公开(公告)号：US09455622B2

公开(公告)日：2016-09-27

申请号：US14324086

申请日：2014-07-04

Applicant: FSP-Powerland Technology Inc. ,  FSP TECHNOLOGY INC.

Inventor： Chuan-Yun Wang ,  Ming Xu ,  Jian-Guo Mu

IPC: H02M1/32 ,  H02M7/5387 ,  H02M1/00

CPC classification number: H02M1/32 ,  H02M7/5387 ,  H02M2001/0009

Abstract: An inverter and an over current protection method thereof are provided. The inverter includes an inverting circuit, a filtering capacitor and an over current protection circuit. The inverting circuit is configured to convert a DC input voltage into an AC output voltage and provide the AC output voltage to a load. The filtering capacitor is coupled to the inverting circuit and the load in parallel. The over current protection circuit is coupled to the inverting circuit and the filtering capacitor and configured to provide an over current protection mechanism. The over current protection circuit detects an AC current on the filtering capacitor and determines whether to enable the over current protection mechanism according to the AC current in order to restrain the power conversion operation of the inverting circuit.

Abstract translation: 提供了一种逆变器及其过电流保护方法。 逆变器包括反相电路，滤波电容器和过流保护电路。 反相电路被配置为将DC输入电压转换为AC输出电压并将AC输出电压提供给负载。 滤波电容器并联耦合到反相电路和负载。 过电流保护电路耦合到反相电路和滤波电容器，并配置成提供过流保护机构。 过流保护电路检测滤波电容器上的交流电流，并根据交流电流确定是否使能过电流保护机构，以抑制反相电路的电力转换操作。

公开(公告)号：US09287803B2

公开(公告)日：2016-03-15

申请号：US14472395

申请日：2014-08-29

Applicant: FSP-Powerland Technology Inc. ,  FSP TECHNOLOGY INC.

Inventor： Jian-Guo Mu ,  Chuan-Yun Wang ,  Ming Xu

IPC: H02M7/5387 ,  H02M3/335 ,  H02M7/48 ,  H02M3/337 ,  H02M1/00

CPC classification number: H02M7/53871 ,  H02M3/3376 ,  H02M7/4826 ,  H02M2001/0058 ,  H02M2001/007 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491

Abstract: An inverter and a direct current (DC) bus voltage regulating method thereof are provided. The inverter includes a resonant conversion circuit, an inverting circuit, a first control circuit and a second control circuit. The resonant conversion circuit receives a DC input voltage and converts the same into a DC bus voltage. The inverting circuit couples to the resonant conversion circuit, and configured to convert the DC bus voltage into an AC output voltage. The first control circuit is configured to control operations of the resonant conversion circuit, where the first control circuit calculates a best working voltage of the resonant conversion circuit based on the DC input voltage and a resonant frequency of the resonant conversion circuit. The second control circuit controls operations of the inverting circuit, where the second control circuit receives the best working voltage calculated by the first control circuit and regulates the DC bus voltage accordingly.

Abstract translation: 提供了一种逆变器及其直流（DC）母线电压调节方法。 逆变器包括谐振转换电路，反相电路，第一控制电路和第二控制电路。 谐振转换电路接收直流输入电压并将其转换为直流母线电压。 反相电路耦合到谐振转换电路，并被配置为将DC总线电压转换成AC输出电压。 第一控制电路被配置为控制谐振转换电路的操作，其中第一控制电路基于DC输入电压和谐振转换电路的谐振频率来计算谐振转换电路的最佳工作电压。 第二控制电路控制反相电路的操作，其中第二控制电路接收由第一控制电路计算的最佳工作电压，并相应地调节DC总线电压。

公开(公告)号：US09197203B2

公开(公告)日：2015-11-24

申请号：US12603119

申请日：2009-10-21

Applicant: Kuo-Fan Lin

Inventor： Kuo-Fan Lin

IPC: H03K3/017 ,  H03K7/08 ,  H02M3/156 ,  H02M3/335 ,  H02M1/00

CPC classification number: H03K7/08 ,  H02M3/156 ,  H02M3/33507 ,  H02M2001/0016

Abstract: A cycle modulation circuit for limiting voltage peak value of a power supply employed an active clamp. The power supply receives an input power which is modulated through a power driving unit to become a driving power transformed through a transformer to be output. The cycle modulation circuit includes a comparison unit and a linear voltage generation unit. The comparison unit receives the input power to generate a level signal which is used as a base value to compare level with an oscillation signal generated by the linear voltage generation unit, thereby to modulate and output a pulse width limit signal with a composite cycle consisting of a high level and a low level. The pulse width limit signal is input to the power driving unit to limit the peak value of the driving power modulated by the power driving unit.

Abstract translation: 一种用于限制使用有源钳位电源的电压峰值的循环调制电路。 电源接收通过电力驱动单元调制的输入功率，成为通过变压器变换的驱动功率输出。 循环调制电路包括比较单元和线性电压产生单元。 比较单元接收输入功率以产生用作基准值的电平信号，以将电平与线性电压产生单元产生的振荡信号进行比较，从而调制和输出具有复合周期的脉冲宽度限制信号，复合周期由 高水平和低水平。 脉冲宽度限制信号被输入到电力驱动单元，以限制由电力驱动单元调制的驱动功率的峰值。

公开(公告)号：US09155137B2

公开(公告)日：2015-10-06

申请号：US13831874

申请日：2013-03-15

Applicant: FSP TECHNOLOGY INC.

Inventor： Cheng-Hui Yang ,  Ching-Chia Chu

IPC: H05B33/08

CPC classification number: H05B33/0809 ,  H05B33/0815 ,  H05B33/089 ,  Y02B20/347

Abstract: A load driving apparatus related to an LED lamp and a method thereof are provided. The load driving apparatus includes a PWM-based power converter and a determination circuit. The PWM-based power converter is coupled to the LED lamp, and is configured to: generate a DC operation voltage of the LED lamp; and control a current flowing through the LED lamp in response to a dimming signal, so as to adjust a brightness of the LED lamp. The determination circuit is coupled to the PWM-based power converter and the LED lamp, and is configured to: receive the DC operation voltage; and stop conducting the DC operation voltage to the LED lamp in case that a lamp-off condition of the LED lamp is satisfied.

Abstract translation: 提供了与LED灯有关的负载驱动装置及其方法。 负载驱动装置包括基于PWM的功率转换器和确定电路。 基于PWM的功率转换器耦合到LED灯，并被配置为：产生LED灯的直流工作电压; 并响应于调光信号控制流过LED灯的电流，以调节LED灯的亮度。 确定电路耦合到基于PWM的功率转换器和LED灯，并且被配置为：接收DC操作电压; 在满足LED灯的熄灯状态的情况下，停止对LED灯的直流动作电压。

公开(公告)号：US09124168B2

公开(公告)日：2015-09-01

申请号：US12982911

申请日：2010-12-31

Applicant: Ju-Lu Sun ,  Jing-Peng Zhu ,  Ming Xu

Inventor： Ju-Lu Sun ,  Jing-Peng Zhu ,  Ming Xu

IPC: H02M3/335 ,  H02M5/08 ,  H02M5/00

CPC classification number: H02M5/08 ,  H02M5/00

Abstract: A method and apparatus used for electric isolation transmission are provided. The method includes: providing an isolation transmission circuit having at least one capacitor; and implementing electric isolation between the primary side and secondary side, and suppressing leakage currents generated between the primary side and secondary side and transmitting power. The apparatus includes the isolation transmission circuit that is manufactured by capacitor(s). The apparatus can be applied to light-weight power sources providing AC/DC outputs with high efficiency, adapters, or related products. In addition, the apparatus has a reduced size and higher power transmission efficiency.

Abstract translation: 提供了用于电隔离传输的方法和装置。 该方法包括：提供具有至少一个电容器的隔离传输电路; 并实现初级侧和次级侧之间的电隔离，并且抑制在初级侧和次级侧之间产生的泄漏电流并发射功率。 该装置包括由电容器制造的隔离传输电路。 该装置可以应用于提供具有高效率，适配器或相关产品的AC / DC输出的轻量级电源。 此外，该装置具有减小的尺寸和更高的功率传输效率。

公开(公告)号：US09070504B2

公开(公告)日：2015-06-30

申请号：US13629624

申请日：2012-09-28

Applicant: Chih-Shien Liu

Inventor： Chih-Shien Liu

IPC: H01F27/29 ,  H01F27/28 ,  H01F27/30 ,  H01F30/12 ,  H01F27/32

CPC classification number: H01F27/29 ,  H01F27/325 ,  Y10T29/4902

Abstract: A transformer and a fabricating method for transformer. The transformer includes a stand, two primary-sides, a secondary-side and multiple pins. The stand has a top-portion, a bottom-portion and a middle-portion connecting the top-portion and the bottom-portion. The primary-sides are disposed on the middle-portion and the secondary-side is disposed on the middle-portion between and insulated from the two primary-sides. The pins are plugged under the bottom-portion and electrically connected to the primary-sides and the secondary-side, wherein each of the primary-sides and secondary-side has multiple thread-ends respectively connecting one pin. The bottom-portion has multiple slots corresponding to the pins. The slot length is greater than a safety-standard distance, no insulating sleeve is disposed on the thread-ends, and the thread-ends are electrically connected to the pins along the slots so that a distance between the electrical connection joint and the primary-sides or the secondary-side on the middle-portion is greater than the safety-standard distance.

Abstract translation: 变压器和变压器的制造方法。 变压器包括一个支架，两个主侧，二次侧和多个销。 支架具有连接顶部和底部的顶部，底部和中间部分。 初级侧设置在中间部分上，次级侧设置在两个主要侧面之间的中间部分上并与之隔绝。 这些销被插入到底部底部并且电连接到初级侧和次级侧，其中初级侧和次级侧中的每一个具有分别连接一个销的多个螺纹端。 底部具有与销相对应的多个槽。 槽长度大于安全标准距离，螺纹端没有设置绝缘套管，并且螺纹端部沿着槽口与销钉电连接，使得电连接接头和主要连接接头之间的距离， 侧面或中间部分的次级侧大于安全标准距离。

公开(公告)号：US08941962B2

公开(公告)日：2015-01-27

申请号：US13610884

申请日：2012-09-12

Applicant: Kuo-Fan Lin

Inventor： Kuo-Fan Lin

IPC: H02H3/20 ,  H02H9/04 ,  H01L23/495 ,  H01L23/498 ,  H01L21/56 ,  H01L23/62 ,  H01L25/16 ,  H01L23/00 ,  H01L23/31

CPC classification number: H01L23/4952 ,  H01L21/56 ,  H01L23/3107 ,  H01L23/49562 ,  H01L23/498 ,  H01L23/62 ,  H01L24/06 ,  H01L24/13 ,  H01L24/14 ,  H01L24/16 ,  H01L24/29 ,  H01L24/32 ,  H01L24/45 ,  H01L24/48 ,  H01L24/49 ,  H01L24/73 ,  H01L25/16 ,  H01L2224/0401 ,  H01L2224/0603 ,  H01L2224/13111 ,  H01L2224/1403 ,  H01L2224/14051 ,  H01L2224/16106 ,  H01L2224/16245 ,  H01L2224/29339 ,  H01L2224/32013 ,  H01L2224/32245 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/4813 ,  H01L2224/48247 ,  H01L2224/49107 ,  H01L2224/49113 ,  H01L2224/73265 ,  H01L2924/12035 ,  H01L2924/1301 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/1306 ,  H01L2924/13091 ,  H01L2924/181 ,  H01L2924/3011 ,  H01L2924/00014 ,  H01L2924/00012 ,  H01L2924/00

Abstract: A snubber circuit includes: at least one impedance component, a capacitor, and a Bipolar Junction Transistor (BJT). The snubber circuit is utilized for protecting electric/electronic components, reducing high frequency interference and spike voltage, and enhancing efficiency. In particular, the at least one impedance component in the snubber circuit can be at least one zener diode, where regarding protecting electric/electronic components, reducing high frequency interference and spike voltage, and enhancing efficiency, the performance of the snubber circuit in a situation where the zener diode is utilized is better than that of the snubber circuit in a situation where other types of impedance components are utilized. An associated method of using a BJT in a snubber circuit is also provided.

Abstract translation: 缓冲电路包括：至少一个阻抗分量，电容器和双极结晶体管（BJT）。 缓冲电路用于保护电气/电子部件，降低高频干扰和尖峰电压，提高效率。 特别地，缓冲电路中的至少一个阻抗分量可以是至少一个齐纳二极管，其中关于保护电子/电子部件，降低高频干扰和尖峰电压，并提高效率，在一种情况下缓冲电路的性能 在使用其它类型的阻抗分量的情况下，使用齐纳二极管的电压优于缓冲电路。 还提供了在缓冲电路中使用BJT的相关方法。

公开(公告)号：US08836228B2

公开(公告)日：2014-09-16

申请号：US13468017

申请日：2012-05-09

Applicant: Ming Xu ,  Xinlei Li

Inventor： Ming Xu ,  Xinlei Li

IPC: H05B37/02 ,  H02M3/158 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M3/33569 ,  H02M2001/0058 ,  Y02B70/1425 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A non-isolated resonant converter is provided. The provided non-isolated resonant converter includes a switch circuit, a resonant circuit and a rectifying-filtering circuit. The switch circuit, the resonant circuit and the rectifying-filtering circuit are sequentially connected. The resonant circuit includes an auto-transformer, a capacitor and an inductor, wherein the capacitor and the inductor are connected to the auto-transformer. The configuration of the provided non-isolated resonant converter has small size, low loss and high power density.

Abstract translation: 提供非隔离谐振变换器。 提供的非隔离谐振转换器包括开关电路，谐振电路和整流滤波电路。 开关电路，谐振电路和整流滤波电路依次连接。 谐振电路包括自耦变压器，电容器和电感器，其中电容器和电感器连接到自耦变压器。 所提供的非隔离谐振转换器的配置具有体积小，损耗低，功率密度高的特点。

公开(公告)号：US08610660B2

公开(公告)日：2013-12-17

申请号：US13183467

申请日：2011-07-15

Applicant: Ming Xu ,  Shaobin Zhang

Inventor： Ming Xu ,  Shaobin Zhang

IPC: G09G3/36 ,  H05B37/02

CPC classification number: G09G3/3406 ,  G09G2330/024 ,  H05B33/0827

Abstract: An LED backlight driving circuit including a boost circuit and a transformer current balance circuit is provided. The boost circuit provides a total current for n LED strings, and the transformer current balance circuit is coupled to the LED strings and includes n−1 transformers. A first LED current-balance-circuit (CBC) includes a switching-transistor connected to a secondary-winding of a first-transformer, and an nth LED CBC includes a switching-transistor connected to a primary-winding of an (n−1)th transformer. An ith (1 2) LED CBC includes a switching-transistor sequentially connected to a primary-winding of an (i−1)th transformer and a secondary-winding of an ith transformer. The passive-transformers are applied in the LED driving circuit to implement current balance/equalization, such that the LED backlight driving circuit is suitable for a system with any odd or even number (greater than 1) of the LED strings connected in parallel, so as to reduce the cost of the system.

Abstract translation: 提供了包括升压电路和变压器电流平衡电路的LED背光驱动电路。 升压电路提供n个LED串的总电流，并且变压器电流平衡电路耦合到LED串并且包括n-1个变压器。 第一LED电流平衡电路（CBC）包括连接到第一变压器的次级绕组的开关晶体管，并且第n个LED CBC包括连接到第（n-1）的初级绕组的开关晶体管 ）变压器。 第一（1 2）LED CBC包括依次连接到第（i-1）变压器的初级绕组和第i变​​压器的次级绕组的开关晶体管。 无源变压器应用在LED驱动电路中以实现电流平衡/均衡，使得LED背光驱动电路适用于并联连接的LED串的奇数或偶数（大于1）的系统，因此 以降低系统的成本。