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1. 发明申请

US20140043002A1 CONTROL CIRCUIT WITH DEEP BURST MODE FOR POWER CONVERTER 有权
标题翻译：用于电源转换器的具有深度冲击模式的控制电路
公开(公告)号：US20140043002A1
公开(公告)日：2014-02-13
申请号：US13572777
申请日：2012-08-13
申请人： CHI-CHEN CHUNG , WEI-HSUAN HUANG
发明人： CHI-CHEN CHUNG , WEI-HSUAN HUANG
IPC分类号： G05F1/565
CPC分类号： H02M3/33507 , H02M1/08 , H02M2001/0035 , Y02B70/16
摘要： A control circuit with deep burst mode for power converter according to the present invention comprises a load detection circuit and a PWM circuit. The load detection circuit generates a switching control signal in response to a feedback signal. The feedback signal is correlated to a load condition of the power converter. The PWM circuit generates a switching signal to regulate an output of the power converter in response to the switching control signal and the feedback signal. The control circuit performs a deep burst mode to switch the switching signal only one time during each deep burst period when the load condition of the power converter is a very light-load. Therefore, switching loss is reduced so that the power consumption of the power converter is also reduced.
摘要翻译：根据本发明的用于功率转换器的具有深脉冲模式的控制电路包括负载检测电路和PWM电路。负载检测电路响应于反馈信号产生开关控制信号。反馈信号与功率转换器的负载状态相关。 PWM电路响应于开关控制信号和反馈信号产生开关信号以调节功率转换器的输出。当电力转换器的负载条件非常轻时，控制电路在每个深度脉冲串周期期间执行深脉冲串模式以切换开关信号一次。因此，开关损耗减小，功率转换器的功耗也降低。

2. 发明申请

US20110182090A1 SWITCHING CONTROLLER FOR POWER CONVERTERS 有权
标题翻译：电源转换器开关控制器
公开(公告)号：US20110182090A1
公开(公告)日：2011-07-28
申请号：US12720114
申请日：2010-03-09
申请人： WEI-HSUAN HUANG
发明人： WEI-HSUAN HUANG
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0009
摘要： A switching controller for power converter comprises a current-sense circuit and a PWM circuit, The current-sense circuit receives high-voltage signal across a first switch to generate a current-sense signal. The PWM circuit generates a switching signal to control the first switch in response to the current-sense signal. The switching controller further comprises a delay circuit. The delay circuit receives the switching signal to generate a delayed switching signal. The current-sense signal and the high-voltage signal ramp up with the same slope during the delayed switching signal is enabled. The current-sense signal will be pulled down to a level of a ground reference during the delayed switching signal is disabled. A delay time provided by the delay circuit avoids the high-voltage signal at the instance which the first switch is being turned off being conducted to a first comparator and a second comparator via a second switch.
摘要翻译：用于功率转换器的开关控制器包括电流检测电路和PWM电路。电流检测电路在第一开关上接收高电压信号以产生电流检测信号。 PWM电路产生开关信号以响应于电流检测信号来控制第一开关。开关控制器还包括延迟电路。延迟电路接收切换信号以产生延迟的切换信号。在延迟的开关信号期间，电流检测信号和高电压信号以相同的斜率上升。在延迟切换信号禁用期间，电流检测信号将被下拉至接地参考电平。由延迟电路提供的延迟时间避免了在第一开关被截止的情况下的高电压信号通过第二开关传导到第一比较器和第二比较器。

3. 发明申请

US20110211281A1 POWER SUPPLY WITH OPEN-LOOP PROTECTION 有权
标题翻译：具有开环保护功能的电源
公开(公告)号：US20110211281A1
公开(公告)日：2011-09-01
申请号：US12821511
申请日：2010-06-23
申请人： WEI-HSUAN HUANG , MENG-JEN TSAI , CHIEN-YUAN LIN , CHUAN-CHANG LI
发明人： WEI-HSUAN HUANG , MENG-JEN TSAI , CHIEN-YUAN LIN , CHUAN-CHANG LI
IPC分类号： H02H3/247
CPC分类号： H02M1/32 , H02M3/33523
摘要： A power supply with an open-loop protection according to the present invention comprises a transformer, a switch, a signal generation circuit, a feedback detection circuit, a brown-out detection circuit, and a delay circuit. The transformer receives an input voltage. The switch is coupled to the transformer for switching the transformer. The signal generation circuit generates a switching signal to control the switch. The feedback detection circuit generates a pull-high signal in response to a feedback signal of the power supply. The brown-out detection circuit generates a delay signal in response to the pull-high signal and the input voltage. The delay circuit counts a delay time in response to the delay signal for generating a disabling signal coupled to the signal generation circuit to latch the switching signal. The brown-out detection circuit is utilized to detect whether the input voltage is in the brown-out condition for determining whether the open-loop protection is executed.
摘要翻译：根据本发明的具有开环保护的电源包括变压器，开关，信号发生电路，反馈检测电路，欠压检测电路和延迟电路。变压器接收输入电压。开关耦合到变压器以切换变压器。信号发生电路产生开关信号以控制开关。反馈检测电路响应于电源的反馈信号产生拉高信号。欠压检测电路响应于上拉电阻和输入电压产生延迟信号。延迟电路响应于用于产生耦合到信号发生电路的禁用信号的延迟信号来计数延迟时间以锁存开关信号。欠压检测电路用于检测输入电压是否处于用于确定是否执行开环保护的欠压状态。

4. 发明申请

US20110176341A1 START-UP CIRCUIT TO DISCHARGE EMI FILTER OF POWER SUPPLIES 有权
标题翻译：启动电路放电电源滤波器
公开(公告)号：US20110176341A1
公开(公告)日：2011-07-21
申请号：US13017203
申请日：2011-01-31
申请人： WEI-HSUAN HUANG
发明人： WEI-HSUAN HUANG
IPC分类号： H02M1/00
CPC分类号： H02M1/126 , H02M1/36 , H02M2001/322
摘要： A start-up circuit to discharge EMI filter is developed for power saving. It includes a detection circuit detecting a power source for generating a sample signal. A sample circuit is coupled to the detection circuit for generating a reset signal in response to the sample signal. The reset signal is utilized for discharging a stored voltage of the EMI filter.
摘要翻译：开发了用于放电EMI滤波器的启动电路，用于省电。它包括检测电路以检测用于产生采样信号的电源。采样电路耦合到检测电路，用于响应于采样信号产生复位信号。复位信号用于放电EMI滤波器的存储电压。

5. 发明申请

US20110133829A1 FEEDBACK CIRCUIT WITH FEEDBACK IMPEDANCE MODULATION FOR IMPROVING POWER SAVING 有权
标题翻译：具有反馈阻抗调整功能的反馈电路，用于改善节电
公开(公告)号：US20110133829A1
公开(公告)日：2011-06-09
申请号：US12728608
申请日：2010-03-22
申请人： WEI-HSUAN HUANG
发明人： WEI-HSUAN HUANG
IPC分类号： H03H1/00
CPC分类号： H02M3/33507 , H02M2001/0032 , Y02B70/16
摘要： A feedback circuit with feedback impedance modulation according to the present invention comprises a compare circuit, a counter and a switching resistor circuit. The compare circuit receives a feedback signal of a power converter to compare the feedback signal with a threshold signal for generating a control signal. The feedback signal is correlated to a load condition of the power converter. The counter is coupled to the compare circuit and generates a modulation signal in response to the control signal. The switching resistor circuit is coupled to the counter and a feedback loop of the power converter for modulating a feedback impedance of the power converter in response to the modulation signal. The feedback impedance is directly modulated from a lower resistance to a higher resistance when the load condition is reduced from a half/full-load to a no/light-load. The feedback impedance is gradually modulated from a higher resistance to a lower resistance when the load condition is increased from the no/light-load to the half/full-load.
摘要翻译：根据本发明的具有反馈阻抗调制的反馈电路包括比较电路，计数器和开关电阻电路。比较电路接收功率转换器的反馈信号，以将反馈信号与用于产生控制信号的阈值信号进行比较。反馈信号与功率转换器的负载状态相关。计数器耦合到比较电路，并响应于控制信号产生调制信号。开关电阻电路耦合到计数器和功率转换器的反馈回路，用于响应于调制信号调制功率转换器的反馈阻抗。当负载条件从一半/满负载降低到无负载时，反馈阻抗从较低的电阻直接调制到较高的电阻。当负载条件从no / light-load增加到half / full-load时，反馈阻抗从较高的电阻逐渐调制到较低的电阻。

6. 发明申请

US20110305051A1 START-UP CIRCUIT WITH LOW STANDBY POWER LOSS FOR POWER CONVERTERS 有权
标题翻译：功率转换器低功耗的启动电路
公开(公告)号：US20110305051A1
公开(公告)日：2011-12-15
申请号：US13095074
申请日：2011-04-27
申请人： TA-YUNG YANG , WEI-HSUAN HUANG , RUI-HONG LU
发明人： TA-YUNG YANG , WEI-HSUAN HUANG , RUI-HONG LU
IPC分类号： H02M1/00
CPC分类号： H02M1/36
摘要： A start-up circuit with low standby power loss for power converters according to present invention comprises a first diode and a second diode coupled to an input voltage of the power converter. A start-up resistor is coupled to the join of the first diode and the second diode. A high-voltage switch is coupled to the start-up resistor to generate a power source. A control circuit generates a switching signal for switching a transformer. A detection circuit generates a disable signal in response to the input voltage to disable the switching signal. A winding of the transformer is coupled to the power source to generate the power for the power source. The high-voltage switch is turned off to cut off the start-up resistor for saving the power loss once the voltage of the power source is higher than a threshold.
摘要翻译：根据本发明的用于功率转换器的具有低备用功率损耗的启动电路包括耦合到功率转换器的输入电压的第一二极管和第二二极管。启动电阻耦合到第一二极管和第二二极管的连接。高压开关耦合到启动电阻器以产生电源。控制电路产生用于切换变压器的开关信号。检测电路响应于输入电压产生禁止信号以禁用开关信号。变压器的绕组耦合到电源以产生用于电源的电力。一旦电源电压高于阈值，高电压开关就关闭，以切断启动电阻，以节省功率损耗。

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