ESD PROTECTION CIRCUIT
    1.
    发明申请
    ESD PROTECTION CIRCUIT 有权
    ESD保护电路

    公开(公告)号:US20100220419A1

    公开(公告)日:2010-09-02

    申请号:US12663287

    申请日:2008-06-18

    IPC分类号: H02H9/04

    CPC分类号: H01L27/0285

    摘要: An ESD protection circuit comprises a first supply line (VDD), a second supply line (VSS), an ESD protection device, preferably being configured as a transistor (MP), which is connected between the first and second supply line (VDD, VSS) and at least one pin (VA) connected to the first and second supply lines (VDD, VSS) via diodes D1, D2. The ESD protection device is controllable by a trigger voltage that is set by a trigger voltage setting circuit (RP, RD, Z1, Z2, Z3). The ESD protection circuit comprises a trigger circuit (1) being connected to the at least one pin (VA) and providing pin specific trigger voltages, wherein the trigger circuit (1) is further connected to the trigger voltage setting circuit.

    摘要翻译: ESD保护电路包括第一电源线(VDD),第二电源线(VSS),ESD保护器件,优选配置为晶体管(MP),其连接在第一和第二电源线(VDD,VSS )和通过二极管D1,D2连接到第一和第二电源线(VDD,VSS)的至少一个引脚(VA)。 ESD保护装置由触发电压设定电路(RP,RD,Z1,Z2,Z3)设定的触发电压控制。 ESD保护电路包括与至少一个引脚(VA)连接并提供引脚特定触发电压的触发电路(1),其中触发电路(1)进一步连接到触发电压设置电路。

    Power amplifier end stage
    2.
    发明申请
    Power amplifier end stage 有权
    功放终端

    公开(公告)号:US20050218988A1

    公开(公告)日:2005-10-06

    申请号:US10514284

    申请日:2003-04-23

    申请人: Marco Berkhout

    发明人: Marco Berkhout

    IPC分类号: H03K17/687 H03F3/217 H03F3/26

    CPC分类号: H03F3/2171

    摘要: In a push-pull power amplifier having an end stage (10) in which two power transistors (ML, MH) are connected in series, a dead time is normally used to ensure that the power transistors do not conduct simultaneously. The invention provides an end stage in which the dead time can be omitted. This is achieved by dimensioning the driver circuits (11, 12) in such a way that during switching the control voltages (Vgh, Vgl) of the power transistors cross their threshold level (VT) substantially simultaneously.

    摘要翻译: 在具有其中两个功率晶体管(ML,MH)串联连接的端级(1​​0)的推挽功率放大器中,通常使用死区时间来确保功率晶体管不同时导通。 本发明提供了可以省略死区时间的终止阶段。 这通过使驱动电路(11,12)的尺寸确定,使得在功率晶体管的控制电压(Vgh,Vgl)的切换基本上同时跨越其阈值电平(VT)。

    INTEGRATED CIRCUIT
    3.
    发明申请
    INTEGRATED CIRCUIT 有权
    集成电路

    公开(公告)号:US20130049855A1

    公开(公告)日:2013-02-28

    申请号:US13558143

    申请日:2012-07-25

    IPC分类号: G01R31/3167 H03F3/217

    CPC分类号: H03F3/2173 H03F2200/331

    摘要: An integrated circuit comprising a Class-D amplifier for amplifying an input signal at an input terminal is disclosed. The Class-D amplifier is switchable between an operational mode, in which a comparator (4) is directly coupled to an output stage (5), and a test mode, in which the comparator (4) is coupled to the output stage (5) via a sampler (15) and the output stage (5) is coupled to the input terminal via a feedback network, whereby a digital representation of the input signal is available at an output of the sampler (15).

    摘要翻译: 公开了一种集成电路,其包括用于在输入端子处放大输入信号的D类放大器。 D类放大器可以在其中比较器(4)直接耦合到输出级(5)的操作模式和测试模式之间切换,其中比较器(4)耦合到输出级(5) )和输出级(5)经由反馈网络耦合到输入端,由此在采样器(15)的输出处输入信号的数字表示是可用的。

    ESD protection circuit
    4.
    发明授权
    ESD protection circuit 有权
    ESD保护电路

    公开(公告)号:US08077440B2

    公开(公告)日:2011-12-13

    申请号:US12663287

    申请日:2008-06-18

    IPC分类号: H02H9/00 H02H3/22

    CPC分类号: H01L27/0285

    摘要: An ESD protection circuit comprises a first supply line (VDD), a second supply line (Vss), an ESD protection device, preferably being configured as a transistor (MP), which is connected between the first and second supply line (VDD, VSS) and at least one pin (VA) connected to the first and second supply lines (VDD, VSS) via diodes D1, D2. The ESD protection device is controllable by a trigger voltage that is set by a trigger voltage setting circuit (RP, RD, Z1, Z2, Z3). The ESD protection circuit comprises a trigger circuit (1) being connected to the at least one pin (VA) and providing pin specific trigger voltages, wherein the trigger circuit (1) is further connected to the trigger voltage setting circuit.

    摘要翻译: ESD保护电路包括连接在第一和第二电源线(VDD,VSS)之间的第一电源线(VDD),第二电源线(Vss),ESD保护器件,优选配置为晶体管(MP) )和通过二极管D1,D2连接到第一和第二电源线(VDD,VSS)的至少一个引脚(VA)。 ESD保护装置由触发电压设定电路(RP,RD,Z1,Z2,Z3)设定的触发电压控制。 ESD保护电路包括与至少一个引脚(VA)连接并提供引脚特定触发电压的触发电路(1),其中触发电路(1)进一步连接到触发电压设置电路。

    Plop Noise Avoidance for an Amplifier
    5.
    发明申请
    Plop Noise Avoidance for an Amplifier 有权
    放大器的噪声避免

    公开(公告)号:US20070229163A1

    公开(公告)日:2007-10-04

    申请号:US11596790

    申请日:2005-05-09

    申请人: Marco Berkhout

    发明人: Marco Berkhout

    IPC分类号: H03F1/30

    摘要: The invention concerns a method and signal conversion device for avoiding undesirable noise in the start up of an amplifying device, as well as to an amplifying device including such a signal conversion device. The signal conversion device (12) comprises a variable gain providing unit (Q3, Q4, Q5, Q6), a voltage to current converter (Q1, Q2, R1, R2), a variable gain control unit (22) controlling the variable gain of the variable gain providing unit, and a bias current control unit (20) for controlling a first biasing current (IB1) of the voltage to current converter, for avoiding DC offset originating noise as well as noise originating from components of the signal conversion device.

    摘要翻译: 本发明涉及一种方法和信号转换装置,用于避免放大装置启动时的不期望的噪声,以及包括这种信号转换装置的放大装置。 信号转换装置(12)包括可变增益提供单元(Q 3,Q 4,Q 5,Q 6, / SUB>),电压 - 电流转换器(Q 1,Q 2,R 1,R 2,R 2) ),控制可变增益提供单元的可变增益的可变增益控制单元(22),以及用于控制电压的第一偏置电流(I SUB B1)的偏置电流控制单元(20) 到电流转换器,用于避免DC偏移起始噪声以及源自信号转换装置的部件的噪声。

    Demodulation filter
    6.
    发明授权
    Demodulation filter 有权
    解调滤波器

    公开(公告)号:US06414544B2

    公开(公告)日:2002-07-02

    申请号:US09864145

    申请日:2001-05-24

    申请人: Marco Berkhout

    发明人: Marco Berkhout

    IPC分类号: H03F338

    摘要: The invention describes an improvement of a demodulation filter for use in a push-pull amplifier. Known demodulation filters have the disadvantage that in the common mode they have a peaking and oscillating loop introducing great distortions. The demodulation filter according to the invention overcomes these disadvantages by introducing a common mode damping without influencing the differential mode.

    摘要翻译: 本发明描述了用于推挽放大器的解调滤波器的改进。已知的解调滤波器的缺点在于,在共模中,它们具有引起很大失真的峰值和振荡环路。根据本发明的解调滤波器克服了这些缺点 通过引入共模阻尼而不影响差分模式。

    Class D audio amplifier
    7.
    发明授权
    Class D audio amplifier 有权
    D类音频放大器

    公开(公告)号:US07965141B2

    公开(公告)日:2011-06-21

    申请号:US12307457

    申请日:2007-07-04

    IPC分类号: H03F1/04

    摘要: A class D amplifier (1) comprises an input unit (11) for receiving a digital input signal (Vin), a pulse shaping unit (12) for producing pulse shaped signals in dependence of the input signal (Vin), a comparator unit (13) for comparing the pulse shaped signals and producing a comparator signal, a driver unit (14) for producing driver signals in dependence of the comparator signal, a switching output unit (15) for producing a pulse width modulated output signal (Vout) in dependence of the driver signals, and a feedback unit (16) for feeding the output signal (Vout) back to the pulse shaping unit (12). The input unit (11) comprises a clipping control unit (10) for controlling the duty cycle of the pulse width modulated output signal (Vout).

    摘要翻译: D类放大器(1)包括用于接收数字输入信号(Vin)的输入单元(11),用于根据输入信号(Vin)产生脉冲形信号的脉冲整形单元(12),比较器单元 13),用于比较脉冲形状信号并产生比较器信号;驱动单元(14),用于根据比较器信号产生驱动信号;切换输出单元(15),用于产生脉宽调制输出信号 驱动器信号的依赖性,以及用于将输出信号(Vout)馈送回脉冲整形单元(12)的反馈单元(16)。 输入单元(11)包括用于控制脉宽调制输出信号(Vout)的占空比的限幅控制单元(10)。

    Power amplifier
    8.
    发明授权
    Power amplifier 有权
    功率放大器

    公开(公告)号:US07889002B2

    公开(公告)日:2011-02-15

    申请号:US12446150

    申请日:2007-10-18

    申请人: Marco Berkhout

    发明人: Marco Berkhout

    IPC分类号: H03F3/217

    摘要: The invention refers to a power amplifier comprising a first transistor (MH) having a first main channel coupled between a positive power supply terminal (Vdd) and an output terminal (Vout), said first transistor having a control terminal driven by a first gate signal (Vgatehigh) provided by a high driver circuit, which is biased from a first voltage terminal (Vboot). The power amplifier further comprises a second transistor (ML) having a second main channel coupled between the output terminal and a negative power supply terminal (Vss), said second transistor having a second control terminal driven by a second gate signal (Vgatelow) provided by a low driver circuit, which is biased from a second voltage terminal (Vreg), and a switch circuit (10) coupled between the first voltage terminal (Vboot) and the second voltage terminal (Vreg), said switch circuit being controlled by the second gate Signal (Vgatelow).

    摘要翻译: 本发明涉及一种功率放大器,包括具有耦合在正电源端子(Vdd)和输出端子(Vout)之间的第一主通道的第一晶体管(MH),所述第一晶体管具有由第一栅极信号驱动的控制端子 (Vgatehigh)由高驱动电路提供,其由第一电压端子(Vboot)偏置。 功率放大器还包括具有耦合在输出端子和负电源端子(Vss)之间的第二主通道的第二晶体管(ML),所述第二晶体管具有由第二控制端子驱动的第二栅极信号(Vgatelow),第二栅极信号由 从第二电压端子(Vreg)偏置的低驱动器电路和耦合在第一电压端子(Vboot)和第二电压端子(Vreg)之间的开关电路(10),所述开关电路由第二电压端子 门信号(Vgatelow)。

    PULSE WIDTH MODULATION CIRCUIT AND CLASS-D AMPLIFIER COMPRISING THE PWM CIRCUIT
    9.
    发明申请
    PULSE WIDTH MODULATION CIRCUIT AND CLASS-D AMPLIFIER COMPRISING THE PWM CIRCUIT 有权
    脉宽调制电路和包含PWM电路的分类放大器

    公开(公告)号:US20100176881A1

    公开(公告)日:2010-07-15

    申请号:US12665734

    申请日:2008-06-19

    IPC分类号: H03F3/217 H03K7/08

    摘要: A pulse width modulation (PWM) circuit comprises a first integrator (g m1) with a first feedback capacitor (C1), a second integrator (gml) with a second feedback capacitor (C2) and a comparator (A0) having a first input (V1) connected to the output of the first integrator (gm1) and a second input (V2) connected to the output of the second integrator (gm2). A connection path comprising a resistor (R2) is established from the output of the first integrator (gm1) to an input of the second integrator (gm2). The first and second feedback capacitors (C1, C2) have capacities with a non-linear factor X(V) and a circuit with an inversely non-linear factor X−1(V) is arranged in the connection path between the output of the first integrator (gm1) and said input of the second integrator (gm2). The PWM circuit may form path of a Class-D amplifier.

    摘要翻译: 脉冲宽度调制(PWM)电路包括具有第一反馈电容器(C1)的第一积分器(g m1),具有第二反馈电容器(C2)的第二积分器(gml)和具有第一输入端的比较器(A0) V1)连接到第一积分器(gm1)的输出端和连接到第二积分器(gm2)的输出端的第二输入端(V2)。 从第一积分器(gm1)的输出到第二积分器(gm2)的输入,建立包括电阻器(R2)的连接路径。 第一和第二反馈电容器(C1,C2)具有非线性因子X(V)的电容,并且具有反非线性因子X-1(V)的电路被布置在 第一积分器(gm1)和第二积分器(gm2)的所述输入。 PWM电路可以形成D类放大器的路径。

    POWER AMPLIFIER
    10.
    发明申请
    POWER AMPLIFIER 有权
    功率放大器

    公开(公告)号:US20100013555A1

    公开(公告)日:2010-01-21

    申请号:US12446965

    申请日:2007-10-18

    申请人: Marco Berkhout

    发明人: Marco Berkhout

    IPC分类号: H03F3/217

    摘要: A driver (Highside Driver, Lowside Driver) adapted to drive each of final transistors (MH, ML, Mpower) included in a power amplifier, the driver including: a first plurality of switches (Mpslow, Mpmoderate, Mpfast) having their respective main current channels coupled between a bias voltage terminal (Vddx) and a control electrode of the respective final transistors (MH, ML, Mpower), said first plurality of switches (Mpslow, Mpmoderate, Mpfast) being selectively turned ON for enabling a progressive charging of the respective control electrode of the final transistors (MH, ML, Mpower), a second plurality of switches (Mnslow, Mnfast) having their respective main current channels coupled between another bias voltage terminal (Vsource) and the control electrode of the respective final transistors (MH, ML, Mpower), said second plurality of switches (Mnslow, Mnfast) being selectively switched ON until a current through the respective final transistors (MH, ML, Mpower) changes its polarity.

    摘要翻译: 适用于驱动包括在功率放大器中的每个最终晶体管(MH,ML,Mpower)的驱动器(Highside Driver,Lowside Driver),该驱动器包括:具有各自主电流的第一多个开关(Mpslow,Mpmoderate,Mpfast) 耦合在偏置电压端子(Vddx)和各个最终晶体管(MH,ML,Mpower)的控制电极之间的通道,所述第一多个开关(Mpslow,Mpmoderate,Mpfast)被选择性地导通,以使得能够逐渐地对 最终晶体管(MH,ML,Mpower)的相应控制电极,第二多个开关(Mnslow,Mnfast),其各自的主电流通道耦合在另一个偏置电压端子(Vsource)和各个最终晶体管的控制电极 MH,ML,Mpower),所述第二多个开关(Mnslow,Mnfast)被选择性地接通,直到通过各个最终晶体管(MH,ML,Mpower)的电流改变其极性。