公开(公告)号：US07773394B2

公开(公告)日：2010-08-10

申请号：US12116214

申请日：2008-05-07

Applicant: Yi-Lun Shen ,  Da-Chun Wei

Inventor： Yi-Lun Shen ,  Da-Chun Wei

IPC: H02H7/122 ,  H02M3/335

CPC classification number: H02M1/32 ,  H02M3/335 ,  H02M2001/0045

Abstract: An AC/DC power supply with over-voltage protection includes a voltage converting circuit and a digital latch control circuit. The voltage converting circuit has a first-side winding, a second-side winding, and an auxiliary winding for providing a supply voltage according to the AC input voltage. The digital latch control circuit is coupled to the voltage converting circuit and utilized for latching a voltage level of the supply voltage at a first predetermined level according to an over-voltage protection (OVP) trigger signal, where the voltage converting circuit is disabled when the voltage level is latched at the first predetermined level.

Abstract translation: 具有过电压保护的AC / DC电源包括电压转换电路和数字锁存控制电路。 电压转换电路具有第一侧绕组，第二侧绕组和辅助绕组，用于根据AC输入电压提供电源电压。 数字锁存控制电路耦合到电压转换电路，用于根据过电压保护（OVP）触发信号将电源电压的电压电平锁定在第一预定电平，其中当电压转换电路 电压电平锁定在第一预定电平。

公开(公告)号：US07576620B2

公开(公告)日：2009-08-18

申请号：US11777567

申请日：2007-07-13

Applicant: Yi-Lun Shen ,  Da-Chun Wei

Inventor： Yi-Lun Shen ,  Da-Chun Wei

IPC: H03B29/00 ,  H03K3/84 ,  G06F7/58

CPC classification number: H04J13/00 ,  H04J13/10

Abstract: A pseudo random clock generator includes a clock generator for generating a clock signal. A pseudo random code generator receives the clock signal and thereby generating a pseudo random code. A code limiter enables the value of the pseudo random code being unchanged for at least two periods of the clock signal. A logic gate applies a logic operation to the pseudo random code and the clock signal and thereby outputting a pseudo random clock.

Abstract translation: 伪随机时钟发生器包括用于产生时钟信号的时钟发生器。 伪随机码发生器接收时钟信号，从而产生伪随机码。 代码限制器使得伪随机码的值在时钟信号的至少两个周期内不变。 逻辑门对伪随机码和时钟信号施加逻辑运算，从而输出伪随机时钟。

公开(公告)号：US20090016413A1

公开(公告)日：2009-01-15

申请号：US11777567

申请日：2007-07-13

Applicant: Yi-Lun SHEN ,  Da-Chun WEI

Inventor： Yi-Lun SHEN ,  Da-Chun WEI

IPC: H04B1/707

CPC classification number: H04J13/00 ,  H04J13/10

Abstract: A pseudo random clock generator includes a clock generator for generating a clock signal. A pseudo random code generator receives the clock signal and thereby generating a pseudo random code. A code limiter enables the value of the pseudo random code being unchanged for at least two periods of the clock signal. A logic gate applies a logic operation to the pseudo random code and the clock signal and thereby outputting a pseudo random clock.

Abstract translation: 伪随机时钟发生器包括用于产生时钟信号的时钟发生器。 伪随机码发生器接收时钟信号，从而产生伪随机码。 代码限制器使得伪随机码的值在时钟信号的至少两个周期内不变。 逻辑门对伪随机码和时钟信号施加逻辑运算，从而输出伪随机时钟。

公开(公告)号：US08476883B2

公开(公告)日：2013-07-02

申请号：US13026282

申请日：2011-02-13

Applicant: Da-Chun Wei ,  Wen-Chung Yeh

Inventor： Da-Chun Wei ,  Wen-Chung Yeh

IPC: G05F1/652 ,  G05F1/613

CPC classification number: H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A compensation circuit has a resistor, a switch and a compensation capacitor. The resistor and the switch are connected in series between a power node and a compensation node. The compensation capacitor is connected to the compensation node, whose voltage is responsive to the output power source. For a predetermined period of time after the voltage falls below a predetermined value, the switch is open and no current flows through the resistor from the power node to the compensation node.

Abstract translation: 补偿电路具有电阻，开关和补偿电容。 电阻和开关串联连接在电源节点和补偿节点之间。 补偿电容连接到补偿节点，其补偿电压响应于输出电源。 在电压低于预定值之后的预定时间段内，开关断开，电流从电源节点到补偿节点没有电流流过电阻器。

公开(公告)号：US07480159B2

公开(公告)日：2009-01-20

申请号：US11737722

申请日：2007-04-19

Applicant: Da-Chun Wei ,  Yuan-Wen Chang

Inventor： Da-Chun Wei ,  Yuan-Wen Chang

IPC: H02M3/335 ,  H02M3/24

CPC classification number: H03K3/017 ,  H02M3/335 ,  H02M3/33523

Abstract: A pulse-width-modulation control circuit of a switching-mode power converter with a primary-side feedback control is disclosed. The switching-mode power converter includes a transformer, a power switch, a current sensing resistor and the pulse-width-modulation control circuit. The transformer includes a primary-side winding, a secondary-side winding and an auxiliary winding. The pulse-width-modulation control circuit includes a sample and hold circuit, a transconductor circuit, an error amplifier and a pulse-width-modulation generator.

Abstract translation: 公开了具有初级侧反馈控制的开关型功率转换器的脉宽调制控制电路。 开关型功率转换器包括变压器，电源开关，电流检测电阻器和脉宽调制控制电路。 变压器包括初级侧绕组，次级侧绕组和辅助绕组。 脉宽调制控制电路包括采样和保持电路，跨导电路，误差放大器和脉冲宽度调制发生器。

公开(公告)号：US07193453B2

公开(公告)日：2007-03-20

申请号：US11208651

申请日：2005-08-23

Applicant: Da-Chun Wei ,  Ju-Lin Chia ,  Yi-Shan Chu

Inventor： Da-Chun Wei ,  Ju-Lin Chia ,  Yi-Shan Chu

IPC: G05F1/10

CPC classification number: H03K17/165 ,  H03K17/04206

Abstract: A dual loop voltage regulation circuit of power supply chip is provided, comprising a capacitor for providing a voltage signal, a comparator for comparing a first reference voltage signal and the voltage signal to output forward or backward trigger signal, a first switch triggered by a forward trigger signal, a second switch triggered by a backward trigger signal, a first operational amplifier generating a first drive signal while the first and second switches are on, a first transistor switch triggered to be on by a first drive signal to provide a current source loop, a third switch triggered by a forward trigger signal, a fourth switch triggered by a backward trigger signal, a second operational amplifier generating a second drive signal while the third and fourth switches are on, and a second transistor switch triggered to be on by a second drive signal to provide a current sink loop.

公开(公告)号：US20070001749A1

公开(公告)日：2007-01-04

申请号：US11208651

申请日：2005-08-23

Applicant: Da-Chun Wei ,  Ju-Lin Chia ,  Yi-Shan Chu

Inventor： Da-Chun Wei ,  Ju-Lin Chia ,  Yi-Shan Chu

IPC: G05F1/10

CPC classification number: H03K17/165 ,  H03K17/04206

Abstract: A dual loop voltage regulation circuit of power supply chip is provided, comprising a capacitor for providing a voltage signal, a comparator for comparing a first reference voltage signal and the voltage signal to output forward or backward trigger signal, a first switch triggered by a forward trigger signal, a second switch triggered by a backward trigger signal, a first operational amplifier generating a first drive signal while the first and second switches are on, a first transistor switch triggered to be on by a first drive signal to provide a current source loop, a third switch triggered by a forward trigger signal, a fourth switch triggered by a backward trigger signal, a second operational amplifier generating a second drive signal while the third and fourth switches are on, and a second transistor switch triggered to be on by a second drive signal to provide a current sink loop.

Abstract translation: 提供电源芯片的双回路电压调节电路，包括用于提供电压信号的电容器，用于比较第一参考电压信号和电压信号以输出正向或反向触发信号的比较器，由前进触发的第一开关 触发信号，由反向触发信号触发的第二开关;第一运算放大器，当所述第一和第二开关导通时产生第一驱动信号;第一晶体管开关由第一驱动信号触发以导通，以提供电流源回路 ，由正向触发信号触发的第三开关，由反向触发信号触发的第四开关，在第三和第四开关导通时产生第二驱动信号的第二运算放大器，以及由第二开关触发的第二晶体管开关 第二驱动信号以提供电流吸收环路。

公开(公告)号：US20110211372A1

公开(公告)日：2011-09-01

申请号：US13026282

申请日：2011-02-13

Applicant: Da-Chun Wei ,  Wen-Chung Yeh

Inventor： Da-Chun Wei ,  Wen-Chung Yeh

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A compensation circuit has a resistor, a switch and a compensation capacitor. The resistor and the switch are connected in series between a power node and a compensation node. The compensation capacitor is connected to the compensation node, whose voltage is responsive to the output power source. For a predetermined period of time after the voltage falls below a predetermined value, the switch is open and no current flows through the resistor from the power node to the compensation node.

Abstract translation: 补偿电路具有电阻，开关和补偿电容。 电阻和开关串联连接在电源节点和补偿节点之间。 补偿电容连接到补偿节点，其补偿电压响应于输出电源。 在电压低于预定值之后的预定时间段内，开关断开，电流从电源节点到补偿节点没有电流流过电阻器。

公开(公告)号：US20100052742A1

公开(公告)日：2010-03-04

申请号：US12200908

申请日：2008-08-28

Applicant: Chun-Teh Chen ,  Ren-Yi Chen ,  Da-Chun Wei

Inventor： Chun-Teh Chen ,  Ren-Yi Chen ,  Da-Chun Wei

IPC: H03K4/06

CPC classification number: H03K17/0822 ,  H03K4/94

Abstract: A PWM control circuit is disclosed. An oscillator generates a triangular signal, received by a limit signal generator to produce a limit signal accordingly. Corresponding to a rising period of the triangular signal, the limit signal sequentially experiences a first holding period, a rising period and a second holding period, wherein the limit signal has a first predetermined value during the first holding period and a second predetermined value during the second holding period. A compare/control circuit compares the limit signal with a detection signal corresponding to a current through a power switch, and controls the power switch accordingly.

Abstract translation: 公开了PWM控制电路。 振荡器产生由限制信号发生器接收的三角形信号，以产生相应的极限信号。 对应于三角形信号的上升期间，限制信号依次经历第一保持期间，上升期间和第二保持期间，其中限制信号在第一保持期间具有第一预定值，在第 第二期。 比较/控制电路将限制信号与对应于通过电源开关的电流的检测信号进行比较，并相应地控制电源开关。

公开(公告)号：US07642733B2

公开(公告)日：2010-01-05

申请号：US12123455

申请日：2008-05-19

Applicant: Yi-Lun Shen ,  Da-Chun Wei

Inventor： Yi-Lun Shen ,  Da-Chun Wei

IPC: H05B37/02

CPC classification number: H05B33/0818

Abstract: A light emitting device driving circuit, includes: a switch device, a comparator, a driving module, a time counting circuit and a compensation module. The switch device is turned on or off according to a control signal for controlling a driving current flowing through the light emitting device. The comparator generates a comparison result according to a reference voltage and a feedback voltage corresponding to the driving current. The driving module generates the control signal according to the comparison result. The time counting circuit controls the driving module to turn on the switch device after the switch device turns off for a predetermined time. The compensation module detects a turn on time for the switch device and a delay time between the feedback voltage reaching the reference voltage value and the control signal varying correspondingly, and adjusts the reference voltage according to the turn on time and the delay time.

Abstract translation: 一种发光器件驱动电路，包括：开关器件，比较器，驱动模块，时间计数电路和补偿模块。 开关装置根据用于控制流过发光装置的驱动电流的控制信号而导通或截止。 比较器根据参考电压和对应于驱动电流的反馈电压产生比较结果。 驱动模块根据比较结果生成控制信号。 时间计数电路控制驱动模块在开关装置关闭预定时间后接通开关装置。 补偿模块检测开关器件的导通时间，反馈电压达到参考电压值和控制信号之间的延迟时间相应变化，并根据导通时间和延迟时间调整参考电压。