公开(公告)号：US20130187566A1

公开(公告)日：2013-07-25

申请号：US13543881

申请日：2012-07-08

申请人： TA-CHING HSU

发明人： TA-CHING HSU

IPC分类号： H05B37/02 ,  G05F1/00

CPC分类号： H05B33/0818 ,  H02M3/155 ,  Y02B20/346

摘要： A conversion control circuit for controlling the operation of a power transistor is disclosed. The conversion control circuit includes a voltage-regulating switch and a control unit. One end of the voltage-regulating switch connects to an external voltage input terminal while another end connects to a voltage-regulating capacitor. The conversion control circuit converts an input voltage inputted from the external voltage input terminal into a power voltage. The power voltage is for supplying operating power to the conversion control circuit. The control unit receives a feedback voltage signal to generate a voltage-regulating pulse signal and a turn-on pulse signal, which are used for controlling the operations of the voltage-regulating switch and the power transistor, respectively and for defining a charging period for charging the voltage-regulating capacitor. A converter including the described conversion control circuit is also disclosed.

摘要翻译： 公开了一种用于控制功率晶体管的操作的转换控制电路。 转换控制电路包括电压调节开关和控制单元。 电压调节开关的一端连接到外部电压输入端子，另一端连接电压调节电容器。 转换控制电路将从外部电压输入端子输入的输入电压转换为电源电压。 电源电压用于向转换控制电路提供工作电源。 控制单元接收反馈电压信号以产生分别用于控制电压调节开关和功率晶体管的操作的电压调节脉冲信号和导通脉冲信号，并且用于定义用于 对调压电容充电。 还公开了包括所描述的转换控制电路的A转换器。

公开(公告)号：US20120020123A1

公开(公告)日：2012-01-26

申请号：US13092944

申请日：2011-04-23

申请人： TA-CHING HSU

发明人： TA-CHING HSU

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  H02M1/32 ,  Y02B70/1475

摘要： A predictive synchronous rectification controller for controlling at least one synchronous rectification switch is provided. The synchronous rectification controller has a ramp generator, a peak sampling unit, and an output control unit. The ramp generator receives a synchronous signal and generates a ramp signal accordingly. The peak sampling unit generates a predicted reference voltage signal by retrieving a peak voltage of the ramp signal. The output control unit compares the ramp signal with the predicted reference voltage signal to generate a synchronous rectification control signal to control a conducting state of the switch.

摘要翻译： 提供一种用于控制至少一个同步整流开关的预测同步整流控制器。 同步整流控制器具有斜坡发生器，峰值采样单元和输出控制单元。 斜坡发生器接收同步信号并相应产生斜坡信号。 峰值采样单元通过检索斜坡信号的峰值电压来产生预测参考电压信号。 输出控制单元将斜坡信号与预测参考电压信号进行比较，以产生同步整流控制信号，以控制开关的导通状态。

公开(公告)号：US07924581B2

公开(公告)日：2011-04-12

申请号：US12219092

申请日：2008-07-16

申请人： Ta-Ching Hsu

发明人： Ta-Ching Hsu

IPC分类号： H02M1/14 ,  H02M7/10

CPC分类号： H02M1/36 ,  Y10S323/901 ,  Y10S323/908

摘要： A high voltage start-up circuit with constant current control applied to a switching mode power converter is provided. The high voltage start-up circuit includes a high voltage junction transistor, a control transistor, a current detecting resistor and a bias resistor. The drain of the junction transistor is connected to a high power supply, the gate of the junction transistor is connected to the drain of the control transistor, and the source of the junction transistor is connected to the current detecting resistor. The voltage drop crossing the current detecting resistor is kept constant to have the junction transistor output a constant current. The bias resistor which is connected between the gate of the junction transistor and the output end of the high voltage start-up circuit has the gate to source bias voltage of the junction transistor kept constant to output constant current.

摘要翻译： 提供了一种具有恒定电流控制的高压启动电路，用于开关模式功率转换器。 高压启动电路包括高压结晶体管，控制晶体管，电流检测电阻和偏置电阻。 结晶体管的漏极连接到高电源，结型晶体管的栅极连接到控制晶体管的漏极，结型晶体管的源极连接到电流检测电阻。 与电流检测电阻交叉的电压降保持恒定，使结晶体管输出恒定电流。 连接在结型晶体管的栅极和高电压启动电路的输出端之间的偏置电阻具有保持恒定的结晶体管的栅极 - 源极偏置电压以输出恒定电流。

公开(公告)号：US07889521B2

公开(公告)日：2011-02-15

申请号：US12073581

申请日：2008-03-07

申请人： Ta-Ching Hsu

发明人： Ta-Ching Hsu

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： A three-pin integrated synchronous rectifier is the synchronous rectifier chip where the quantity of connection pins is the smallest possible quantity. The three-pin integrated synchronous rectifier uses a control pin to receive a control signal used as a power bias voltage and a synchronous pulse to make the synchronous rectifier chip operate normally. The control signal is obtained from the output pin of an auxiliary winding via a diode. The other pins are respectively the drain pin and the source pin of an internal power transistor and are connected with the output winding and the voltage output terminal for transmitting the power of the transformer to supply current for the loading.

摘要翻译： 三针集成同步整流器是同步整流器芯片，其中连接引脚的数量是可能的最小量。 三针集成同步整流器使用控制引脚接收用作功率偏置电压和同步脉冲的控制信号，使同步整流器芯片正常工作。 控制信号通过二极管从辅助绕组的输出引脚获得。 另一个引脚分别是内部功率晶体管的漏极引脚和源极引脚，并与输出绕组和电压输出端子连接，用于传输变压器的电源以提供负载的电流。

公开(公告)号：US20110032732A1

公开(公告)日：2011-02-10

申请号：US12461178

申请日：2009-08-04

申请人： Ta-Ching Hsu

发明人： Ta-Ching Hsu

IPC分类号： H02M3/335

CPC分类号： H02M3/33561

摘要： A flyback power converter with multiple outputs has a transformer, a low-voltage output circuit, a high-voltage output circuit, and a secondary side post regulator circuit is provided. The transformer has a first secondary winding and a second secondary winding. The low-voltage output circuit has a low-voltage output capacitor and a rectifier unit, and is coupled to the first secondary winding to generate a low voltage output. The high-voltage output circuit has a high-voltage output switch and a high-voltage output capacitor, and is coupled to the second secondary winding to generate a high voltage output. The secondary side post regulator circuit adjusts on-time of the high-voltage output switch according to a feedback signal to have the energy stored in the high-voltage capacitor transmitted to the low-voltage capacitor to lower down the voltage level of the high output voltage.

摘要翻译： 具有多个输出的反激式功率转换器具有变压器，低压输出电路，高压输出电路和次级侧稳压器电路。 变压器具有第一次级绕组和第二次级绕组。 低压输出电路具有低压输出电容器和整流器单元，并且耦合到第一次级绕组以产生低电压输出。 高压输出电路具有高压输出开关和高压输出电容器，并且耦合到第二次级绕组以产生高电压输出。 次级侧稳压器电路根据反馈信号调节高电压输出开关的导通时间，将存储在高压电容器中的能量传输到低压电容器，以降低高输出电压 电压。

公开(公告)号：US20090267577A1

公开(公告)日：2009-10-29

申请号：US12219092

申请日：2008-07-16

申请人： Ta-Ching Hsu

发明人： Ta-Ching Hsu

IPC分类号： G05F1/00

CPC分类号： H02M1/36 ,  Y10S323/901 ,  Y10S323/908

摘要： A high voltage start-up circuit with constant current control applied to a switching mode power converter is provided. The high voltage start-up circuit includes a high voltage junction transistor, a control transistor, a current detecting resistor and a bias resistor. The drain of the junction transistor is connected to a high power supply, the gate of the junction transistor is connected to the drain of the control transistor, and the source of the junction transistor is connected to the current detecting resistor. The voltage drop crossing the current detecting resistor is kept constant to have the junction transistor output a constant current. The bias resistor which is connected between the gate of the junction transistor and the output end of the high voltage start-up circuit has the gate to source bias voltage of the junction transistor kept constant to output constant current.

摘要翻译： 提供了一种具有恒定电流控制的高压启动电路，用于开关模式功率转换器。 高压启动电路包括高压结晶体管，控制晶体管，电流检测电阻和偏置电阻。 结晶体管的漏极连接到高电源，结型晶体管的栅极连接到控制晶体管的漏极，结型晶体管的源极连接到电流检测电阻。 与电流检测电阻交叉的电压降保持恒定，使结晶体管输出恒定电流。 连接在结型晶体管的栅极和高电压启动电路的输出端之间的偏置电阻具有保持恒定的结晶体管的栅极 - 源极偏置电压以输出恒定电流。

公开(公告)号：US08576587B2

公开(公告)日：2013-11-05

申请号：US13092944

申请日：2011-04-23

申请人： Ta-Ching Hsu

发明人： Ta-Ching Hsu

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  H02M1/32 ,  Y02B70/1475

摘要： A predictive synchronous rectification controller for controlling at least one synchronous rectification switch is provided. The synchronous rectification controller has a ramp generator, a peak sampling unit, and an output control unit. The ramp generator receives a synchronous signal and generates a ramp signal accordingly. The peak sampling unit generates a predicted reference voltage signal by retrieving a peak voltage of the ramp signal. The output control unit compares the ramp signal with the predicted reference voltage signal to generate a synchronous rectification control signal to control a conducting state of the switch.

摘要翻译： 提供一种用于控制至少一个同步整流开关的预测同步整流控制器。 同步整流控制器具有斜坡发生器，峰值采样单元和输出控制单元。 斜坡发生器接收同步信号并相应产生斜坡信号。 峰值采样单元通过检索斜坡信号的峰值电压来产生预测参考电压信号。 输出控制单元将斜坡信号与预测参考电压信号进行比较，以产生同步整流控制信号，以控制开关的导通状态。

公开(公告)号：US20130094249A1

公开(公告)日：2013-04-18

申请号：US13459449

申请日：2012-04-30

申请人： TA-CHING HSU

发明人： TA-CHING HSU

IPC分类号： H02M3/335 ,  H02H7/125 ,  H02M7/217

CPC分类号： H02M1/08 ,  H02M3/33592 ,  Y02B70/1475

摘要： A secondary side synchronous rectification control circuit is disclosed. The control circuit includes an inverted amplifier, a first comparator, and a driving unit. The inverted amplifier has an input end for receiving a drain source voltage signal from a synchronous rectification transistor and outputting an inverted amplification signal. The first comparator receives the inverted amplification signal and a first reference voltage for outputting a first comparison signal. The driving unit receives the first comparison signal and generates a driving signal according to the first comparison signal, for controlling the conduction status of the synchronous rectification transistor. The drain source voltage of the synchronous rectification transistor in the present invention is inverted amplified by an inverted amplifier, and it is connected to a comparator for generating the driving signal. The errors and defects of the turn-off timing of the driving signal may be solved and eliminated.

摘要翻译： 公开了一种二次侧同步整流控制电路。 控制电路包括反相放大器，第一比较器和驱动单元。 反相放大器具有用于从同步整流晶体管接收漏源电压信号并输出​​反相放大信号的输入端。 第一比较器接收反相放大信号和用于输出第一比较信号的第一参考电压。 驱动单元接收第一比较信号并根据第一比较信号产生用于控制同步整流晶体管的导通状态的驱动信号。 本发明的同步整流晶体管的漏源电压由反相放大器反相放大，并连接到用于产生驱动信号的比较器。 可以解决和消除驱动信号的关断定时的误差和缺陷。

公开(公告)号：US09537418B2

公开(公告)日：2017-01-03

申请号：US14509053

申请日：2014-10-08

申请人： Ta-Ching Hsu ,  Chung-Ming Leng

发明人： Ta-Ching Hsu ,  Chung-Ming Leng

IPC分类号： H02M1/088 ,  H02M7/06 ,  H02M1/32

CPC分类号： H02M7/06 ,  H02M1/088 ,  H02M2001/322

摘要： A power conversion apparatus is provided. The power conversion apparatus receives an AC input power by an input side and includes a capacitor, an AC-to-DC conversion unit and a discharge unit. The capacitor is connected with the input side. The AC-to-DC conversion unit is coupled to the input side, and configured to convert the AC input power after receiving the AC input power to generate a DC output power. The discharge unit is coupled to the capacitor and has at least two switch elements. The discharge unit enables the at least two switch elements when supply of the AC input power is interrupted, such that one of a first discharge path and a second discharge path formed by the at least two switch elements is taken to discharge or drain the energy stored in the capacitor.

摘要翻译： 提供电力转换装置。 电力转换装置通过输入侧接收交流输入电力，并且包括电容器，AC-DC转换单元和放电单元。 电容器与输入端连接。 AC到DC转换单元耦合到输入侧，并且被配置为在接收到AC输入功率之后转换AC输入功率以产生DC输出功率。 放电单元耦合到电容器并且具有至少两个开关元件。 当AC输入功率的供给被中断时，放电单元使能至少两个开关元件，使得由至少两个开关元件形成的第一放电路径和第二放电路径中的一个被采取放电或排出存储的能量 在电容器中。

公开(公告)号：US08988053B2

公开(公告)日：2015-03-24

申请号：US13607803

申请日：2012-09-10

申请人： Ta-Ching Hsu

发明人： Ta-Ching Hsu

IPC分类号： H02M3/158 ,  H02M1/00

CPC分类号： H02M3/1584 ,  H02M2001/0009 ,  H02M2003/1586

摘要： A multiphase DC-to-DC converter is disclosed herein, which includes at least one DC-to-DC converting module. Each DC-to-DC converting module at least includes a first output inductor, a second output inductor and a current detector. The current detector is configured for detecting currents pass through the first output inductor and second output inductor. The current detector includes a first resistance, a second resistance, a first capacitor, a second capacitor, and a third resistance. The third resistance is directly or indirectly coupled between the first capacitor and a load circuit, and directly or indirectly coupled between the second capacitor and the load circuit, such that when the first capacitor is charged, a portion of the current charging the first capacitor passes through the second capacitor.

摘要翻译： 本文公开了一种多相DC-DC转换器，其包括至少一个DC-DC转换模块。 每个DC-DC转换模块至少包括第一输出电感器，第二输出电感器和电流检测器。 电流检测器被配置用于检测通过第一输出电感器和第二输出电感器的电流。 电流检测器包括第一电阻，第二电阻，第一电容，第二电容和第三电阻。 第三电阻直接或间接耦合在第一电容器和负载电路之间，并且直接或间接耦合在第二电容器和负载电路之间，使得当第一电容器被充电时，对第一电容器充电的一部分电流通过 通过第二个电容。