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1. 发明授权

US06611439B1 PWM controller for controlling output power limit of a power supply 有权
标题翻译：用于控制电源的输出功率限制的PWM控制器
公开(公告)号：US06611439B1
公开(公告)日：2003-08-26
申请号：US10065530
申请日：2002-10-28
申请人： Ta-yung Yang , Jenn-yu G. Lin , Shu-chung Yi
发明人： Ta-yung Yang , Jenn-yu G. Lin , Shu-chung Yi
IPC分类号： H02M3335
CPC分类号： H02M3/33523 , H02M1/36 , H02M2001/0022
摘要： A PWM controller has a line voltage input that allows using an input resistor for both start-up and power-limit compensation, thus saving the power consumption, easing the PCB layout, and shrinking the power supply size. In the integrated circuit, a mirrored-resistor used for the power limit compensation is composed of a mirror MOSFET, which is associated with an op amplifier, a constant voltage and a constant current to provide a precise resistance. Thus, by properly selecting the value of the input resistor, an identical output power limit for low line and high line voltage input can be achieved.
摘要翻译： PWM控制器具有线路电压输入，允许使用输入电阻进行启动和功耗限制补偿，从而节省功耗，减轻PCB布局，缩小电源尺寸。在集成电路中，用于功率限制补偿的镜像电阻由镜像MOSFET组成，其与运算放大器，恒定电压和恒定电流相关联，以提供精确的电阻。因此，通过适当地选择输入电阻的值，可以实现对于低线路和高线路电压输入的相同的输出功率限制。

2. 发明授权

US07285837B2 Electrostatic discharge device integrated with pad 有权
标题翻译：静电放电装置与垫片集成
公开(公告)号：US07285837B2
公开(公告)日：2007-10-23
申请号：US10905677
申请日：2005-01-17
申请人： Chih-Feng Huang , Tuo-Hsin Chien , Jenn-yu G. Lin , Ta-yung Yang
发明人： Chih-Feng Huang , Tuo-Hsin Chien , Jenn-yu G. Lin , Ta-yung Yang
IPC分类号： H01L23/58
CPC分类号： H01L27/0255
摘要： A structure of an electrostatic discharge (ESD) device integrated with a pad is provided. The ESD device is integrated with the pad and formed under the pad. By using the area under the pad, the ESD device does not occupy additional space of an integrated circuit. Furthermore, since the pad is a large, plate, and ideal conductor, the connected pad and the ESD device are capable of distributing current in the ESD device averagely.
摘要翻译：提供了与焊盘集成的静电放电（ESD）器件的结构。 ESD器件与焊盘集成并形成在焊盘下方。通过使用垫下的区域，ESD器件不占用集成电路的额外空间。此外，由于焊盘是大的，板状的和理想的导体，所以连接的焊盘和ESD器件能够平均地在ESD器件中分配电流。

3. 发明授权

US07102194B2 High voltage and low on-resistance LDMOS transistor having radiation structure and isolation effect 有权
标题翻译：具有辐射结构和隔离效果的高电压和低导通电阻LDMOS晶体管
公开(公告)号：US07102194B2
公开(公告)日：2006-09-05
申请号：US10919916
申请日：2004-08-16
申请人： Chih-Feng Huang , Ta-yung Yang , Jenn-yu G. Lin , Tuo-Hsin Chien
发明人： Chih-Feng Huang , Ta-yung Yang , Jenn-yu G. Lin , Tuo-Hsin Chien
IPC分类号： H01L29/94
CPC分类号： H01L29/7816 , H01L29/0634 , H01L29/0692 , H01L29/0696 , H01L29/0886 , H01L29/42368
摘要： A high voltage LDMOS transistor according to the present invention includes at least one P-field block in the extended drain region of the N-well. The P-field blocks form junction-fields in the N-well for equalizing the capacitance of parasitic capacitors between the drain region and the source region and fully deplete the drift region before breakdown occurs. A higher breakdown voltage is therefore achieved and the N-well having a higher doping density is thus allowed. The source region and P-field blocks enclose the drain region, which makes the LDMOS transistor self-isolated.
摘要翻译：根据本发明的高电压LDMOS晶体管包括N阱扩展漏极区中的至少一个P场模块。 P场块在N阱中形成结场，用于均衡漏极区和源极区之间的寄生电容的电容，并在击穿之前完全耗尽漂移区。因此实现更高的击穿电压，因此允许具有较高掺杂密度的N阱。源极区域和P场区域封装漏极区域，这使得LDMOS晶体管自隔离。

4. 发明申请

US20060157790A1 ELECTROSTATIC DISCHARGE DEVICE INTEGRATED WITH PAD 有权
标题翻译：静电放电装置与PAD集成
公开(公告)号：US20060157790A1
公开(公告)日：2006-07-20
申请号：US10905677
申请日：2005-01-17
申请人： Chih-Feng Huang , Tuo-Hsin Chien , Jenn-yu G. Lin , Ta-yung Yang
发明人： Chih-Feng Huang , Tuo-Hsin Chien , Jenn-yu G. Lin , Ta-yung Yang
IPC分类号： H01L23/62
CPC分类号： H01L27/0255
摘要： A structure of an electrostatic discharge (ESD) device integrated with a pad is provided. The ESD device is integrated with the pad and formed under the pad. By using the area under the pad, the ESD device does not occupy additional space of an integrated circuit. Furthermore, since the pad is a large, plate, and ideal conductor, the connected pad and the ESD device are capable of distributing current in the ESD device averagely.
摘要翻译：提供了与焊盘集成的静电放电（ESD）器件的结构。 ESD器件与焊盘集成并形成在焊盘下方。通过使用垫下的区域，ESD器件不占用集成电路的额外空间。此外，由于焊盘是大的，板状的和理想的导体，所以连接的焊盘和ESD器件能够平均地在ESD器件中分配电流。

5. 发明授权

US07054170B2 Power-mode controlled power converter 有权
标题翻译：功率模式控制功率转换器
公开(公告)号：US07054170B2
公开(公告)日：2006-05-30
申请号：US10752363
申请日：2004-01-05
申请人： Ta-yung Yang , Chern-Lin Chen , Jenn-yu G. Lin , Guo-Kiang Hung
发明人： Ta-yung Yang , Chern-Lin Chen , Jenn-yu G. Lin , Guo-Kiang Hung
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H01F2038/026
摘要： A power-mode controlled power converter is capable of supplying a constant output voltage and output current. A PWM controller generates a PWM signal in response to a voltage sampled from a transformer auxiliary winding. A programmable current-sink and a detection resistor compensate for a voltage drop of an output rectifier. A low-pass filter integrates a switching-current voltage to an average-current signal. An attenuator produces an input-voltage signal from a line-voltage input signal. The PWM controller multiplies the average-current signal with the input-voltage signal to generate a power-control signal. An error-amplifier compares the power-control signal with a power-reference voltage to generate a limit voltage. The limit voltage controls the power delivered from a primary-side circuit to a secondary-side circuit of the power-mode controlled power converter. Since the power-reference voltage varies in proportional to output voltage variations, a constant output current is therefore achieved.
摘要翻译：功率模式控制功率转换器能够提供恒定的输出电压和输出电流。 PWM控制器响应于从变压器辅助绕组采样的电压产生PWM信号。可编程电流吸收器和检测电阻器补偿输出整流器的电压降。低通滤波器将开关电流电压集成到平均电流信号。衰减器从线电压输入信号产生输入电压信号。 PWM控制器将平均电流信号与输入电压信号相乘以产生功率控制信号。误差放大器将功率控制信号与功率参考电压进行比较，以产生极限电压。极限电压控制从功率模式受控功率转换器的初级侧电路到次级侧电路的功率。由于功率参考电压与输出电压变化成比例变化，因此实现恒定的输出电流。

6. 发明授权

US07016204B2 Close-loop PWM controller for primary-side controlled power converters 有权
标题翻译：用于初级侧受控电源转换器的闭环PWM控制器
公开(公告)号：US07016204B2
公开(公告)日：2006-03-21
申请号：US10917106
申请日：2004-08-12
申请人： Ta-yung Yang , Guo-Kiang Hung , Jenn-yu G. Lin
发明人： Ta-yung Yang , Guo-Kiang Hung , Jenn-yu G. Lin
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0006 , H02M2001/0009
摘要： A close-loop PWM controller for a primary-side controlled power converter is provided. A voltage-waveform detector produces a voltage-feedback signal and a discharge-time signal. A current-waveform detector generates a current-waveform signal by measuring a primary-side switching current. An integrator generates a current-feedback signal by integrating the current-waveform signal with the discharge-time signal. A time constant of the integrator is correlated with a switching period of the switching signal, therefore the current-feedback signal is proportional to the output current of the power converter. The close-loop PWM controller further including a voltage-loop error amplifier and a current-loop error amplifier. A PWM circuit and comparators control the pulse width of the switching signal in response to the outputs of the voltage-loop error amplifier and the current-loop error amplifier. The output voltage and the maximum output current of the power converter are therefore regulated.
摘要翻译：提供了一个用于初级侧受控电源转换器的闭环PWM控制器。电压波形检测器产生电压反馈信号和放电时间信号。电流波形检测器通过测量初级侧开关电流产生电流波形信号。积分器通过将电流波形信号与放电时间信号进行积分而产生电流反馈信号。积分器的时间常数与开关信号的开关周期相关，因此电流反馈信号与功率转换器的输出电流成正比。闭环PWM控制器还包括电压环路误差放大器和电流环路误差放大器。 PWM电路和比较器响应于电压环路误差放大器和电流环路误差放大器的输出来控制开关信号的脉冲宽度。因此调节功率转换器的输出电压和最大输出电流。

7. 发明授权

US06836415B1 Primary-side regulated pulse width modulation controller with improved load regulation 失效
标题翻译：初级侧调节脉宽调制控制器，具有改进的负载调节
公开(公告)号：US06836415B1
公开(公告)日：2004-12-28
申请号：US10465161
申请日：2003-06-18
申请人： Ta-yung Yang , Chem-Lin Chen , Jenn-yu G. Lin , Song-Yi Lin
发明人： Ta-yung Yang , Chem-Lin Chen , Jenn-yu G. Lin , Song-Yi Lin
IPC分类号： H02M3335
CPC分类号： H02M3/33507 , H01F2038/026 , H02M2001/0006
摘要： The present invention provides a primary-side regulated PWM controller with improved load regulation. In every PWM cycle, a built-in feedback voltage samples and holds a flyback voltage from the auxiliary winding of the transformer via a sampling switch and generates a feedback voltage accordingly. A bias current sink pulls a bias current that is proportional to the feedback voltage. Via a detection resistor, the bias current will produce a voltage drop to compensate the voltage drop of an output rectifying diode as the output load changes. According to the present invention, the bias current can enable the PWM controller to regulate the output voltage very precisely without using a secondary feedback circuit.
摘要翻译：本发明提供了具有改进的负载调节的初级侧调节PWM控制器。在每个PWM周期中，内置的反馈电压通过采样开关采样并保持来自变压器的辅助绕组的反激电压，并产生相应的反馈电压。偏置电流吸收器提供与反馈电压成比例的偏置电流。通过检测电阻，当输出负载变化时，偏置电流将产生电压降，以补偿输出整流二极管的电压降。根据本发明，偏置电流可使PWM控制器非常精确地调节输出电压，而不使用次级反馈电路。

8. 发明授权

US06768655B1 Discontinuous mode PFC controller having a power saving modulator and operation method thereof 失效
标题翻译：具有省电调制器的不连续模式PFC控制器及其操作方法
公开(公告)号：US06768655B1
公开(公告)日：2004-07-27
申请号：US10357842
申请日：2003-02-03
申请人： Ta-yung Yang , Chern-Lin Chen , Jenn-yu G. Lin
发明人： Ta-yung Yang , Chern-Lin Chen , Jenn-yu G. Lin
IPC分类号： H02M3335
CPC分类号： H02M1/4225 , H02M2001/0032 , Y02B70/126 , Y02B70/16 , Y02P80/112
摘要： The present invention discloses a ZCS discontinuous mode PFC controller having a power saving modulator. The controller turns on through the feedback resistor and the parasitic diode of the controller, thus eliminating the need for a startup resistor. To achieve ZCS, the inductor current is released to zero, while the switching signal is off, before the next switching cycle starts. In order to decrease the switching frequency for light load conditions, an off-time delay is inserted right before the start of every switching cycle. The off-time delay is modulated to be the function of the feedback voltage and supply voltage. When the supply voltage is lower than the limit voltage, the off-time delay will decrease to inhibit the decrease of a switching frequency therefore prevents a low supply voltage. The switching frequency is decreased in accordance with the decrease of the load. Consequently, the switching losses and power consumption for light load and no load conditions are reduced.
摘要翻译：本发明公开了一种具有省电调制器的ZCS不连续模式PFC控制器。控制器通过反馈电阻和控制器的寄生二极管接通，因此无需启动电阻。为了实现ZCS，在下一个开关周期开始之前，电感电流释放为零，而开关信号关闭。为了降低轻负载条件的开关频率，在每个开关周期开始之前插入关断时间延迟。关断时间延迟被调制为反馈电压和电源电压的函数。当电源电压低于极限电压时，关断时间延迟将降低，以抑制开关频率的降低，从而防止低电源电压。开关频率根据负载的减小而减小。因此，减轻了轻负载和无负载条件下的开关损耗和功耗。

9. 发明授权

US06674656B1 PWM controller having a saw-limiter for output power limit without sensing input voltage 有权
标题翻译： PWM控制器具有用于输出功率限制的锯限制器，无需感测输入电压
公开(公告)号：US06674656B1
公开(公告)日：2004-01-06
申请号：US10065532
申请日：2002-10-28
申请人： Ta-yung Yang , Jenn-yu G. Lin
发明人： Ta-yung Yang , Jenn-yu G. Lin
IPC分类号： H02M3335
CPC分类号： H02M3/33523 , H02M2001/0022 , H02M2001/0025
摘要： A PWM controller having a saw-limiter for power limit without input voltage sensing. The saw-limiter has an adder, a reference voltage, a scaler and a saw-tooth signal that is generated by the PWM oscillator. The saw-limiter produces a saw-limited voltage. The PWM controller will turn off its output when the current-sense input signal of the PWM controller is higher than the saw-limited voltage. The saw-limited voltage is equal to the reference voltage while a PWM switching period starts. After that, the amplitude of the saw-limited voltage will gradually increase until it reaches its maximum voltage. Subsequently, a saw-tooth like waveform is generated for the saw-limited voltage. The slope of the current-sense input signal is proportional to the line voltage. Therefore, a higher line voltage creates a sharp slope for the current-sense input signal, which will be restricted by a lower saw-limited voltage and produces a shorter PWM signal. The PWM signal will be turned off once the voltage of the current sense input signal is higher than the saw limited voltage. In terms of power limit, using the saw-limiter the power limit will be lower when the line voltage is higher. By properly selecting the value of the scaler an identical output power limit for the low line and high line voltage input can be achieved.
摘要翻译：一个PWM控制器，具有无限制输入电压检测功率限制器。锯限制器具有由PWM振荡器产生的加法器，参考电压，定标器和锯齿信号。锯限制器产生锯限电压。当PWM控制器的电流检测输入信号高于锯限电压时，PWM控制器将关闭其输出。在PWM开关周期开始时，锯限电压等于参考电压。之后，锯限制电压的幅度将逐渐增加，直到达到其最大电压。随后，锯锯状电压产生锯齿形波形。电流检测输入信号的斜率与线路电压成比例。因此，较高的线路电压会为电流检测输入信号产生尖锐的斜率，这将受到较低的锯限制电压的限制，并产生较短的PWM信号。一旦电流检测输入信号的电压高于锯限制电压，PWM信号将被关闭。在功率限制方面，使用锯限制器，当线路电压较高时，功率限制将较低。通过适当选择缩放器的值，可以实现低线路和高线路电压输入的相同输出功率限制。

10. 发明授权

US06661679B1 PWM controller having adaptive off-time modulation for power saving 有权
标题翻译：具有自适应关断时间调制功能的PWM控制器
公开(公告)号：US06661679B1
公开(公告)日：2003-12-09
申请号：US10065531
申请日：2002-10-28
申请人： Ta-yung Yang , Jenn-yu G. Lin
发明人： Ta-yung Yang , Jenn-yu G. Lin
IPC分类号： H02M114
CPC分类号： H02M1/40 , H01F2038/026 , H02M3/33523 , H02M2001/0032 , Y02B70/16
摘要： An adaptive off-time modulator of a PWM controller is provided for power saving in the light-load and no-load conditions. The maximum on-time is kept as a constant and a bias current of the oscillator in the PWM controller is moderated to achieve the off-time modulation. Reduction of the bias current increases the off-time of the switching period. The bias current is a function of the supply voltage and the feedback voltage, which is derived from a voltage feedback loop. A threshold voltage defines the level of the light load. A limit voltage defines the low level of the supply voltage. A bias current synthesizer generates the bias current. Once the feedback voltage is decreased lower than the threshold voltage, the bias current is reduced linearly and the off-time of the switching period is increased gradually. When the supply voltage is lower than the limit voltage, the bias current increases and determines a maximum off-time of the switching period. The maximum on-time and off-time of the switching period determines the PWM frequency. As the limit voltage varies in every switching cycle, the frequency spectrum of PWM signal spreads in light-load and no-load conditions; and therefore, the acoustic noise is suppressed. The feedback voltage and the supply voltage determine the switching period of the PWM signal. The maximum on-time is kept constant and the switching period is increased by increasing the off-time, such that the magnetic components, such as inductors and transformers, are prevented from being saturated.
摘要翻译：提供PWM控制器的自适应关断时间调制器，用于轻负载和无负载条件下的功率节省。将最大导通时间保持为恒定，并且调节PWM控制器中的振荡器的偏置电流以实现关断时间调制。偏置电流的减小增加了开关周期的关断时间。偏置电流是由电压反馈回路导出的电源电压和反馈电压的函数。阈值电压定义轻负载的电平。极限电压定义电源电压的低电平。偏置电流合成器产生偏置电流。一旦反馈电压降低到低于阈值电压，则偏置电流线性减小，并且切换周期的关闭时间逐渐增加。当电源电压低于极限电压时，偏置电流增加并确定开关周期的最大关断时间。开关周期的最大导通时间和关断时间决定了PWM频率。随着每个开关周期的限制电压变化，PWM信号的频谱在轻负载和空载条件下扩展; 因此抑制声学噪声。反馈电压和电源电压决定了PWM信号的开关周期。最大导通时间保持恒定，并且通过增加关断时间来增加开关周期，使得防止诸如电感器和变压器的磁性部件饱和。

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