Lee

IPC分类号： H02J7/00

CPC分类号： H02J7/0016

摘要： The present invention discloses a battery charging controller for balancing the charged batteries. The battery charging controller comprises a battery reference voltage generator, a voltage balancing module and a balance judging circuit. The battery charging controller determines which one has the lower voltage between battery units of a battery module according to reference voltages generated by the battery reference voltage generator. The voltage balancing module controlled by the balance judging circuit allows the charging current of the lower-voltage battery larger than the charging current of the higher-voltage battery in such that the final voltages of the battery units are substantially equaled when they are completely saturated.

摘要翻译： 本发明公开了一种用于平衡充电的电池的电池充电控制器。 电池充电控制器包括电池参考电压发生器，电压平衡模块和平衡判定电路。 电池充电控制器根据由电池参考电压发生器产生的参考电压来确定哪个电池在电池模块的电池单元之间具有较低的电压。 由平衡判断电路控制的电压平衡模块允许低电压电池的充电电流大于高电压电池的充电电流，使得当电池单元完全饱和时，电池单元的最终电压基本相等。