公开(公告)号：EP1363385A1

公开(公告)日：2003-11-19

申请号：EP02425295.9

申请日：2002-05-15

Applicant: STMicroelectronics S.r.l.

Inventor： Aiello, Natale ,  Gennaro, Francesco Giovanni

IPC: H02M1/12 ,  H02M3/156

CPC classification number: H02M1/4225 ,  Y02B70/126 ,  Y02P80/112

Abstract: A method for detecting the null current condition in an inductor a PWM driven inductor connected between a voltage source node and a second circuit node of a line for outputting current to a load, comprises time differentiating the voltage present on the second node generating a derivative signal, monitoring the instant when the derivative signal becomes negative and signaling the verification of a null current condition in the inductor each time that the derivative signal becomes negative.
A fully integrable PWM driving circuit implementing this method, detecting the null current condition in an inductor connected between a voltage source node and a second node of a line for outputting current toward a load, comprises a power switch connected between the second node and a ground node of the circuit, a PWM control circuit of the power switch in function of load conditions including a bistable stage coupled to a control terminal of the power switch, and comprises a time differentiating circuit means coupled to the second node, generating a pulse setting the bistable output stage when the voltage on the second node drops.

Abstract translation: 一种用于在电感器连接在电压源节点和输出婷电流到负载的线的第二电路节点之间的PWM驱动的电感器的衍生物检测所述零电流状态的方法，包括时间微分的电压存在于第二节点生成的信号上 ，监测即时当导数信号变为负和信令零电流条件的验证在电感器每次做的导数信号变为负。 一个完全积PWM驱动电路实施该方法中，检测在连接在电压源节点和用于向负载输出婷电流的线的第二节点之间电感器中的零电流状态，包括连接在所述第二之间的功率开关 节点与电路的接地节点，在负荷条件，包括耦合到所述功率开关的控制端的双稳态阶段功能的电力开关的PWM控制电路，以及包括时间微分电路装置，耦合到所述第二节点，产生 一个脉冲设定双稳态输出级。当第二个节点上的电压下降。

公开(公告)号：EP1049165B1

公开(公告)日：2002-09-11

申请号：EP99830261.6

申请日：1999-04-30

Applicant: STMicroelectronics S.r.l.

Inventor： Aiello, Natale

IPC: H01L27/02 ,  H01L27/06

CPC classification number: H01L27/082 ,  H01L21/761 ,  H01L27/0248 ,  H01L27/0259 ,  H01L27/0623

公开(公告)号：EP1162723A1

公开(公告)日：2001-12-12

申请号：EP00830411.5

申请日：2000-06-08

Applicant: STMicroelectronics S.r.l.

Inventor： Aiello, Natale ,  Macina, Francesco

IPC: H02M1/00

CPC classification number: G05F1/569 ,  H02M2001/0006 ,  Y10S323/901 ,  Y10S323/907

Abstract: The present invention refers to a current generator with thermal protection. In one of its embodiments the current generator (GC) with thermal protection having an input terminal (In) and an output terminal (OUT) comprising: a voltage generator (V); a first controlled switch (T1) having a control terminal applied to said voltage generator (V), a first terminal connected to said input terminal (IN), and a second terminal connected to a resistance (R); characterized by comprising: a second controlled switch (T2) having a control terminal coupled to said voltage generator (V), a first terminal connected to said resistance (R), and a second terminal connected to said output terminal (OUT); a temperature sensor (S) of said current generator (GC) able to measure the temperature of said generator (GC); a control circuit (D) of said second controlled switch (T2) able to open said second controlled switch (T2) in the case in which the temperature of said current generator (GC) overcomes a preset temperature.

Abstract translation: 本发明涉及具有热保护的电流发生器。 在其一个实施例中，具有热保护的电流发生器（GC）具有输入端（In）和输出端（OUT），包括：电压发生器（V）; 第一控制开关（T1），其具有施加到所述电压发生器（V）的控制端子，连接到所述输入端子（IN）的第一端子和连接到电阻器（R）的第二端子; 其特征在于包括：具有耦合到所述电压发生器（V）的控制端的第二控制开关（T2），连接到所述电阻（R）的第一端子和连接到所述输出端子（OUT）的第二端子。 所述电流发生器（GC）的温度传感器（S）能够测量所述发生器（GC）的温度; 在所述电流发生器（GC）的温度克服预设温度的情况下，所述第二控制开关（T2）的控制电路（D）能够打开所述第二受控开关（T2）。

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。