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    • 1. 发明申请
    • Power supply having an extending hold-up time controlling unit
    • 电源具有延长的保持时间控制单元
    • US20090097286A1
    • 2009-04-16
    • US12081251
    • 2008-04-14
    • Wei-Liang LinShun-Te Chang
    • Wei-Liang LinShun-Te Chang
    • H02J1/00
    • H02M1/4208H02M3/1584H02M2001/007H02M2001/0096Y02B70/126Y02P80/112
    • A hold-up time extension controlling device for a power supply, that has a power factor correction circuit, a hold-up time extension circuit, a hold-up time controlling circuit, a storage capacitor and a DC to DC converter. The hold-up time extension controlling device has a switch and an auxiliary capacitor. When an AC power source is normal, the switch is controlled to turn on according to the power factor correction circuit to make the auxiliary capacitor connecting to the storage capacitor in parallel to averagely have a ripple current. When the AC power source is interrupted, the switch is controlled to turn off. At the time, the hold-up time extension circuit obtains a storage power of the auxiliary capacitor and then output to the DC to DC converter to keep the voltage of the storage capacitor at a preset voltage for a long time.
    • 一种用于电源的保持时间延长控制装置,具有功率因数校正电路,保持时间延长电路,保持时间控制电路,存储电容器和DC-DC转换器。 保持时间延长控制装置具有开关和辅助电容器。 当交流电源正常时,根据功率因数校正电路将开关控制为开启,使辅助电容并联连接到存储电容平均具有纹波电流。 当交流电源中断时,开关被控制为关闭。 此时,保持时间延长电路获得辅助电容器的存储电力,然后输出到DC-DC转换器,以将存储电容器的电压长时间保持在预设电压。
    • 2. 发明申请
    • AC TO DC POWER CONVERTER WITH HOLD-UP TIME FUNCTION
    • 交流到直流电源转换器,具有保持时间功能
    • US20100014330A1
    • 2010-01-21
    • US12403258
    • 2009-03-12
    • Shun-Te ChangWei-Liang Lin
    • Shun-Te ChangWei-Liang Lin
    • H02M7/04
    • H02M7/2176H02M1/4225Y02B70/126Y02P80/112
    • An AC to DC power converter with hold up time function has a charging switch and a mode switch. The charging switch is connected between an output capacitor of a PFC controlling circuit and an energy-storage capacitor. The mode switch is connected between the energy-storage capacitor and an input of the PFC controlling circuit. The charging and mode switches are controlled by a PFC controller. When AC power is normal, the charging switch turns on and mode switch turns off. Meanwhile, the energy-storage capacitor and the output capacitor are connected in parallel to store energy in the energy-storage capacitor. When the AC power source is interrupted, the charging switch turns off and mode switch turns on. Therefore, the energy-storage capacitor is disconnected from the output capacitor. The PFC circuit obtains power from the energy-storage capacitor and continuous to supply an output voltage for a while.
    • 具有保持时间功能的交流直流电源转换器具有充电开关和模式开关。 充电开关连接在PFC控制电路的输出电容器和储能电容器之间。 模式开关连接在储能电容器和PFC控制电路的输入端之间。 充电和模式开关由PFC控制器控制。 交流电源正常时,充电开关打开,模式开关关闭。 同时,储能电容器和输出电容器并联连接以将能量存储在储能电容器中。 当交流电源中断时,充电开关关闭,模式开关打开。 因此,储能电容器与输出电容器断开。 PFC电路从储能电容器获得电力并连续供给一段时间的输出电压。
    • 3. 发明授权
    • Power supply having an extending hold-up time controlling unit
    • 电源具有延长的保持时间控制单元
    • US07729143B2
    • 2010-06-01
    • US12081251
    • 2008-04-14
    • Wei-Liang LinShun-Te Chang
    • Wei-Liang LinShun-Te Chang
    • H02J1/00
    • H02M1/4208H02M3/1584H02M2001/007H02M2001/0096Y02B70/126Y02P80/112
    • A hold-up time extension controlling device for a power supply, that has a power factor correction circuit, a hold-up time extension circuit, a hold-up time controlling circuit, a storage capacitor and a DC to DC converter. The hold-up time extension controlling device has a switch and an auxiliary capacitor. When an AC power source is normal, the switch is controlled to turn on according to the power factor correction circuit to make the auxiliary capacitor connecting to the storage capacitor in parallel to averagely have a ripple current. When the AC power source is interrupted, the switch is controlled to turn off. At the time, the hold-up time extension circuit obtains a storage power of the auxiliary capacitor and then output to the DC to DC converter to keep the voltage of the storage capacitor at a preset voltage for a long time.
    • 一种用于电源的保持时间延长控制装置,具有功率因数校正电路,保持时间延长电路,保持时间控制电路,存储电容器和DC-DC转换器。 保持时间延长控制装置具有开关和辅助电容器。 当交流电源正常时,根据功率因数校正电路将开关控制为开启,使辅助电容并联连接到存储电容平均具有纹波电流。 当交流电源中断时,开关被控制为关闭。 此时,保持时间延长电路获得辅助电容器的存储电力,然后输出到DC-DC转换器,以将存储电容器的电压长时间保持在预设电压。
    • 4. 发明授权
    • AC to DC power converter using an energy-storage capacitor for providing hold-up time function
    • AC至DC电源转换器,使用储能电容器提供保持时间功能
    • US08134849B2
    • 2012-03-13
    • US12403258
    • 2009-03-12
    • Shun-Te ChangWei-Liang Lin
    • Shun-Te ChangWei-Liang Lin
    • H02M7/217
    • H02M7/2176H02M1/4225Y02B70/126Y02P80/112
    • An AC to DC power converter with hold up time function has a charging switch and a mode switch. The charging switch is connected between an output capacitor of a PFC controlling circuit and an energy-storage capacitor. The mode switch is connected between the energy-storage capacitor and an input of the PFC controlling circuit. The charging and mode switches are controlled by a PFC controller. When AC power is normal, the charging switch turns on and mode switch turns off. Meanwhile, the energy-storage capacitor and the output capacitor are connected in parallel to store energy in the energy-storage capacitor. When the AC power source is interrupted, the charging switch turns off and mode switch turns on. Therefore, the energy-storage capacitor is disconnected from the output capacitor. The PFC circuit obtains power from the energy-storage capacitor and continuous to supply an output voltage for a while.
    • 具有保持时间功能的交流直流电源转换器具有充电开关和模式开关。 充电开关连接在PFC控制电路的输出电容器和储能电容器之间。 模式开关连接在储能电容器和PFC控制电路的输入端之间。 充电和模式开关由PFC控制器控制。 交流电源正常时,充电开关打开,模式开关关闭。 同时,储能电容器和输出电容器并联连接以将能量存储在储能电容器中。 当交流电源中断时,充电开关关闭,模式开关打开。 因此,储能电容器与输出电容器断开。 PFC电路从储能电容器获得电力并连续供给一段时间的输出电压。
    • 5. 发明申请
    • Power supply having a two-way DC to DC converter
    • 电源具有双向DC到DC转换器
    • US20100165673A1
    • 2010-07-01
    • US12459428
    • 2009-07-01
    • Shun-Te ChangWei-Liang Lin
    • Shun-Te ChangWei-Liang Lin
    • H02M3/335
    • H02M1/10
    • A power supply having a two-way DC to DC converter has an AC to DC converter and a two-way DC to DC converter. When an AC power is input to the AC to DC converter, the AC to DC converter transforms the AC power to a middle level DC power and the two-way DC to DC converter transforms the middle level DC power to a low level DC power. When the AC power is unavailable and the two-way DC to DC converter obtains an external DC power, the two-way DC to DC converter transforms the external DC power to the middle level DC power. Therefore, if the power supply obtains the external DC power, the power supply can still output the middle level DC power even the AC power is unavailable.
    • 具有双向DC-DC转换器的电源具有AC至DC转换器和双向DC-DC转换器。 当交流电源输入到交流直流转换器时,交流 - 直流转换器将交流电转换为中间电平的直流电,双向直流 - 直流转换器将中间级直流电转换成低电平的直流电。 当交流电源不可用,双向DC-DC转换器获得外部直流电源时,双向直流 - 直流转换器将外部直流电源转换为中间级直流电源。 因此,如果电源获得外部直流电源,即使交流电不可用,电源仍然可以输出中间级直流电源。
    • 6. 发明授权
    • Power supply having a two-way DC to DC converter
    • 电源具有双向DC到DC转换器
    • US08243472B2
    • 2012-08-14
    • US12459428
    • 2009-07-01
    • Shun-Te ChangWei-Liang Lin
    • Shun-Te ChangWei-Liang Lin
    • H02M3/335
    • H02M1/10
    • A power supply having a two-way DC to DC converter has an AC to DC converter and a two-way DC to DC converter. When an AC power is input to the AC to DC converter, the AC to DC converter transforms the AC power to a middle level DC power and the two-way DC to DC converter transforms the middle level DC power to a low level DC power. When the AC power is unavailable and the two-way DC to DC converter obtains an external DC power, the two-way DC to DC converter transforms the external DC power to the middle level DC power. Therefore, if the power supply obtains the external DC power, the power supply can still output the middle level DC power even the AC power is unavailable.
    • 具有双向DC-DC转换器的电源具有AC至DC转换器和双向DC-DC转换器。 当交流电源输入到交流直流转换器时,交流 - 直流转换器将交流电转换为中间电平的直流电,双向直流 - 直流转换器将中间级直流电转换成低电平的直流电。 当交流电源不可用,双向DC-DC转换器获得外部直流电源时,双向直流 - 直流转换器将外部直流电源转换为中间级直流电源。 因此,如果电源获得外部直流电源,即使交流电不可用,电源仍然可以输出中间级直流电源。
    • 8. 发明授权
    • Synchronous rectifyier controlled by a current transformer
    • 同步整流器由电流互感器控制
    • US06813166B1
    • 2004-11-02
    • US10457313
    • 2003-06-09
    • Shun-Te ChangChing-Feng Yang
    • Shun-Te ChangChing-Feng Yang
    • H02M3335
    • H02M3/33592Y02B70/1475
    • A power converter with synchronous rectifying through the control of a current transformer is disclosed. The basic architecture of the power converter includes a flyback transformer (10), a switch controller (20) and a current transformer (30). The secondary winding of the flyback transformer (10) is connected to the primary winding of the current transformer (30) used to control the switch controller (20). The primary winding of the current transformer (30) is connected to a synchronous rectifying switch (Q7). If a current change occurs on the secondary winding of the flyback transformer (10), the current transformer (30) detects the phase change and enables the switch controller (20) to switch off the synchronous rectifying switch (Q7). The current transformer (30) turns off the synchronous rectifying switch (Q7) anticipatorily in the continuous current output mode to prevent any power loss from crossovers.
    • 公开了一种通过电流互感器的控制进行同步整流的功率转换器。 功率转换器的基本架构包括回扫变压器(10),开关控制器(20)和电流互感器(30)。 回扫变压器(10)的次级绕组连接到用于控制开关控制器(20)的电流互感器(30)的初级绕组。 电流互感器(30)的初级绕组连接到同步整流开关(Q7)。 如果在回扫变压器(10)的次级绕组上发生电流变化,则电流互感器(30)检测相变,使开关控制器(20)能够关断同步整流开关(Q7)。 电流互感器(30)在连续电流输出模式下预期关闭同步整流开关(Q7),以防止分流器发生功率损耗。
    • 10. 发明申请
    • Synchronous voltage modulation circuit for resonant power converter
    • 谐振功率转换器同步电压调制电路
    • US20070297198A1
    • 2007-12-27
    • US11654227
    • 2007-01-16
    • Shun-Te Chang
    • Shun-Te Chang
    • H02M3/335
    • H02M3/337H02M3/33561Y02B70/1433
    • A synchronous voltage modulation circuit for resonance power converter has a resonance current extracting unit and at least one duty cycle modulation circuit. The resonance current extracting unit extracts the resonance current of the transformer for each duty cycle modulation circuit. The duty cycle modulation circuit controls the conduction period of the electronic switch on the secondary side of the transformer according to the power usage of the load connected to the power output and the resonance frequency of the resonance current on the transformer detected by the resonance current extracting unit. The conduction period increases or decreases symmetrically with respect to the central axis. The power converter output of the resonance power converter converter forms a closed loop control, thereby providing stable power to its load.
    • 谐振功率转换器的同步电压调制电路具有谐振电流提取单元和至少一个占空比调制电路。 谐振电流提取单元为每个占空比调制电路提取变压器的谐振电流。 占空比调制电路根据连接到功率输出的负载的功率利用和由谐振电流提取检测到的变压器上的谐振电流的谐振频率来控制变压器次级侧的电子开关的导通周期 单元。 导通周期相对于中心轴线对称地增加或减小。 谐振功率转换器转换器的功率转换器输出形成闭环控制,从而为其负载提供稳定的功率。