公开(公告)号：US09705413B2

公开(公告)日：2017-07-11

申请号：US14832469

申请日：2015-08-21

申请人： Infineon Technologies AG

发明人： Guoxing Zhang ,  Mingping Mao

IPC分类号： H02M3/335 ,  H02M1/00 ,  H02M3/337

CPC分类号： H02M3/33569 ,  H02M3/33507 ,  H02M3/33546 ,  H02M3/3376 ,  H02M2001/0025 ,  H02M2001/0035 ,  Y02B70/1433 ,  Y02B70/16

摘要： In accordance with an embodiment, a method of controlling a switched-mode power includes generating a feedback signal proportional to an output of the switched-mode power supply, and operating the switched-mode power supply in a normal mode. If the feedback signal crosses a first threshold, the switched-mode power operates in a second operating mode. In the first operating mode the pulse modulated signal is adjusted to regulate a feedback signal to a first signal level, and in the second operating mode, a dead-time of the pulse modulated signal is adjusted to signal to regulate a feedback signal to a second signal level different from the first signal level. The method further includes driving a switch of the switched-mode power supply with the pulse modulated signal.

公开(公告)号：US20150357927A1

公开(公告)日：2015-12-10

申请号：US14832469

申请日：2015-08-21

申请人： Infineon Technologies AG

发明人： Guoxing Zhang ,  Mingping Mao

IPC分类号： H02M3/335

CPC分类号： H02M3/33569 ,  H02M3/33507 ,  H02M3/33546 ,  H02M3/3376 ,  H02M2001/0025 ,  H02M2001/0035 ,  Y02B70/1433 ,  Y02B70/16

摘要： In accordance with an embodiment, a method of controlling a switched-mode power includes generating a feedback signal proportional to an output of the switched-mode power supply, and operating the switched-mode power supply in a normal mode. If the feedback signal crosses a first threshold, the switched-mode power operates in a second operating mode. In the first operating mode the pulse modulated signal is adjusted to regulate a feedback signal to a first signal level, and in the second operating mode, a dead-time of the pulse modulated signal is adjusted to signal to regulate a feedback signal to a second signal level different from the first signal level. The method further includes driving a switch of the switched-mode power supply with the pulse modulated signal.

摘要翻译： 根据实施例，控制开关模式功率的方法包括产生与开关模式电源的输出成比例的反馈信号，并以正常模式操作开关模式电源。 如果反馈信号跨越第一阈值，则开关模式功率在第二操作模式中操作。 在第一操作模式中，调整脉冲调制信号以将反馈信号调节到第一信号电平，并且在第二操作模式中，将脉冲调制信号的死区时间调整为信号以将反馈信号调节到第二信号 信号电平与第一信号电平不同。 该方法还包括用脉冲调制信号驱动开关式电源的开关。