公开(公告)号：US06320449B1

公开(公告)日：2001-11-20

申请号：US09692133

申请日：2000-10-19

申请人： Salvatore Vincenzo Capici ,  Filippo Marino

发明人： Salvatore Vincenzo Capici ,  Filippo Marino

IPC分类号： H03K17687

CPC分类号： H03K17/687 ,  H03K17/04123

摘要： The invention relates to a driver circuit for P-channel MOS switches including a power transistor having a control terminal and first and second conduction terminals, a controlled current generator connected to the control terminal for turning on the power transistor, a control circuit for controlling the turning on of the current generator, and a protection circuit coupled to the control terminal. The driver circuit may also include a second current generator connected to the control terminal of the power transistor which is in turn driven by the control circuit to control the transistor turn-off. Advantageously, the control circuit may also receive a control signal from the protection circuit at the end of the latter's action.

摘要翻译： 本发明涉及一种用于P沟道MOS开关的驱动电路，包括具有控制端和第一和第二导通端的功率晶体管，连接到用于接通功率晶体管的控制端的受控电流发生器，控制电路 接通电流发生器，以及保护电路，耦合到控制端。 驱动器电路还可以包括连接到功率晶体管的控制端子的第二电流发生器，该第二电流发生器又由控制电路驱动以控制晶体管截止。 有利地，控制电路还可以在后者的动作结束时从保护电路接收控制信号。

公开(公告)号：US06218820B1

公开(公告)日：2001-04-17

申请号：US09568609

申请日：2000-05-10

申请人： Angelo D'Arrigo ,  Salvatore Capici ,  Filippo Marino ,  Francesco Pulvirenti

发明人： Angelo D'Arrigo ,  Salvatore Capici ,  Filippo Marino ,  Francesco Pulvirenti

IPC分类号： G05F140

CPC分类号： H02J7/0068 ,  H02M3/156 ,  H02M2001/0009

摘要： A frequency translator is usable in a switching DC-DC converter of the type operating as a voltage regulator and as a battery charger. The frequency translator receives at inputs a division voltage (VFB) proportional to a present value of the output voltage (VOUT) of the DC-DC converter, a reference voltage (VREF) correlated to a nominal value of the output voltage (VOUT), and a limiting signal (VL) indicative of a normal operation or of current limitation operation of the DC-DC converter, and supplies at an output a bias current (IBIAS) which is supplied to an input of an oscillator supplying at an output a comparison signal (VC) presenting a periodic pattern with a frequency which is correlated to the bias current (IBIAS). In particular, the frequency translator operates in a way such as to regulate a frequency translation of the comparison signal (VC) as a function of the difference between the division voltage (VFB) and the reference voltage (VREF) only when the DC-DC converter is operating in the current limitation condition.

摘要翻译： 频率转换器可用于作为电压调节器和电池充电器工作的类型的开关DC-DC转换器。 频率转换器在输入处接收与DC-DC转换器的输出电压（VOUT）的当前值成比例的分压（VOUT），与输出电压（VOUT）的标称值相关的参考电压（VREF） 以及指示DC-DC转换器的正常操作或电流限制操作的限制信号（VL），并在输出端提供偏置电流（IBIAS），该偏置电流被提供给在输出端提供比较器的输入端 信号（VC）呈现具有与偏置电流（IBIAS）相关的频率的周期性模式。 特别地，频率转换器以这样的方式操作，以便仅当DC-DC（DC）DC调节作为分频电压（VFB）和参考电压（VREF）之间的差的函数的比较信号（VC）的频率转换 转换器在当前限制条件下工作。