公开(公告)号：EP0959562A1

公开(公告)日：1999-11-24

申请号：EP98830311.1

申请日：1998-05-21

Applicant: STMicroelectronics S.r.l.

Inventor： Aiello, Natale ,  La Barbera, Atanasio

IPC: H03K17/567

CPC classification number: H03K17/567

Abstract: The circuit controls the switching of a load (RL) between two supply terminals (Vdd, ground) by means of a device (10) in an emitter-switching configuration constituted by a high-voltage, bipolar power transistor (Q) with its collector connected to the load (RL) and by a low-voltage switch element (M) having a first terminal connected to the emitter of the bipolar power transistor (Q), a second terminal connected to ground, and a control terminal (13) connected to the control terminal (12) of the circuit. The circuit has biasing means (11) connected to the base terminal of the bipolar power transistor (Q). To ensure that the bipolar power transistor (Q) operates in the saturation region throughout the period of conduction, even with a sinusoidal driving voltage (Vin), the biasing means (11) comprise capacitive means (C) and means (Vin, D1; D2; Vdd, R2) for charging the capacitive means (C) so as to bias the base of the bipolar transistor.

Abstract translation: 电路通过由高压双极型功率晶体管（Q）与其集电极构成的发射极切换配置中的器件（10）控制两个电源端子（Vdd，接地）之间的负载（RL）的切换 连接到负载（RL）和具有连接到双极功率晶体管（Q）的发射极的第一端子的低压开关元件（M），连接到地的第二端子和连接到控制端子（13）的低压开关元件 到电路的控制端子（12）。 电路具有连接到双极功率晶体管（Q）的基极端子的偏置装置（11）。 为了确保在导通期间双极功率晶体管（Q）在饱和区域中工作，即使采用正弦驱动电压（Vin），偏置装置（11）包括电容装置（C）和装置（Vin，D1; D2; Vdd，R2），用于对电容装置（C）充电，以便偏压双极晶体管的基极。

公开(公告)号：EP1111765B1

公开(公告)日：2005-10-26

申请号：EP99830799.5

申请日：1999-12-24

Applicant: STMicroelectronics S.r.l.

Inventor： Randazzo, Vincenzo ,  Aiello, Natale ,  La Barbera, Atanasio

IPC: H02M7/5383

CPC classification number: H02M7/53862 ,  H02M3/3382 ,  H02M7/53832 ,  H02M7/53846 ,  H05B41/2828 ,  Y02B20/185

公开(公告)号：EP1111765A1

公开(公告)日：2001-06-27

申请号：EP99830799.5

申请日：1999-12-24

Applicant: STMicroelectronics S.r.l.

Inventor： Randazzo, Vincenzo ,  Aiello, Natale ,  La Barbera, Atanasio

IPC: H02M7/5383

CPC classification number: H02M7/53862 ,  H02M3/3382 ,  H02M7/53832 ,  H02M7/53846 ,  H05B41/2828 ,  Y02B20/185

Abstract: The voltage converter circuit (20) with a self-oscillating half-bridge configuration has a first and a second input terminal (21a, 21b), and a first and a second output terminal (22a, 22b), and includes: a first power switch (60) coupled between the first input terminal (21a) and the first output terminal (22a), a second power switch (80) coupled between the first output terminal (22a) and the second input terminal (21b), a first voltage sensor (70) having a first and a second sensing terminals coupled between the first input terminal (21a) and a control terminal (61) of the first power switch (60), and a second voltage sensor (90) having a first and a second sensing terminals coupled between the first output terminal (22a) and a control terminal (81) of the second power switch (80). Each voltage sensor (70, 90) detects a voltage variation supplied on its respective first sensing terminal and generates on the respective second sensing terminal an activation potential for the respective power switch (60, 80).

Abstract translation: 具有自振荡半桥结构的电压转换器电路（20）具有第一和第二输入端子（21a，21b）以及第一和第二输出端子（22a，22b），并且包括：第一功率 开关（60），耦合在第一输入端子（21a）和第一输出端子（22a）之间，耦合在第一输出端子（22a）和第二输入端子（21b）之间的第二电源开关（80） 传感器（70）具有耦合在第一输入端子（21a）和第一电源开关（60）的控制端子（61）之间的第一和第二感测端子，以及第二电压传感器（90） 第二感测端子耦合在第一输出端子（22a）和第二电源开关（80）的控制端子（81）之间。 每个电压传感器（70,90）检测在其相应的第一感测端子上提供的电压变化，并在相应的第二感测端子上产生用于各个电力开关（60,80）的激活电位。