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41. 发明授权

US07091710B2 Low dropout voltage regulator providing adaptive compensation 有权
标题翻译：低压差稳压器提供自适应补偿
公开(公告)号：US07091710B2
公开(公告)日：2006-08-15
申请号：US10838925
申请日：2004-05-03
申请人： Ta-yung Yang , Jenn-yu G. Lin , Chien-Liang Chen
发明人： Ta-yung Yang , Jenn-yu G. Lin , Chien-Liang Chen
IPC分类号： G05F1/40
CPC分类号： G05F1/575
摘要： A method and apparatus to dynamically modify internal compensation of a low dropout (LDO) voltage regulator is provided. The LDO voltage regulator includes an output pass transistor, an error amplifier, a bias transistor and a compensation network. The compensation network is connected between a gate and a drain of the output pass transistor to compensate for the feedback loop. The compensation network and the bias transistor generate pole-zero pairs to perform a maximum 45 degrees phase shift before reaching the crossover frequency in the LDO voltage regulator. Therefore a minimum 45 degrees phase margin is provided for the feedback loop in various load conditions. Furthermore, the pole-zero pairs produced in the LDO voltage regulator are adaptively adjusted according to load conditions, so that the bandwidth is optimized and faster transient response is achieved.
摘要翻译：提供了一种用于动态修改低压差（LDO）电压调节器的内部补偿的方法和装置。 LDO稳压器包括输出传输晶体管，误差放大器，偏置晶体管和补偿网络。补偿网络连接在输出传输晶体管的栅极和漏极之间，以补偿反馈环路。补偿网络和偏置晶体管产生极点对，以在LDO稳压器达到交越频率之前执行最大45度相移。因此，在各种负载条件下，为反馈回路提供最小45度的相位裕度。此外，LDO稳压器中产生的极点对根据负载条件进行自适应调整，从而优化带宽，实现更快的瞬态响应。

42. 发明授权

US06995428B2 High voltage LDMOS transistor having an isolated structure 有权
标题翻译：具有隔离结构的高压LDMOS晶体管
公开(公告)号：US06995428B2
公开(公告)日：2006-02-07
申请号：US10786703
申请日：2004-02-24
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： H01L29/76
CPC分类号： H01L29/0634 , H01L29/0878 , H01L29/0886 , H01L29/42368 , H01L29/7816
摘要： A high voltage LDMOS transistor according to the present invention includes a P-field and divided P-fields in an extended drain region of a N-well. The P-field and divided P-fields form junction-fields in the N-well, in which a drift region is fully depleted before breakdown occurs. Therefore, a higher breakdown voltage is achieved and a higher doping density of the N-well is allowed. Higher doping density can effectively reduce the on-resistance of the LDMOS transistor. Furthermore, the N-well generated beneath a source diffusion region provides a low-impedance path for a source region, which restrict the transistor current flow in between a drain region and a source region.
摘要翻译：根据本发明的高电压LDMOS晶体管包括在N阱的扩展漏极区域中的P场和分割的P场。 P场和分割的P场在N阱中形成结场，其中漂移区在击穿之前被完全耗尽。因此，实现更高的击穿电压，并且允许N阱的较高的掺杂密度。较高的掺杂密度可以有效降低LDMOS晶体管的导通电阻。此外，在源极扩散区域之下产生的N阱为源极区域提供了低阻抗路径，其限制了漏极区域和源极区域之间的晶体管电流。

43. 发明授权

US06873011B1 High voltage and low on-resistance LDMOS transistor having equalized capacitance 失效
标题翻译：具有均衡电容的高电压和低导通电阻LDMOS晶体管
公开(公告)号：US06873011B1
公开(公告)日：2005-03-29
申请号：US10786701
申请日：2004-02-24
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： H01L29/06 , H01L29/78 , H01L29/94
CPC分类号： H01L29/7816 , H01L29/0623 , H01L29/0634 , H01L29/0696
摘要： A high voltage LDMOS transistor according to the present invention includes P-field blocks in the extended drain region of a N-well. The P-field blocks form the 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 higher doping density reduces the on-resistance of the transistor. Furthermore, the portion of the N-well generated beneath the source diffusion region produces a low-impedance path for the source region, which restricts the transistor current flow in between the drain region and the source region.
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P场区块。 P-场块形成N阱中的结场，用于均衡漏极区域和源极区域之间的寄生电容器的电容，并且在击穿之前完全耗尽漂移区域。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。较高的掺杂密度降低了晶体管的导通电阻。此外，在源极扩散区域之下产生的N阱的部分产生用于源极区域的低阻抗路径，其限制了漏极区域和源极区域之间的晶体管电流。

44. 发明授权

US06744611B2 Over-voltage crowbar for lightning surge and ESD protection 失效
标题翻译：用于雷电浪涌和ESD保护的过电压撬棒
公开(公告)号：US06744611B2
公开(公告)日：2004-06-01
申请号：US10065533
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： H02H900
CPC分类号： H02H9/041
摘要： FI over-voltage crowbar provides lightning surge and ESD protection. The crowbar has a clamping transistor, which is driven by a mirror-amplifier. When an input surge voltage is higher than the voltage of a Zener diode, the mirror-amplifier will be switched on and generate an amplified voltage. The amplified voltage works together with a speed-up capacitor easily to switch on the clamping transistor. The mirror-amplifier has an n-transistor and two p-transistors, which provide sufficient headroom for the turn-on of a clamping transistor. The over-voltage crowbar of this invention rapidly drives the clamping transistor to low impedance, thereby achieving a higher sustenance rating for lightning surge and ESD in the integrated circuit.
摘要翻译： FI过压撬棒提供雷电浪涌和ESD保护。撬棒具有由镜像放大器驱动的钳位晶体管。当输入浪涌电压高于齐纳二极管的电压时，镜像放大器将被接通并产生放大的电压。放大的电压与加速电容一起工作，容易打开钳位晶体管。镜面放大器具有n型晶体管和两个p型晶体管，为钳位晶体管的导通提供足够的余量。本发明的过电压撬棒将钳位晶体管快速驱动到低阻抗，从而为集成电路中的雷电浪涌和ESD提供更高的维持等级。

45. 发明授权

US06262549B1 Fan speed pulse filter for a PWM fan 失效
标题翻译：用于PWM风扇的风扇速度脉冲滤波器
公开(公告)号：US06262549B1
公开(公告)日：2001-07-17
申请号：US09607024
申请日：2000-06-29
申请人： Ta-yung Yang , Jenn-yu G. Lin , Cheng-chi Hsueh
发明人： Ta-yung Yang , Jenn-yu G. Lin , Cheng-chi Hsueh
IPC分类号： G01P3489
CPC分类号： G01P3/489 , G01P3/481 , Y10S388/912
摘要： A fan speed pulse filter is used for a PWM fan. The filter comprises a comparator, a latch circuit and a synchronizer. The fan unit, including a tachometer pulse output, is controlled by a PWM signal for determining the fan speed. By comparing the PWM signal with a reference voltage, the comparator generates a reset signal. The latch circuit, coupled to the comparator and the fan unit, receives the reset signal and the tachometer pulse and outputs a filtered tachometer pulse containing no phantom pulses. Furthermore, a synchronizer generates an output signal without interruption when the PWM signal is switched off.
摘要翻译：风扇转速脉冲滤波器用于PWM风扇。滤波器包括比较器，锁存电路和同步器。包括转速计脉冲输出的风扇单元由用于确定风扇速度的PWM信号控制。通过将PWM信号与参考电压进行比较，比较器产生复位信号。耦合到比较器和风扇单元的锁存电路接收复位信号和转速计脉冲，并输出不含幻影脉冲的滤波转速计脉冲。此外，当PWM信号关闭时，同步器产生输出信号而不中断。

46. 发明授权

US06861827B1 Low drop-out voltage regulator and an adaptive frequency compensation 失效
标题翻译：低压差稳压器和自适应频率补偿
公开(公告)号：US06861827B1
公开(公告)日：2005-03-01
申请号：US10666803
申请日：2003-09-17
申请人： Ta-yung Yang , Hsuan-I Pan , Chern-Lin Chen
发明人： Ta-yung Yang , Hsuan-I Pan , Chern-Lin Chen
IPC分类号： G05F1/575 , G05F3/26 , G05F1/40
CPC分类号： G05F1/575 , G05F3/262
摘要： A method and apparatus to dynamically modify the internal compensation of a low drop-out (LDO) voltage regulator is presented. The process involves creating an additional equivalent series resistance (ESR) from an internal circuit. The additional ESR of the internal circuit is sufficient to ensure the DC output stability. This allows the ESR of the output capacitance to be reduced to zero if desired, for improved transient response.
摘要翻译：提出了一种动态修改低压差（LDO）稳压器内部补偿的方法和装置。该过程涉及从内部电路产生额外的等效串联电阻（ESR）。内部电路的额外ESR足以确保直流输出稳定。如果需要，这允许输出电容的ESR减小到零，以改善瞬态响应。

47. 发明申请

US20050007083A1 Power supply having multi-vector error amplifier for power factor correction 有权
公开(公告)号：US20050007083A1
公开(公告)日：2005-01-13
申请号：US10617515
申请日：2003-07-10
申请人： Ta-yung Yang , Yi-Hsin Leu , Chern-Lin Chen , Jenn-Yu Lin
发明人： Ta-yung Yang , Yi-Hsin Leu , Chern-Lin Chen , Jenn-Yu Lin
IPC分类号： G05F1/40 , G05F1/56 , H02M1/00 , H02M1/42 , H02M7/00
CPC分类号： H02M1/4225 , H02M2001/4275 , Y02B70/126
摘要： A regulated power supply having power factor correction control includes a multi-vector error amplifier. The multi-vector error amplifier provides an error signal that is used to regulate a switching mechanism of the power supply. The multi-vector error amplifier acts to provide a low distortion error signal during steady-state operation, while responding rapidly and smoothly to sudden load changes.

48. 发明授权

US08866512B2 Feedback terminal of power converter having programming function for parameter setting 有权
标题翻译：功率转换器的反馈端子具有参数设置的编程功能
公开(公告)号：US08866512B2
公开(公告)日：2014-10-21
申请号：US13217827
申请日：2011-08-25
申请人： Ta-yung Yang , Yen-Ting Chen , Tien-Chi Lin , Kai-Fang Wei
发明人： Ta-yung Yang , Yen-Ting Chen , Tien-Chi Lin , Kai-Fang Wei
IPC分类号： H03K5/00 , H02M3/156 , H02M1/00
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A control circuit of a power converter according to the present invention comprises a switching circuit, a sample-and-hold circuit and a current source. The switching circuit generates a switching signal in response to a feedback signal. The sample-and-hold circuit samples the feedback signal. The current source is coupled to a feedback terminal for generating a programming voltage. A programmable signal is generated in accordance with the programming voltage and the feedback signal, and the programmable signal is coupled to set a parameter.
摘要翻译：根据本发明的功率转换器的控制电路包括开关电路，采样保持电路和电流源。开关电路响应于反馈信号产生开关信号。采样和保持电路对反馈信号进行采样。电流源耦合到用于产生编程电压的反馈端子。根据编程电压和反馈信号产生可编程信号，并且可编程信号被耦合以设置参数。

49. 发明授权

US08587964B2 Control circuit with burst mode and extended valley switching for quasi-resonant power converter 有权
标题翻译：具有突发模式的控制电路和用于准谐振功率转换器的扩展谷底开关
公开(公告)号：US08587964B2
公开(公告)日：2013-11-19
申请号：US13182839
申请日：2011-07-14
申请人： Ta-yung Yang , Jung-Sheng Chen , Chuh-Ching Li , Chih-Hsien Hsieh
发明人： Ta-yung Yang , Jung-Sheng Chen , Chuh-Ching Li , Chih-Hsien Hsieh
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0035 , H02M2001/0054 , Y02B70/1433 , Y02B70/1491 , Y02B70/16
摘要： A control circuit for power converter according to the present invention comprises a PWM circuit generating a switching signal coupled to switch a transformer of the power converter. A feedback input circuit is coupled to an output of the power converter for generating a feedback signal. The feedback signal is coupled to turn off the switching signal. A detection circuit is coupled to the transformer for generating a valley signal in response to a waveform of the transformer. A frequency-variation circuit is coupled to receive the feedback signal and the valley signal for generating a frequency-variation signal. The frequency-variation signal is coupled to turn on the switching signal. A burst circuit is coupled to receive the feedback signal for generating a burst signal to disable the switching signal.
摘要翻译：根据本发明的用于功率转换器的控制电路包括PWM电路，其产生耦合以切换功率转换器的变压器的开关信号。反馈输入电路耦合到功率转换器的输出端，用于产生反馈信号。反馈信号被耦合以关闭开关信号。检测电路耦合到变压器，以响应于变压器的波形产生谷值信号。频率变化电路被耦合以接收反馈信号和谷值信号以产生频率变化信号。频率变化信号被耦合以接通开关信号。突发电路被耦合以接收反馈信号以产生突发信号以禁用开关信号。

50. 再颁专利

USRE43015E1 Capacitive high-side switch driver for a power converter 失效
标题翻译：用于电源转换器的电容式高边开关驱动器
公开(公告)号：USRE43015E1
公开(公告)日：2011-12-13
申请号：US11487578
申请日：2006-07-14
申请人： Ta-yung Yang
发明人： Ta-yung Yang
IPC分类号： H03K3/00 , H03B1/00
CPC分类号： H03K17/04123 , H03K17/063 , H03K2217/0081
摘要： The present invention discloses a capacitive high-side switch driver for a power converter. The capacitive high-side switch driver according to the present invention includes an inverter and two alternately conducting totem-pole buffers with complementary duty cycles. The duty cycles alternate in response to an input signal. The capacitive high-side switch driver further includes a low-side transistor and a high-side transistor. Once the low-side transistor is turned on, a bootstrap capacitor is charged to create a floating voltage via a charge-pump diode to supply power for the high-side switch driver. To supply additional power for the high-side switch driver, differential signals are produced to further charge the bootstrap capacitor via a bridge rectifier. The capacitive high-side switch driver utilizes a programmable load to provide variable impedance. Furthermore, an under-voltage protector supervises the supply voltage to ensure a reliable gate driving voltage.
摘要翻译：本发明公开了一种用于功率转换器的电容式高侧开关驱动器。根据本发明的电容式高侧开关驱动器包括逆变器和具有互补占空比的两个交替导电的图腾柱缓冲器。占空比响应于输入信号而交替。电容式高侧开关驱动器还包括低端晶体管和高侧晶体管。一旦低端晶体管导通，自举电容器被充电，以通过电荷泵二极管产生浮置电压，为高侧开关驱动器供电。为了为高侧开关驱动器提供额外的电源，产生差分信号以通过桥式整流器进一步对自举电容器充电。电容式高边开关驱动器利用可编程负载来提供可变阻抗。此外，欠压保护器监控电源电压以确保可靠的栅极驱动电压。

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