公开(公告)号：US09000624B2

公开(公告)日：2015-04-07

申请号：US13470363

申请日：2012-05-14

Applicant: Li-Min Lee ,  Zhong-Wei Liu ,  Chung-Che Yu ,  Shian-Sung Shiu

Inventor： Li-Min Lee ,  Zhong-Wei Liu ,  Chung-Che Yu ,  Shian-Sung Shiu

IPC: H01H7/00 ,  H02J4/00

CPC classification number: H02J4/00 ,  Y10T307/702 ,  Y10T307/951

Abstract: A power-good signal generator generates a power-good signal according to a control signal of a controller, and comprises an impedance element, a controlled transistor and a power sequencing free circuit. An end of the impedance element is coupled to a second voltage source. The controlled transistor has first and second input/output ends and a controlled end, wherein the first input/output end is coupled to the other end of the impedance element to generate the power-good signal. An operating state of the controlled transistor is changed in response to the control signal. The power sequencing free circuit is coupled to the controlled end and one of the first input/output end and the second voltage source. When the second voltage source is supplied before the first voltage source, the power sequencing free circuit turns on the controlled transistor to clamp the power-good signal to be lower than a predetermined voltage level.

Abstract translation: 功率良好信号发生器根据控制器的控制信号产生功率良好信号，并且包括阻抗元件，受控晶体管和电力排序自由电路。 阻抗元件的端部耦合到第二电压源。 受控晶体管具有第一和第二输入/输出端和受控端，其中第一输入/输出端耦合到阻抗元件的另一端以产生功率良好信号。 控制晶体管的工作状态响应于控制信号而改变。 电源排序自由电路耦合到受控端和第一输入/输出端和第二电压源中的一个。 当在第一电压源之前提供第二电压源时，电力排序自由电路导通受控晶体管，以将功率良好信号钳位到低于预定电压电平。

公开(公告)号：US08664884B2

公开(公告)日：2014-03-04

申请号：US13241299

申请日：2011-09-23

Applicant: Hai-Po Li ,  Shian-Sung Shiu ,  Li-Min Lee

Inventor： Hai-Po Li ,  Shian-Sung Shiu ,  Li-Min Lee

IPC: G05F1/00

CPC classification number: H05B33/0815 ,  H05B33/0818 ,  H05B33/0827 ,  H05B33/0845 ,  Y02B20/346

Abstract: An LED (Light-Emitting Diode) driving circuit to drive an LED module is provided. The LED driving circuit includes a converting circuit and a feedback control circuit. The converting circuit is coupled to the LED module, and converts an input voltage into an output voltage according to at least one control signal. The feedback control circuit generates the control signal to control the converting circuit to perform voltage conversion according to a feedback signal. In addition, the feedback control circuit receives a dimming signal, and is operated in a first state or a second state in response to the dimming signal, wherein the feedback control circuit adjusts the duty cycle of the control signal to have the duty cycle larger than or equal to a predetermined duty cycle in a predetermined period right after the feedback control circuit is operated from the second state to the first state.

Abstract translation: 提供了用于驱动LED模块的LED（发光二极管）驱动电路。 LED驱动电路包括转换电路和反馈控制电路。 转换电路耦合到LED模块，并根据至少一个控制信号将输入电压转换成输出电压。 反馈控制电路产生控制信号以根据反馈信号控制转换电路进行电压转换。 此外，反馈控制电路接收调光信号，并响应于调光信号而在第一状态或第二状态下操作，其中反馈控制电路调节控制信号的占空比以使占空比大于 或等于在反馈控制电路从第二状态操作到第一状态之后的预定周期内的预定占空比。

公开(公告)号：US08618748B2

公开(公告)日：2013-12-31

申请号：US13192466

申请日：2011-07-28

Applicant: Shian-Sung Shiu ,  Chung-Che Yu ,  Li-Min Lee ,  Ke Peng

Inventor： Shian-Sung Shiu ,  Chung-Che Yu ,  Li-Min Lee ,  Ke Peng

IPC: H05B37/02 ,  G05F1/00

CPC classification number: H05B33/0815 ,  H05B33/0824 ,  Y02B20/341

Abstract: A power converting controller and an LED driving circuit are provided. The power converting controller controls a converting circuit, which converts an input power source into an appropriate power source to drive a load. The power converting controller includes a feedback control unit, an open-circuit judging unit and a protection unit. The feedback control unit controls the converting circuit according to a feedback signal representing the status of the load. As the open-circuit judging unit has judged that the load is continuously in an open-circuit status for a predetermined time length, the open-circuit judging unit generates an open-circuit protection signal. The protection unit is coupled to the feedback control unit and the open-circuit judging unit so as to generate a protection signal as receiving the open-circuit protection signal and thereby the feedback control unit enters a latch status to stop controlling the converting circuit.

Abstract translation: 提供电力转换控制器和LED驱动电路。 电力转换控制器控制转换电路，其将输入电源转换成适当的电源以驱动负载。 电力转换控制器包括反馈控制单元，开路判断单元和保护单元。 反馈控制单元根据表示负载状态的反馈信号控制转换电路。 由于开路判断部判断负载连续处于规定时间长度的开路状态，所以开路判断部生成开路保护信号。 保护单元耦合到反馈控制单元和开路判断单元，以便产生保护信号作为接收开路保护信号，由此反馈控制单元进入锁存状态以停止控制转换电路。

公开(公告)号：US08536804B2

公开(公告)日：2013-09-17

申请号：US13304271

申请日：2011-11-23

Applicant: Chung-Che Yu ,  Shian-Sung Shiu ,  Li-Min Lee ,  Juan-Juan Liu

Inventor： Chung-Che Yu ,  Shian-Sung Shiu ,  Li-Min Lee ,  Juan-Juan Liu

IPC: H05B37/02 ,  G05F1/46

CPC classification number: H02M3/156 ,  H02M2001/0025 ,  H05B33/0815

Abstract: A converting controller is provided and comprises a first comparing unit, a second comparing unit, a duty cycle operating unit and a reference voltage supplying unit. The first comparing unit receives a detecting signal representing a state of the load and a first reference signal, and generates a first comparing signal accordingly. The duty cycle operating unit controls power conversion of the converting circuit according to the first comparing signal. The second comparing unit receives the detecting signal and a second reference signal, and generates a second comparing signal accordingly. The reference voltage supplying unit supplies the first reference signal and adjusts a level of the first reference signal in response to the second comparing signal.

Abstract translation: 提供转换控制器，包括第一比较单元，第二比较单元，占空比操作单元和参考电压提供单元。 第一比较单元接收表示负载状态的检测信号和第一参考信号，并相应地产生第一比较信号。 占空比操作单元根据第一比较信号控制转换电路的功率转换。 第二比较单元接收检测信号和第二参考信号，并相应地产生第二比较信号。 参考电压提供单元响应于第二比较信号提供第一参考信号并调节第一参考信号的电平。

公开(公告)号：US08502461B2

公开(公告)日：2013-08-06

申请号：US13115129

申请日：2011-05-25

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

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

IPC: H05B37/02 ,  G05F1/00

CPC classification number: H05B33/0848 ,  H05B33/0815

Abstract: A driving circuit, comprising a power supply, a transistor unit and a feedback control circuit, is disclosed. The power supply is adaptor to provide an electric power to drive a load. The transistor unit comprises at least one load coupling end to couple to the load for adjusting an amount of current flowing through the load. The feedback control circuit controls an amount of the electric power provided by the power supply according to a voltage level of the least one load coupling end. Wherein, the feedback control circuit comprises an error amplifying circuit and a feedback control switch. The error amplifying circuit generates an error amplified signal according to the voltage level of the least one load coupling end, and the feedback control switch is coupled to an output of the error amplifying circuit and is switched between a turn-on state and a turn-off state based on a dimming signal.

Abstract translation: 公开了一种包括电源，晶体管单元和反馈控制电路的驱动电路。 电源是适配器，用于提供驱动负载的电力。 晶体管单元包括至少一个耦合到负载的负载耦合端，用于调节流过负载的电流量。 反馈控制电路根据至少一个负载耦合端的电压电平来控制由电源提供的电力的量。 其中，反馈控制电路包括误差放大电路和反馈控制开关。 误差放大电路根据至少一个负载耦合端的电压电平产生误差放大信号，反馈控制开关耦合到误差放大电路的输出，并在导通状态和转向开关状态之间切换， 基于调光信号的关闭状态。

公开(公告)号：US08492993B2

公开(公告)日：2013-07-23

申请号：US12906145

申请日：2010-10-18

Applicant: Shian-Sung Shiu ,  Chen-Hsung Wang ,  Chung-Che Yu

Inventor： Shian-Sung Shiu ,  Chen-Hsung Wang ,  Chung-Che Yu

IPC: G05F1/00 ,  H05B37/02

CPC classification number: H05B33/089

Abstract: A power converting circuit having the function of circuit detecting is provided. The power converting circuit has a transistor, a controller and a detecting circuit. The transistor receives an input voltage. The controller is coupled to a control end of the transistor to control the conducting state of the transistor so as to stabilize the output of the power converting circuit. The detecting circuit detects at least one of the control end and the low voltage end of the transistor, and generates a state signal when the detected voltage of any one of the control end and the low voltage end does not fall within a corresponding predetermined voltage range. The state signal is utilized for stopping a power circuit which provides the input voltage providing the input voltage. In addition, a light emitting diode driving circuit having the function of circuit detecting is also provided.

Abstract translation: 提供具有电路检测功能的电力转换电路。 功率转换电路具有晶体管，控制器和检测电路。 晶体管接收输入电压。 控制器耦合到晶体管的控制端，以控制晶体管的导通状态，以稳定功率转换电路的输出。 检测电路检测晶体管的控制端和低压端中的至少一个，并且当控制端和低电压端中的任何一个的检测电压不在相应的预定电压范围内时，产生状态信号 。 状态信号用于停止提供输入电压的输入电压的电源电路。 此外，还提供了具有电路检测功能的发光二极管驱动电路。

公开(公告)号：US08461769B2

公开(公告)日：2013-06-11

申请号：US12494832

申请日：2009-06-30

Applicant: Shian-Sung Shiu ,  Chung-Che Yu ,  JuanJuan Liu

Inventor： Shian-Sung Shiu ,  Chung-Che Yu ,  JuanJuan Liu

IPC: H05B39/04

CPC classification number: H05B33/0845

Abstract: An LED driving circuit is used for dimming by switching between an operating current and a maintaining current or by voltage clamping of a source/drain of MOSFET that is coupled to the LED module. When the LED module is dimmed off, the voltage across the LED module can be kept at a value around a lighting threshold voltage of the LED module that is a minimum voltage for lighting the LED module. Therefore, a voltage difference between the drain and the source of MOSFET coupled to the LED module is smaller than that in the conventional arts. Hence, a withstand voltage of MOSFET can be reduced, and cost of the LED driving circuit as well as the power consumption of MOSFET can be lessened, thereby improving integral efficiency of the circuit.

Abstract translation: LED驱动电路用于通过在工作电流和维持电流之间进行调光，或通过耦合到LED模块的MOSFET的源极/漏极的电压钳位来进行调光。 当LED模块变暗时，LED模块上的电压可以保持在LED模块的照明阈值电压附近的值，LED模块的亮度阈值电压是用于点亮LED模块的最小电压。 因此，耦合到LED模块的MOSFET的漏极和源极之间的电压差小于常规技术中的电压差。 因此，可以降低MOSFET的耐压，并且可以降低LED驱动电路的成本以及MOSFET的功耗，从而提高电路的积分效率。

公开(公告)号：US08368433B2

公开(公告)日：2013-02-05

申请号：US13092142

申请日：2011-04-21

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

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

IPC: H03K3/01

CPC classification number: H02H7/122

Abstract: The present invention discloses a transistor driving module, coupling to a converting controller, to driving a high side transistor and a low side transistor connected in series, wherein one end of the high side transistor is coupled to an input voltage and one end of the low side transistor is grounded. The transistor driving module comprises a high side driving unit, a low side driving unit, a current limiting unit and an anti-short through unit. The high side driving unit generates a high side driving signal to turn the high side transistor on according to a duty cycle signal, and the low side driving unit generates a low side driving signal turn the low side transistor on according to the high side driving signal. The current limiting unit is coupled to the high side transistor and the high side driving unit, and generates a current limiting signal when a current flowing through the high side transistor higher than a current limiting value. The high side driving unit is stopped to generate the high side driving signal when receiving the current limiting value. The anti-short through unit is coupled to the high side driving unit and the low side driving unit to control the generations of the high side driving signal and the low side driving signal to have the timings of the high side driving signal and the low side driving signal non-overlapped.

Abstract translation: 本发明公开了一种与转换控制器耦合以驱动串联连接的高侧晶体管和低侧晶体管的晶体管驱动模块，其中高侧晶体管的一端耦合到输入电压，低端的一端 侧晶体管接地。 晶体管驱动模块包括高侧驱动单元，低侧驱动单元，限流单元和防短路单元。 高侧驱动单元产生高侧驱动信号，以根据占空比信号使高侧晶体管导通，低边驱动单元产生低侧驱动信号，根据高侧驱动信号使低侧晶体管导通 。 电流限制单元耦合到高侧晶体管和高侧驱动单元，并且当流过高侧晶体管的电流高于电流限制值时，产生限流信号。 当接收到电流限制值时，高侧驱动单元被停止以产生高侧驱动信号。 防短路单元耦合到高侧驱动单元和低侧驱动单元，以控制高侧驱动信号和低侧驱动信号的代，以具有高侧驱动信号和低侧的定时 驾驶信号不重叠。

公开(公告)号：US08324834B2

公开(公告)日：2012-12-04

申请号：US12902290

申请日：2010-10-12

Applicant: Chen-Hsung Wang ,  Chung-Che Yu ,  Li-Min Lee ,  Shian-Sung Shiu

Inventor： Chen-Hsung Wang ,  Chung-Che Yu ,  Li-Min Lee ,  Shian-Sung Shiu

IPC: H05B37/02 ,  H05B37/00

CPC classification number: H05B33/0827

Abstract: A load driving circuit and a multi-load feedback circuit is disclosed. The load driving circuit and the multi-load feedback circuit are adapted to drive a LED module that has a current balancing circuit for balancing the currents flowing through LEDs. The load driving circuit and the multi-load feedback circuit modules the electric power transmitted by the LED driving apparatus to a LED module according to voltage level(s) of current balancing terminals having insufficient voltage in the current balancing circuit, and so the voltage levels of the current balancing terminals are higher than or equal to a preset voltage level, further increasing the efficiency thereof.

Abstract translation: 公开了一种负载驱动电路和多负载反馈电路。 负载驱动电路和多负载反馈电路适于驱动具有用于平衡流过LED的电流的电流平衡电路的LED模块。 负载驱动电路和多负载反馈电路根据电流平衡电路中具有不足电压的电流平衡端子的电压电平将由LED驱动装置传输的电力模块组合到LED模块，因此电压电平 的电流平衡端子高于或等于预设电压电平，进一步提高其效率。

公开(公告)号：US20120106008A1

公开(公告)日：2012-05-03

申请号：US13192491

申请日：2011-07-28

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

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

IPC: H02H3/20

CPC classification number: H02M3/156 ,  H02M2001/0038

Abstract: A spike suppression circuit for filtering out voltage oscillation produced by an inductive component and a conversion control circuit are disclosed. The spike suppression circuit includes an energy release path and a detection circuit. One end of the energy release path is coupled to a connection terminal of a circuit, and the other end thereof is coupled to a reference voltage. The detection circuit is coupled to the connection terminal. The detection circuit has a high-pass component for turning on the energy release path when the voltage on the connection terminal has a high-frequency signal.

Abstract translation: 公开了一种用于滤除由电感元件和转换控制电路产生的电压振荡的尖峰抑制电路。 尖峰抑制电路包括能量释放路径和检测电路。 能量释放路径的一端耦合到电路的连接端子，并且其另一端耦合到参考电压。 检测电路耦合到连接端子。 当连接端子上的电压具有高频信号时，检测电路具有用于接通能量释放路径的高通分量。