公开(公告)号：US08866460B2

公开(公告)日：2014-10-21

申请号：US13608091

申请日：2012-09-10

Applicant: Tsung-Wei Huang ,  Shui-Mu Lin

Inventor： Tsung-Wei Huang ,  Shui-Mu Lin

IPC: G05F1/00 ,  G05F1/46 ,  H02M3/158 ,  H02M1/00

CPC classification number: G05F1/46 ,  H02M3/158 ,  H02M2001/0045

Abstract: A power supply uses a power converter to generate a regulated voltage by referencing to a first DC voltage, a low dropout (LDO) regulator to generate an output voltage from the regulated voltage by referencing to a second DC voltage, and a reference voltage generator to dynamically adjust the first DC voltage according to the input voltage and the control voltage of the output transistor of the LDO regulator. The dropout voltage of the LDO regulator can be minimized to maintain the high efficiency of the power supply at different loading or selected output voltages.

Abstract translation: 电源使用功率转换器，通过参考第一直流电压，低压差（LDO）调节器来产生调节电压，以通过参考第二直流电压从调节电压产生输出电压，以及参考电压发生器 根据输入电压和LDO稳压器的输出晶体管的控制电压动态调整第一个直流电压。 LDO调节器的压差电压可以最小化，以在不同负载或选定的输出电压下保持电源的高效率。

公开(公告)号：US08847500B2

公开(公告)日：2014-09-30

申请号：US12955094

申请日：2010-11-29

Applicant: Shui-Mu Lin ,  Chueh-Kuei Jan ,  Shei-Chie Yang ,  Huan-Chien Yang

Inventor： Shui-Mu Lin ,  Chueh-Kuei Jan ,  Shei-Chie Yang ,  Huan-Chien Yang

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0818 ,  H05B33/0824 ,  Y02B20/347

Abstract: An LED driver includes a power converter to convert an input voltage to a regulated voltage, a current source to be connected with an LED string in series between the power converter and a bias node, and a switching circuit to apply a bias voltage to the bias node to set the total voltage drop of the LED string and the current source. By controlling the total voltage drop of the LED string and the current source, the LED driver will automatically select a boost mode or a buck mode for operation, thereby improving the efficiency thereof.

Abstract translation: LED驱动器包括将输入电压转换为调节电压的电力转换器，与功率转换器和偏置节点之间串联的LED串连接的电流源以及向偏置施加偏置电压的开关电路 节点设置LED串和电流源的总压降。 通过控制LED串和电流源的总电压降，LED驱动器将自动选择升压模式或降压模式进行操作，从而提高其效率。

公开(公告)号：US20140132165A1

公开(公告)日：2014-05-15

申请号：US14069772

申请日：2013-11-01

Applicant: Shui-Mu Lin ,  Ching-Yu Chen ,  Chien-Hua Lin ,  Ti-Ti Liu ,  Kuan-Cheng Lai

Inventor： Shui-Mu Lin ,  Ching-Yu Chen ,  Chien-Hua Lin ,  Ti-Ti Liu ,  Kuan-Cheng Lai

IPC: H05B33/08

CPC classification number: H05B33/0824

Abstract: The present invention discloses a light emitting device array billboard and a row switch circuit and a control method thereof. The light emitting device array billboard includes a light emitting device array circuit, plural row switch circuits, plural column driver circuits, and a control circuit. The light emitting device array circuit includes plural light emitting devices arranged by columns and rows. Each row switch circuit determines whether to electrically connect a row conduction voltage to the corresponding row node or to discharge charges at the corresponding row node through a discharging path according to a row selection signal. Each column driver circuit determines whether or not to electrically connect a column conduction voltage to the corresponding column node according to a column selection signal. The control circuit provides the row selection signal and the column selection signal to the row switch circuits and the column driver circuits.

Abstract translation: 本发明公开了一种发光装置阵列广告牌和行开关电路及其控制方法。 发光装置阵列广告牌包括发光装置阵列电路，多行开关电路，多列驱动电路和控制电路。 发光器件阵列电路包括由列和行排列的多个发光器件。 每行开关电路确定是否将行导通电压电连接到对应的行节点，或者通过根据行选择信号的放电路径来放电对应行节点处的电荷。 列列驱动器电路根据列选择信号来确定是否将列导通电压电连接到对应的列节点。 控制电路将行选择信号和列选择信号提供给行开关电路和列驱动电路。

公开(公告)号：US08436544B2

公开(公告)日：2013-05-07

申请号：US12927281

申请日：2010-11-10

Applicant: Shei-Chie Yang ,  Shui-Mu Lin ,  Chuan-Yo Hsiao ,  Huan-Chien Yang

Inventor： Shei-Chie Yang ,  Shui-Mu Lin ,  Chuan-Yo Hsiao ,  Huan-Chien Yang

IPC: H05B41/16

CPC classification number: H05B33/0842 ,  H05B33/0818 ,  Y02B20/346

Abstract: The present invention discloses an LED controller with de-flicker function and an LED de-flicker circuit and method thereof. The LED controller includes: a duty ratio calculation circuit for receiving a pulse width modulation (PWM) signal and generating a duty input signal, indicating a digital duty ratio of the PWM signal; an LED de-flicker circuit for receiving the duty input signal and generating a duty output signal wherein a noise in the duty input signal is filtered; and a dimming circuit for receiving the duty output signal and generating a dimming signal to control an LED circuit; wherein the duty output signal remains unchanged when the variation of the duty input signal is not larger than a hysteresis threshold, and the duty output signal follows the duty input signal when the variation of the duty input signal is larger than the hysteresis threshold.

Abstract translation: 本发明公开了一种具有去闪烁功能的LED控制器和一个LED去闪烁电路及其方法。 LED控制器包括：占空比计算电路，用于接收脉宽调制（PWM）信号并产生指示PWM信号的数字占空比的占空比输入信号; LED去闪烁电路，用于接收占空比输入信号并产生占空比输出信号，其中对占空比输入信号中的噪声进行滤波; 以及调光电路，用于接收占空比输出信号并产生调光信号以控制LED电路; 其中当占空比输入信号的变化不大于滞后阈值时，占空比输出信号保持不变，当占空比输入信号的变化大于滞后阈值时，占空比输出信号跟随占空比输入信号。

公开(公告)号：US08269472B2

公开(公告)日：2012-09-18

申请号：US12890940

申请日：2010-09-27

Applicant: Shui-Mu Lin

Inventor： Shui-Mu Lin

IPC: G05F1/44

CPC classification number: H02M3/156 ,  H02M3/1582

Abstract: Control signals are generated for a buck-boost power stage of a buck-boost power converter to convert an input voltage to an output voltage. The buck-boost power stage includes an inductor and at least two power switches connected thereto. The output voltage is monitored to generate an error signal having clamped level according to a first detecting signal related to at least one of the input voltage, output voltage and inductor current. In a buck-boost mode, a compensation signal and a duty insertion signal are generated according to a second detecting signal related to at least one of the input voltage, output voltage, inductor current and variation of the output voltage, the error signal is compensated with the compensation signal to generate a compensated error signal, and the control signals are determined upon the combination of the compensated error signal, the duty insertion signal and a ramp signal.

Abstract translation: 为降压 - 升压功率转换器的降压 - 升压功率级产生控制信号，以将输入电压转换为输出电压。 降压 - 升压功率级包括电感器和至少两个连接到其上的功率开关。 监视输出电压以根据与输入电压，输出电压和电感器电流中的至少一个相关的第一检测信号产生具有钳位电平的误差信号。 在降压 - 升压模式中，根据与输入电压，输出电压，电感器电流和输出电压的变化中的至少一个相关的第二检测信号产生补偿信号和占空比插入信号，误差信号被补偿 利用补偿信号产生经补偿的误差信号，并且在补偿的误差信号，占空比插入信号和斜坡信号的组合上确定控制信号。

公开(公告)号：US08169198B2

公开(公告)日：2012-05-01

申请号：US12219561

申请日：2008-07-24

Applicant: Shui-Mu Lin ,  Jien-Sheng Chen ,  Kwan-Jen Chu ,  Tsung-Wei Huang ,  Chao-Hsuan Chuang

Inventor： Shui-Mu Lin ,  Jien-Sheng Chen ,  Kwan-Jen Chu ,  Tsung-Wei Huang ,  Chao-Hsuan Chuang

IPC: G05F1/00

CPC classification number: H02M3/158 ,  H02M1/44

Abstract: The phase node voltage or the PWM signal in an asynchronous boost converter is monitored to detect a phase node voltage ringing. When a phase node voltage ringing is detected, a detection signal is asserted to establish a bypass path to bypass the inductor of the converter. A charge bypass circuit is shunt to the inductor, and controlled by the detection signal to establish the bypass path. Due to the bypass path, the phase node voltage is maintained at a constant, and the phase node voltage radiation and input/output noise are eliminated.

Abstract translation: 监控异步升压转换器中的相位节点电压或PWM信号，以检测相位节点电压振铃。 当检测到相位节点电压振铃时，检测信号被断言以建立绕过转换器电感器的旁路路径。 电荷旁路电路分流到电感，并由检测信号控制，建立旁路。 由于旁通路径，相位节点电压保持恒定，并且消除了相位节点电压辐射和输入/输出噪声。

公开(公告)号：US08120287B2

公开(公告)日：2012-02-21

申请号：US12585481

申请日：2009-09-16

Applicant: Shui-Mu Lin ,  Ti-Ti Liu ,  Huan-Chien Yang

Inventor： Shui-Mu Lin ,  Ti-Ti Liu ,  Huan-Chien Yang

IPC: H05B37/00

CPC classification number: H05B33/0827

Abstract: A LED display system includes multiple LEDs, a power converter to produce a supply voltage for the LEDs, and multiple drivers to drive the LEDs. According to the maximum one of the forward voltages of the LEDs, the drivers provides a feedback signal for the supply voltage control, and the feedback signal is amplified or digitized to reduce the voltage drop in the global power line.

Abstract translation: LED显示系统包括多个LED，用于产生LED的电源电压的功率转换器和用于驱动LED的多个驱动器。 根据LED的正向电压中的最大一个，驱动器提供用于电源电压控制的反馈信号，并且反馈信号被放大或数字化以减小全局电力线中的电压降。

公开(公告)号：US07888989B2

公开(公告)日：2011-02-15

申请号：US12068040

申请日：2008-02-01

Applicant: Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen

Inventor： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen

IPC: G05F1/10

CPC classification number: H02M3/07 ,  H02M2001/0045

Abstract: A charge pump regulator has a charge pump to establish a charge path and a discharge path alternately, so as to produce a regulated voltage on an output terminal. The charge pump has at least a current control element on the charge path or the discharge path to control the current flowing therethrough according to an output-dependent feedback signal.

Abstract translation: 电荷泵调节器具有电荷泵，以交替地建立充电路径和放电路径，以便在输出端子上产生调节电压。 电荷泵在充电路径或放电路径上至少具有电流控制元件，以根据输出相关的反馈信号来控制流过其中的电流。

公开(公告)号：US20110006697A1

公开(公告)日：2011-01-13

申请号：US12831528

申请日：2010-07-07

Applicant: TSUNG-WEI HUANG ,  SHUI-MU LIN ,  PAO-HSUN YU ,  YING-HSIN HSING

Inventor： TSUNG-WEI HUANG ,  SHUI-MU LIN ,  PAO-HSUN YU ,  YING-HSIN HSING

IPC: H05B37/02

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

Abstract: A LED driver integrated circuit has a voltage input pin, a voltage output pin, a capacitor pin, and a switching circuit connected to the capacitor pin and the voltage output pin. The capacitor pin and the voltage output pin are for a flying capacitor to be connected therebetween, and thus the switching circuit and the flying capacitor establish a charge pump to convert an input voltage received by the voltage input pin into an output voltage at the voltage output pin.

Abstract translation: LED驱动器集成电路具有电压输入引脚，电压输出引脚，电容引脚和连接到电容引脚和电压输出引脚的开关电路。 电容器引脚和电压输出引脚用于连接在其间的飞电容器，因此开关电路和飞跨电容器建立电荷泵，以将由电压输入引脚接收的输入电压转换为电压输出端的输出电压 销。

公开(公告)号：US20100231183A1

公开(公告)日：2010-09-16

申请号：US12459506

申请日：2009-07-02

Applicant: Chueh-Kuei Jan ,  Shui-Mu Lin

Inventor： Chueh-Kuei Jan ,  Shui-Mu Lin

IPC: G05F1/10

CPC classification number: H02M3/156 ,  H02M3/1582 ,  H02M2001/0022

Abstract: The present invention discloses a power converter with improved line transient, comprising: a power stage circuit including at least one power transistor switch which operates to convert an input voltage to an output voltage; an error amplifier comparing a feedback signal with a reference signal to generate an error signal; an input voltage instant variation extraction circuit extracting an instant variation of the input voltage and generating a signal relating to the instant variation; and a PWM comparator generating a PWM signal according to at least a ramp signal, the error signal, and the signal relating to the instant variation, to thereby control the operation of the power transistor switch in the power stage circuit.

Abstract translation: 本发明公开了一种具有改进的线路瞬变的功率转换器，包括：功率级电路，包括至少一个功率晶体管开关，功率晶体管开关用于将输入电压转换为输出电压; 将反馈信号与参考信号进行比较以产生误差信号的误差放大器; 输入电压瞬时变化提取电路，提取所述输入电压的瞬时变化并产生与所述瞬时变化相关的信号; 以及PWM比较器，根据至少一个斜坡信号，该误差信号和与该瞬时变化相关的信号产生PWM信号，从而控制功率级电路中的功率晶体管开关的操作。