公开(公告)号：US06233163B1

公开(公告)日：2001-05-15

申请号：US09688600

申请日：2000-10-16

申请人： Song-Yi Lin ,  Kuang-Chih Shih

发明人： Song-Yi Lin ,  Kuang-Chih Shih

IPC分类号： H02M112

CPC分类号： H02M7/53871

摘要： An automatic balance adjusting device for an AC power supply is provided between the AC current output terminals of an AC power supply and its feedback control circuit. The device uses a two-level filter to extract the DC component of an AC output signal. The DC error is accumulated and amplified by an integrator and converted from a voltage form to a current form. Through a photo coupler designed for the separation purpose, the error signal is sent back to the feedback control circuit to perform compensation. Thus, the device can achieve the purpose of automatically balancing the positive and negative half-cycle waveform of the output signal.

摘要翻译： 在AC电源的AC电流输出端子与其反馈控制电路之间设置有用于AC电源的自动平衡调整装置。 该器件使用两电平滤波器来提取交流输出信号的直流分量。 直流误差由积分器积累和放大，并从电压形式转换为当前形式。 通过设计用于分离目的的光耦合器，将误差信号发送回反馈控制电路进行补偿。 因此，器件可以达到自动平衡输出信号的正半周期和负半周期波形的目的。

公开(公告)号：US20070121357A1

公开(公告)日：2007-05-31

申请号：US11289587

申请日：2005-11-30

申请人： Kuang-Chih Shih

发明人： Kuang-Chih Shih

IPC分类号： H02M7/538

CPC分类号： H02J9/00 ,  G06F1/30 ,  Y02P80/112

摘要： An apparatus for a power supply with brownout protection and the method thereof are proposed. As a brownout condition occurs, the apparatus informs at least one microprocessor to process the shutdown process timely. The apparatus includes a power factor correction (PFC) circuit, and a bus capacitor generating a bus voltage by receiving an input voltage via the PFC circuit, and a PWM circuit generating multiple output voltages for the microprocessor, and a supervisor circuit generating a power-good signal in response to a proportional bus voltage, and a brownout circuit for disabling the boosting operation of the PFC circuit under a brownout condition. When the boosting operation is disabled, the bus voltage starts to fall. As the proportional bus voltage is lower than a threshold voltage, the supervisor circuit generates the power-good signal. Therefore, the microprocessor can process the shutdown procedure timely.

摘要翻译： 提出了一种具有欠压保护的电源装置及其方法。 当发生掉电状况时，设备通知至少一个微处理器及时处理关机过程。 该装置包括功率因数校正（PFC）电路和通过经由PFC电路接收输入电压而产生总线电压的总线电容器，以及为微处理器产生多个输出电压的PWM电路，以及产生电源电压的监控电路， 响应于比例总线电压的良好信号，以及用于在掉电条件下禁止PFC电路的升压操作的掉电电路。 当升压操作被禁止时，总线电压开始下降。 当比例总线电压低于阈值电压时，监控电路产生电源良好信号。 因此，微处理器可以及时处理关机程序。

公开(公告)号：US07368895B2

公开(公告)日：2008-05-06

申请号：US11289587

申请日：2005-11-30

申请人： Kuang-Chih Shih

发明人： Kuang-Chih Shih

IPC分类号： G05F1/571

CPC分类号： H02J9/00 ,  G06F1/30 ,  Y02P80/112

摘要： An apparatus for a power supply with brownout protection and the method thereof are proposed. As a brownout condition occurs, the apparatus informs at least one microprocessor to process the shutdown process timely. The apparatus includes a power factor correction (PFC) circuit, and a bus capacitor generating a bus voltage by receiving an input voltage via the PFC circuit, and a PWM circuit generating multiple output voltages for the microprocessor, and a supervisor circuit generating a power-good signal in response to a proportional bus voltage, and a brownout circuit for disabling the boosting operation of the PFC circuit under a brownout condition. When the boosting operation is disabled, the bus voltage starts to fall. As the proportional bus voltage is lower than a threshold voltage, the supervisor circuit generates the power-good signal. Therefore, the microprocessor can process the shutdown procedure timely.

摘要翻译： 提出了一种具有欠压保护的电源装置及其方法。 当发生掉电状况时，设备通知至少一个微处理器及时处理关机过程。 该装置包括功率因数校正（PFC）电路和通过经由PFC电路接收输入电压而产生总线电压的总线电容器，以及为微处理器产生多个输出电压的PWM电路，以及产生电源电压的监控电路， 响应于比例总线电压的良好信号，以及用于在掉电条件下禁止PFC电路的升压操作的掉电电路。 当升压操作被禁止时，总线电压开始下降。 当比例总线电压低于阈值电压时，监控电路产生电源良好信号。 因此，微处理器可以及时处理关机程序。

公开(公告)号：US07313004B1

公开(公告)日：2007-12-25

申请号：US11614971

申请日：2006-12-21

申请人： Ta-Yung Yang ,  Chien-Yuan Lin ,  Kuang-Chih Shih ,  Wei-Ting Wang

发明人： Ta-Yung Yang ,  Chien-Yuan Lin ,  Kuang-Chih Shih ,  Wei-Ting Wang

IPC分类号： H02M3/335

CPC分类号： H02M3/3376 ,  H02M3/33523 ,  Y02B70/1433

摘要： An integrated control circuit for a resonant power converter includes a minimum-frequency programming circuit connected a first resistor to program a minimum switching frequency of the power converter. A feedback circuit is coupled to a feedback terminal to receive a feedback signal for generating an adjustment signal. A maximum-frequency programming circuit connects a second resistor to determine a maximum switching frequency in response to the adjustment signal. An oscillator is coupled to the minimum-frequency programming circuit and the maximum-frequency programming circuit to generate an oscillation signal for determining the switching frequency of the power converter. A feed-forward circuit is connected to a feed-forward terminal to receive a feed-forward signal represents the input voltage of the power converter. The switching frequency is increased in response to decrease of the feedback signal, and the switching frequency is increased in response to the increase of the feed-forward signal.

摘要翻译： 用于谐振功率转换器的集成控制电路包括连接有第一电阻器以编程功率转换器的最小开关频率的最小频率编程电路。 反馈电路耦合到反馈端以接收用于产生调整信号的反馈信号。 最大频率编程电路连接第二电阻器以响应于调整信号确定最大开关频率。 振荡器耦合到最小频率编程电路和最大频率编程电路，以产生用于确定功率转换器的开关频率的振荡信号。 前馈电路连接到前馈端子以接收代表功率转换器的输入电压的前馈信号。 响应于反馈信号的减小，开关频率增加，并且开关频率响应于前馈信号的增加而增加。