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    • 62. 发明申请
    • CIRCUIT FOR REDUCING THE VARIATIONS OF AUTO-SUPPLY VOLTAGE OF A CONTROL CIRCUIT OF A SWITCHING POWER SUPPLY
    • 用于降低开关电源的控制电路的自动供电电压的变化的电路
    • WO2005086333A1
    • 2005-09-15
    • PCT/EP2005/050737
    • 2005-02-21
    • STMICROELECTRONICS s.r.l.ADRAGNA, ClaudioFAGNANI, Mauro
    • ADRAGNA, ClaudioFAGNANI, Mauro
    • H02M3/28
    • H02M3/28H02M2001/0006H02M2001/009
    • The present invention refers to switching power supplies and in particular to a circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply. In an embodiment thereof the circuit for reducing the variations of the auto-supply voltage (Vcc) of a control circuit (12) of a switching power supply where said control circuit (12) supplies an activation or deactivation signal of a power transistor comprises: a generator (Wa) of said auto-supply voltage (Vcc); characterized in that it comprises a controlled switch (T) capable of selectively connecting said generator (Wa) to said control circuit (12); and a driving circuit (SW2) of said controlled switch (T) that supplies a closing signal of said controlled switch (T) after a predefined delay of time (Td) starting from said deactivation command.
    • 本发明涉及开关电源,特别是涉及用于减小开关电源的控制电路的自动供电电压的变化的电路。 在其实施例中,用于减小开关电源的控制电路(12)的变化的电路,其中所述控制电路(12)提供功率晶体管的激活或去激活信号包括: 所述自动电源电压(Vcc)的发电机(Wa); 其特征在于,其包括能够选择性地将所述发电机(Wa)连接到所述控制电路(12)的受控开关(T); 以及所述受控开关(T)的驱动电路(SW2),其在从所述去激活命令开始的预定的延迟时间(Td)之后提供所述受控开关(T)的闭合信号。
    • 63. 发明申请
    • AN ACTIVE IMPEDANCE SYNTHESIS CIRCUIT, FOR EXAMPLE FOR XDSL SPLITTERS
    • 用于XDSL分离器的实例的主动阻抗合成电路
    • WO2005064911A1
    • 2005-07-14
    • PCT/IB2004/004032
    • 2004-12-06
    • STMICROELECTRONICS S.R.L.MASCHERA, DavideDARIO, Daniele
    • MASCHERA, DavideDARIO, Daniele
    • H04M11/06
    • H03H11/40H04L27/2601
    • The arrangement includes a transformer (T) having a primary winding (L1) and a secondary winding (L2), the transformer exhibiting an impedance (Zsh) across the primary winding (2), and an impedance synthesis circuit (K, H(s),g). The impedance synthesis circuit includes a transfer function element (H(s)) having a frequency spectrum. The transfer function element (H(s)) has associated a gain element (K) and a current source (g) controlled by the transfer function element (H(s)). The impedance synthesis circuit (K, H(s),g) is connected to said secondary winding (L2), so that the transformer (T) mirrors the impedance synthesized by the impedance synthesis circuit (K, H(s),g) into the impedance (Zsh) across said primary winding (Li). The primary (Li) winding is adapted to define the high voltage (HV) side of an XDSL splitter, while the impedance synthesis circuit (K, H(s),g) connected to the secondary winding (L2) is inherently a low voltage circuit.
    • 该装置包括具有初级绕组(L1)和次级绕组(L2)的变压器(T),变压器在初级绕组(2)两端呈现阻抗(Zsh),以及阻抗合成电路(K,H(s ),G)。 阻抗合成电路包括具有频谱的传递函数元素(H(s))。 传递函数元素(H(s))已经将增益元素(K)和由传递函数元素(H(s))控制的电流源(g)相关联。 阻抗合成电路(K,H(s),g)连接到所述次级绕组(L2),使得变压器(T)反映由阻抗合成电路(K,H(s),g)合成的阻抗, 穿过所述初级绕组(Li)的阻抗(Zsh)。 初级(Li)绕组适于限定XDSL分离器的高压(HV)侧,而连接到次级绕组(L2)的阻抗合成电路(K,H(s),g)固有地是低电压 电路。
    • 68. 发明申请
    • I IMPROVED DETECTION STRUCTURE FOR A Z-AXIS RESONANT ACCELEROMETER
    • 我改进了Z轴共振加速度计的检测结构
    • WO2013030798A1
    • 2013-03-07
    • PCT/IB2012/054497
    • 2012-08-31
    • STMicroelectronics S.r.l.POLITECNICO DI MILANOCOMI, ClaudiaCORIGLIANO, AlbertoZERBINI, Sarah
    • COMI, ClaudiaCORIGLIANO, AlbertoZERBINI, Sarah
    • G01P15/097
    • G01P15/0975G01P15/097
    • A detection, structure (1) for a z-axis resonant accelerometer (24) is provided with an inertial mass (2) anchored to a substrate (20) by means of elastic anchorage elements (6) so as to be suspended above the substrate (20) and perform an inertial movement of rotation about a first axis of rotation (A) belonging to a plane (xy) of main extension of the inertial mass (2), in response to an external acceleration (a-) acting along a vertical axis (z) transverse with respect to the plane (xy); and a first resonator element (10a) and a second resonator element (10b), which are mechanically coupled to the inertial mass (2) by respective elastic supporting elements (16), which enable a movement of rotation about a second axis of rotation (B) and a third axis of rotation (C), in a resonance condition. In particular, the second axis of rotation (B) and the third axis of rotation (C) are parallel to one another, and are moreover parallel to the first axis of rotation (A) of the inertial mass (2).
    • 用于z轴共振加速度计(24)的检测结构(1)具有通过弹性锚定元件(6)锚定到基底(20)上的惯性质量块(2),以悬浮在基底上方 (20),并且响应于沿着惯性质量(2)的主延伸的平面(xy)的旋转的第一旋转轴线(A),沿着沿着惯性质量 垂直轴(z)相对于平面(xy)横向; 以及通过相应的弹性支撑元件(16)机械耦合到惯性块(2)的第一谐振器元件(10a)和第二谐振元件(10b),其使得能够围绕第二旋转轴线旋转 B)和第三旋转轴(C)。 特别地,第二旋转轴线(B)和第三旋转轴线(C)彼此平行,并且平行于惯性质量块(2)的第一旋转轴线(A)。
    • 69. 发明申请
    • LOW VOLTAGE ISOLATION SWITCH, IN PARTICULAR FOR A TRANSMISSION CHANNEL FOR ULTRASOUND APPLICATIONS
    • 低电压隔离开关,特别适用于超声波应用的传输通道
    • WO2012085951A1
    • 2012-06-28
    • PCT/IT2010/000511
    • 2010-12-23
    • STMICROELECTRONICS S.R.L.BOTTAREL, ValeriaRICOTTI, GiulioQUAGLIA, Fabio
    • BOTTAREL, ValeriaRICOTTI, GiulioQUAGLIA, Fabio
    • H03K17/081H03K17/30G01S7/52B06B1/02
    • H03K17/16H03K17/08104H03K17/30
    • A low voltage isolation circuit (1) is described inserted between a connection node (HVout) to a matrix (2) of switches suitable for receiving a high voltage signal (IM) and a connection terminal (pzt) to a load (PZ) suitable for transmitting said high voltage signal (IM) to said load (PZ) of the type comprising at least one driving block (5) inserted between a first and a second voltage reference (Vss, - Vss) and comprising at least a first driving transistor (M l), inserted, in series with a first driving diode (Dl), between the first voltage reference (Vss) and a first driving central circuit node (Xc) and a second driving transistor (M2), in turn inserted, in series with a second diode (D2), between the driving central circuit node (Xc) and the second supply voltage reference (-Vss). The switch comprises an isolation block (8) connected to the connection terminal (pzt), to the connection node (HVout) and to the driving central circuit node (Xc) and comprising at least one voltage limiter block (6), a diode block (7) and a control transistor (MD), in turn connected across the diode block (7) between the connection node (HVout) to the matrix (2) of switches and the connection terminal (pzt) to the load (PZ) of the low voltage isolation switch (1) and having a control terminal (XD) connected to the driving central circuit node (Xc).
    • 描述了一种低电压隔离电路(1),其插入到适于接收高电压信号(IM)的开关的矩阵(2)的连接节点(HVout)和适合于负载(PZ)的连接端子(pzt)之间 用于将所述高电压信号(IM)发送到包括插入在第一和第二参考电压(Vss,-Vss)之间的至少一个驱动块(5)的类型的所述负载(PZ),并且至少包括第一驱动晶体管 (M1)与第一驱动二极管(D1)串联插入在第一电压基准(Vss)和第一驱动中心电路节点(Xc)和第二驱动晶体管(M2)之间,然后插入 与驱动中心电路节点(Xc)和第二电源电压基准(-Vss)之间的第二二极管(D2)串联。 开关包括连接到连接端子(pzt)的隔离块(8),连接节点(HVout)和驱动中心电路节点(Xc),并且包括至少一个限压器块(6),二极管块 (7)和控制晶体管(MD),它们连接在连接节点(HVout)与开关矩阵(2)之间的二极管块(7)和连接端子(pzt)与负载(PZ)之间 低电压隔离开关(1)并具有连接到驱动中心电路节点(Xc)的控制端子(XD)。