公开(公告)号：US20020079948A1

公开(公告)日：2002-06-27

申请号：US09912073

申请日：2001-07-24

Applicant: STMicroelectronics S.r.I.

Inventor： Ugo Moriconi ,  Claudio Adragna

IPC: H03K017/16

CPC classification number: H03K17/063 ,  H02M3/155 ,  H02M3/1588 ,  Y02B70/1466

Abstract: The present invention concerns a bootstrap circuit in DC/DC static converters comprising first current generator means controlled to close in function of a first signal and a recharge circuit of a capacitor. The bootstrap circuit has the characteristic of comprising second current generator means controlled to close with a second signal synchronous with the first signal, the second signal has times and modalities such to send to the capacitor recharge currents such to compensate the discharge of the capacitor itself.

Abstract translation: 本发明涉及DC / DC静态转换器中的自举电路，其包括被控制为关闭第一信号和电容器的再充电电路的第一电流发生器装置。 自举电路具有包括被控制为与第一信号同步的第二信号闭合的第二电流发生器装置的特性，第二信号具有发送到电容器再充电电流以补偿电容器本身的放电的次数和模态。

公开(公告)号：US20020036487A1

公开(公告)日：2002-03-28

申请号：US09912232

申请日：2001-07-24

Applicant: STMicroelectronics S.r.I.

Inventor： Ugo Moriconi ,  Claudio Adragna

IPC: G05F001/44

CPC classification number: H03K17/063 ,  H02M3/155

Abstract: Disclosed is a bootstrap circuit in DC/DC static converters having the characteristic of comprising a fixed frequency signal, a recharge circuit of a capacitor and current generator means, said generator means controlled so as to emit current pulses, in synchrony with said fixed frequency signal, of a predetermined duration, every time that charge accumulated by said capacitor goes below a predetermined level.

Abstract translation: 公开了一种DC / DC静态转换器中的自举电路，具有包括固定频率信号，电容器的再充电电路和电流发生器装置的特性，所述发生器装置被控制以与所述固定频率信号同步地发射电流脉冲 每当所述电容器累积的电荷低于预定电平时，具有预定持续时间。