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1. 发明授权

US09843268B2 Power factor correction device and correcting method thereof 有权
公开(公告)号：US09843268B2
公开(公告)日：2017-12-12
申请号：US14248567
申请日：2014-04-09
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Chung-Ping Ku , Wei-Chi Huang
IPC分类号： G05F5/00 , H02M7/06 , H02M1/42
CPC分类号： H02M7/066 , H02M1/4225 , Y02B70/126
摘要： A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronize phase of alternating current voltage and input current.

2. 发明授权

US09577518B2 Voltage control method and apparatus for achieving and maintaining a targeted voltage on a load 有权
标题翻译：用于实现和维持负载上的目标电压的电压控制方法和装置
公开(公告)号：US09577518B2
公开(公告)日：2017-02-21
申请号：US14459506
申请日：2014-08-14
申请人： Alpha and Omega Semiconductor (Cayman), Ltd
发明人： Kong Soon Ng , Wei-Chi Huang , Jean-Shin Wu
IPC分类号： H02M3/156 , H02M3/158
CPC分类号： H02M3/156 , H02M3/1588
摘要： The present invention discloses a voltage control method. First, the load voltage of the load is divided to generate a feedback voltage. Then, an absolute value of a periodic triangular wave signal is retrieved to generate a positive feedback signal, which and the feedback voltage are then combined to produce a sum signal. The sum signal is then compared with a target voltage and when the sum signal is less than the target voltage, a control signal is generated and thus the load voltage is updated and stabilized using an input voltage. In an alternative method, the feedback voltage and the periodic triangular wave signal are combined to generate a sum signal, which is compared with the target voltage. When sum signal is less than the target voltage, a control signal is generated and thus the load voltage is for updated and stabilized using an input voltage.
摘要翻译：本发明公开了一种电压控制方法。首先，将负载的负载电压分压以产生反馈电压。然后，检索周期性三角波信号的绝对值以产生正反馈信号，然后将该反馈信号和反馈电压组合以产生和信号。然后将和信号与目标电压进行比较，并且当和信号小于目标电压时，产生控制信号，因此使用输入电压更新和稳定负载电压。在替代方法中，反馈电压和周期性三角波信号被组合以产生和目标电压进行比较的和信号。当和信号小于目标电压时，产生控制信号，因此使用输入电压对负载电压进行更新和稳定。

3. 发明授权

US09742276B2 Alternating current injection for constant-on time buck converter—a regulator control method 有权
公开(公告)号：US09742276B2
公开(公告)日：2017-08-22
申请号：US14838058
申请日：2015-08-27
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Kong Soon Ng , Wei-Chi Huang , Jean-Shin Wu
IPC分类号： H02M3/158 , H02M3/156
CPC分类号： H02M3/158 , H02M3/156
摘要： The present invention discloses a voltage control method. At first, the load voltage of the load is divided to generate a feedback voltage. The feedback voltage and a triangular wave of a triangular wave periodic signal, including the positive voltage and negative voltage, are combined to generate a sum signal. The sum signal is compared with a target voltage, and when the sum signal is less than the target voltage signal, a control signal is generated to control the switches to turn on or off. Finally, the switch receives the control signal and accordingly providing an input voltage to update and stabilize the load voltage.

4. 发明申请

US20150372595A1 ALTERNATING CURRENT INJECTION FOR CONSTANT-ON TIME BUCK CONVERTER - A REGULATOR CONTROL METHOD 有权
标题翻译：恒定时间转换器的替代电流注入 - 调节器控制方法
公开(公告)号：US20150372595A1
公开(公告)日：2015-12-24
申请号：US14838058
申请日：2015-08-27
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Kong Soon Ng , Wei-Chi Huang , Jean-Shin Wu
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M3/156
摘要： The present invention discloses a voltage control method. At first, the load voltage of the load is divided to generate a feedback voltage. The feedback voltage and a triangular wave of a triangular wave periodic signal, including the positive voltage and negative voltage, are combined to generate a sum signal. The sum signal is compared with a target voltage, and when the sum signal is less than the target voltage signal, a control signal is generated to control the switches to turn on or off. Finally, the switch receives the control signal and accordingly providing an input voltage to update and stabilize the load voltage.
摘要翻译：本发明公开了一种电压控制方法。首先，将负载的负载电压分压以产生反馈电压。包括正电压和负电压的三角波周期信号的反馈电压和三角波被组合以产生和信号。将和信号与目标电压进行比较，并且当和信号小于目标电压信号时，产生控制信号以控制开关导通或截止。最后，开关接收控制信号，从而提供输入电压来更新和稳定负载电压。

5. 发明申请

US20150244263A1 ALTERNATING CURRENT INJECTION FOR CONSTANT-ON TIME BUCK CONVERTER - A REGULATOR CONTROL METHOD 有权
公开(公告)号：US20150244263A1
公开(公告)日：2015-08-27
申请号：US14458464
申请日：2014-08-13
申请人： Alpha and Omega Semiconductor (Cayman), Ltd
发明人： Kong Soon Ng , Wei-Chi Huang , Jean-Shin Wu
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M3/156
摘要： The present invention discloses a voltage control method. At first, the load voltage of the load is divided to generate a feedback voltage. The feedback voltage and a triangular wave of a triangular wave periodic signal, including the positive voltage and negative voltage, are combined to generate a sum signal. The sum signal is compared with a target voltage, and when the sum signal is less than the target voltage signal, a control signal is generated to control the switches to turn on or off. Finally, the switch receives the control signal and accordingly providing an input voltage to update and stabilize the load voltage.

6. 发明申请

US20150244264A1 VOLTAGE CONTROL METHOD 有权
标题翻译：电压控制方法
公开(公告)号：US20150244264A1
公开(公告)日：2015-08-27
申请号：US14459506
申请日：2014-08-14
申请人： Alpha and Omega Semiconductor (Cayman), Ltd
发明人： Kong Soon Ng , Wei-Chi Huang , Jean-Shin Wu
IPC分类号： H02M3/158
CPC分类号： H02M3/156 , H02M3/1588
摘要： The present invention discloses a voltage control method. First, the load voltage of the load is divided to generate a feedback voltage. Then, an absolute value of a periodic triangular wave signal is retrieved to generate a positive feedback signal, which and the feedback voltage are then combined to produce a sum signal. The sum signal is then compared with a target voltage and when the sum signal is less than the target voltage, a control signal is generated and thus the load voltage is updated and stabilized using an input voltage. In an alternative method, the feedback voltage and the periodic triangular wave signal are combined to generate a sum signal, which is compared with the target voltage. When sum signal is less than the target voltage, a control signal is generated and thus the load voltage is for updated and stabilized using an input voltage.
摘要翻译：本发明公开了一种电压控制方法。首先，将负载的负载电压分压以产生反馈电压。然后，检索周期性三角波信号的绝对值以产生正反馈信号，然后将该反馈信号和反馈电压组合以产生和信号。然后将和信号与目标电压进行比较，并且当和信号小于目标电压时，产生控制信号，因此使用输入电压更新和稳定负载电压。在替代方法中，反馈电压和周期性三角波信号被组合以产生和目标电压进行比较的和信号。当和信号小于目标电压时，产生控制信号，因此使用输入电压对负载电压进行更新和稳定。

7. 发明授权

US09154034B2 Alternating current injection for constant-on time buck converter—a regulator control method 有权
标题翻译：恒定导通时间降压转换器的交流注入 - 调节器控制方法
公开(公告)号：US09154034B2
公开(公告)日：2015-10-06
申请号：US14458464
申请日：2014-08-13
申请人： Alpha and Omega Semiconductor (Cayman), Ltd
发明人： Kong Soon Ng , Wei-Chi Huang , Jean-Shin Wu
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M3/156
摘要： The present invention discloses a voltage control method. At first, the load voltage of the load is divided to generate a feedback voltage. The feedback voltage and a triangular wave of a triangular wave periodic signal, including the positive voltage and negative voltage, are combined to generate a sum signal. The sum signal is compared with a target voltage, and when the sum signal is less than the target voltage signal, a control signal is generated to control the switches to turn on or off. Finally, the switch receives the control signal and accordingly providing an input voltage to update and stabilize the load voltage.
摘要翻译：本发明公开了一种电压控制方法。首先，将负载的负载电压分压以产生反馈电压。包括正电压和负电压的三角波周期信号的反馈电压和三角波被组合以产生和信号。将和信号与目标电压进行比较，并且当和信号小于目标电压信号时，产生控制信号以控制开关导通或截止。最后，开关接收控制信号，从而提供输入电压来更新和稳定负载电压。

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