公开(公告)号：US07960952B2

公开(公告)日：2011-06-14

申请号：US12148314

申请日：2008-04-18

申请人： Gwan-Bon Koo ,  Jin-Tae Kim ,  Yoo-Woong Hwang ,  Kyung Oun Jang ,  Jin-Woo Moon ,  Sang-Hyun Lee

发明人： Gwan-Bon Koo ,  Jin-Tae Kim ,  Yoo-Woong Hwang ,  Kyung Oun Jang ,  Jin-Woo Moon ,  Sang-Hyun Lee

IPC分类号： G05F1/59 ,  H02M3/335

CPC分类号： H02M3/33523 ,  Y10T307/747

摘要： A switching mode power supply and a switch thereof are provided. The switch includes a plurality of first transistors, and a second transistor that is turned on/off by a control signal that is equal to that of the plurality of first transistors and in which a second current corresponding to a first current flowing to the plurality of first transistors flows, wherein a ratio of the first current to the second current sequentially changes from a time point at which the second transistor is turned on. Therefore, a switching mode power supply and a switch thereof that can always uniformly sustain a maximum limit current flowing to the switch regardless of a level of an input voltage without including a special additional circuit can be provided.

摘要翻译： 提供了开关电源及其开关。 该开关包括多个第一晶体管，以及通过与多个第一晶体管的控制信号相等的控制信号导通/截止的第二晶体管，其中与流过多个第一晶体管的第一电流对应的第二电流 第一晶体管流动，其中第一电流与第二电流的比率从第二晶体管导通的时间点顺序地变化。 因此，可以提供一种开关模式电源及其开关，其可以始终均匀地维持流过开关的最大限制电流，而不考虑输入电压的电平而不包括特殊附加电路。

公开(公告)号：US07760520B2

公开(公告)日：2010-07-20

申请号：US11639005

申请日：2006-12-14

申请人： Kyung Oun Jang ,  Yoo-Woong Hwang

发明人： Kyung Oun Jang ,  Yoo-Woong Hwang

IPC分类号： H02M3/335

CPC分类号： H02M1/36 ,  H02M1/32 ,  H02M3/33507

摘要： A current controlled switching mode power supply is provided. A turn on/off time of a switching device is adjusted by controlling a leading edge blanking (LEB) time and an external drive current of the switching device by means of a switching controller, thus capable of preventing a switching current from being excessive due to a delay of a turn-off time of the switching device, which is caused by a circuit delay during a soft start of the switching mode power supply. Also, it is possible to prevent a switching current from being excessive due to a failure of accurately controlling a turn-off time of the switching device because of a delay caused when an output voltage (a voltage at a secondary winding of a transformer) of the switching mode power supply is designed to have a high voltage.

摘要翻译： 提供电流控制切换模式电源。 通过利用开关控制器控制开关装置的前沿消隐（LEB）时间和外部驱动电流来调节开关装置的导通/截止时间，从而能够防止开关电流由于 在开关模式电源的软启动期间由电路延迟引起的开关器件的关断时间的延迟。 此外，由于由于当输出电压（变压器的次级绕组的电压）的输出电压（变压器的次级绕组的电压）的时间延迟导致开关器件的关断时间的精确控制的故障时，可以防止开关电流过大 开关电源设计为具有高电压。

公开(公告)号：US07558084B2

公开(公告)日：2009-07-07

申请号：US11586992

申请日：2006-10-25

申请人： Kyung Oun Jang

发明人： Kyung Oun Jang

IPC分类号： H02M3/335 ,  H02H7/122 ,  H02M3/24

CPC分类号： H02M3/335 ,  H02M1/08

摘要： A switching mode power supply includes a power supply, a feedback circuit, and a switching controller. The power supply includes a main switch coupled to a primary coil of a transformer and supplies power to a secondary coil of the transformer according to an operation of the main switch. The feedback circuit generates a feedback voltage corresponding to an output voltage applied to the secondary coil. The switching controller compensates a propagation delay by controlling a duty of the main switch according to a result of comparing a first signal that fluctuates according to a first voltage corresponding with a current flowing through the main switch to a reference voltage corresponding to the feedback voltage.

摘要翻译： 开关模式电源包括电源，反馈电路和开关控制器。 电源包括耦合到变压器的初级线圈的主开关，并且根据主开关的操作向变压器的次级线圈供电。 反馈电路产生对应于施加到次级线圈的输出电压的反馈电压。 开关控制器通过根据与流过主开关的电流相对应的第一电压波动的第一信号与对应于反馈电压的参考电压进行比较的结果来控制主开关的占空比来补偿传播延迟。