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72 条记录 (耗时 0.015 秒)

    CLASS-D AMPLIFIER
    3.
    发明公开
    CLASS-D AMPLIFIER 有权
    KLASSE-D-VERSTÄRKER

    公开(公告)号：EP3076546A1

    公开(公告)日：2016-10-05

    申请号：EP16162898.7

    申请日：2016-03-30

    申请人： NXP B.V.

    发明人： JORRITSMA, Fré Jorrit ,  KOERTS, Mattheus Johan ,  MOSTERT, Fred

    IPC分类号： H03F3/181 ,  H03F3/217

    CPC分类号： H03F1/0205 ,  H03F3/181 ,  H03F3/185 ,  H03F3/211 ,  H03F3/217 ,  H03F3/2173 ,  H03F3/2175 ,  H03F2200/03 ,  H03F2200/129 ,  H03F2200/351 ,  H03F2203/21142

    摘要： One example discloses a class-D amplifier apparatus, comprising: an amplifier circuit, having a set of input terminals, a set of output terminals, a quiescent circuit configuration, and an active circuit configuration; an amplifier control device, coupled to the amplifier circuit; wherein the amplifier control device is configured to place the amplifier circuit in the quiescent circuit configuration before measuring a voltage between the set of output terminals; wherein the amplifier control device is configured to add the output terminals voltage from the set of input terminals before placing the amplifier circuit in the active circuit configuration.

    摘要翻译： 一个例子公开了一种D类放大器装置，包括：放大器电路，具有一组输入端子，一组输出端子，静态电路配置和有源电路配置; 放大器控制装置，耦合到放大器电路; 其中所述放大器控制装置被配置为在测量所述一组输出端子之间的电压之前将所述放大器电路放置在所述静态电路配置中; 其中所述放大器控制装置被配置为在将所述放大器电路置于所述有源电路配置之前，从所述输入端子组中添加所述输出端子电压。

    Low pass filter with common-mode noise reduction
    4.
    发明公开
    Low pass filter with common-mode noise reduction 有权
    具有共模范围噪声减少的低通滤波器

    公开(公告)号：EP2937996A3

    公开(公告)日：2016-03-02

    申请号：EP14197526.8

    申请日：2014-12-12

    申请人： MediaTek, Inc

    发明人： Peng, Tzu-Hsuin ,  Lou, Chih-Hong ,  Lu, Chao-Hsin ,  Wang, Chi-Yun ,  Chen, Chih-Jung

    IPC分类号： H03H11/12

    CPC分类号： H03F1/26 ,  H03F3/45475 ,  H03F3/45479 ,  H03F3/45932 ,  H03F2200/129 ,  H03F2200/267 ,  H03F2203/45061 ,  H03F2203/45116 ,  H03F2203/45138 ,  H03F2203/45526 ,  H03H11/0405 ,  H03H11/1217 ,  H03H11/1234

    摘要： A low pass filter (100) includes a first amplifier stage (110) and a second amplifier stage (120). The first amplifier stage (110) includes a differential operational amplifier (130), wherein the first amplifier stage is arranged to process a differential input signal to generate a differential intermediate signal, the differential input signal having a first input signal (DIN1) and a second input signal (DIN2), and the differential intermediate signal having a first intermediate signal (DM1) and a second intermediate signal (DM2). The second amplifier stage (120) has no common-mode feedback and is arranged to process the differential intermediate signal to generate a differential output signal, wherein the differential output signal has a first output signal (DOUT1) corresponding to the first input signal (DIN1) and a second output signal (DOUT2) corresponding to the second input signal (DIN2). Since the noisy common-mode feedback is removed from the second amplifier stage, the overall common-mode noise of the low pass filter can be decreased.

    CLASS D SWITCHING AMPLIFIER AND METHOD OF CONTROLLING A LOUDSPEAKER
    5.
    发明公开
    CLASS D SWITCHING AMPLIFIER AND METHOD OF CONTROLLING A LOUDSPEAKER 审中-公开
    KLASSE-D-SCHALTVERSTÄRKERUND VERFAHREN ZUR STEUERUNG EINES LAUTSPRECHERS

    公开(公告)号：EP2983292A1

    公开(公告)日：2016-02-10

    申请号：EP15177977.4

    申请日：2015-07-23

    申请人： STMicroelectronics S.r.l.

    发明人： RAIMONDI, Marco ,  BOTTI, Edoardo

    IPC分类号： H03F3/217

    CPC分类号： H03F3/45932 ,  H03F1/0205 ,  H03F3/183 ,  H03F3/185 ,  H03F3/211 ,  H03F3/217 ,  H03F3/2173 ,  H03F2200/03 ,  H03F2200/129 ,  H03F2200/171 ,  H03F2200/258 ,  H03F2200/351 ,  H03F2200/78 ,  H03F2203/21106

    摘要： A switching amplifier includes: a first half-bridge PWM modulator (11a); a second half-bridge PWM modulator (11b); at least one amplifier stage (8), configured to receive input signals (I IN+ , I IN- ); and a PWM control stage (10), configured to control switching of the first PWM modulator (11a) and of the second PWM modulator (11b) as a function of the input signals (I IN+ , I IN- ), by respective first PWM control signals (S PWM+ ) and second PWM control signals (S PWM -). The amplifier stage (8) and the PWM control stage (10) have a fully differential structure.

    摘要翻译： 开关放大器包括：第一半桥PWM调制器（11a）; 第二半桥PWM调制器（11b）; 至少一个放大器级（8），被配置为接收输入信号（I IN +，I IN-）; 以及PWM控制级（10），被配置为通过相应的第一PWM来控制所述第一PWM调制器（11a）和所述第二PWM调制器（11b）的切换作为所述输入信号（I IN +，I IN-）的函数 控制信号（S PWM +）和第二PWM控制信号（S PWM - ）。 放大器级（8）和PWM控制级（10）具有完全差分结构。

    Low pass filter with common-mode noise reduction
    6.
    发明公开
    Low pass filter with common-mode noise reduction 有权
    具有共模范围噪声减少的低通滤波器

    公开(公告)号：EP2937996A2

    公开(公告)日：2015-10-28

    申请号：EP14197526.8

    申请日：2014-12-12

    申请人： MediaTek, Inc

    发明人： Peng, Tzu-Hsuin ,  Lou, Chih-Hong ,  Lu, Chao-Hsin ,  Wang, Chi-Yun ,  Chen, Chih-Jung

    IPC分类号： H03H11/12

    CPC分类号： H03F1/26 ,  H03F3/45475 ,  H03F3/45479 ,  H03F3/45932 ,  H03F2200/129 ,  H03F2200/267 ,  H03F2203/45061 ,  H03F2203/45116 ,  H03F2203/45138 ,  H03F2203/45526 ,  H03H11/0405 ,  H03H11/1217 ,  H03H11/1234

    摘要： A low pass filter (100) includes a first amplifier stage (110) and a second amplifier stage (120). The first amplifier stage (110) includes a differential operational amplifier (130), wherein the first amplifier stage is arranged to process a differential input signal to generate a differential intermediate signal, the differential input signal having a first input signal (DIN1) and a second input signal (DIN2), and the differential intermediate signal having a first intermediate signal (DM1) and a second intermediate signal (DM2). The second amplifier stage (120) has no common-mode feedback and is arranged to process the differential intermediate signal to generate a differential output signal, wherein the differential output signal has a first output signal (DOUT1) corresponding to the first input signal (DIN1) and a second output signal (DOUT2) corresponding to the second input signal (DIN2). Since the noisy common-mode feedback is removed from the second amplifier stage, the overall common-mode noise of the low pass filter can be decreased.

    Amplifier stage
    7.
    发明公开
    Amplifier stage 审中-公开
    Verstärkerstufe

    公开(公告)号：EP2924878A1

    公开(公告)日：2015-09-30

    申请号：EP15161796.6

    申请日：2015-03-30

    申请人： STMicroelectronics S.r.l.

    发明人： Conte, Antonino ,  Giaquinta, Maria

    IPC分类号： H03F3/45 ,  H03F1/08 ,  H03F1/14 ,  G11C16/12

    CPC分类号： G11C16/0408 ,  G11C16/10 ,  G11C16/12 ,  G11C16/26 ,  G11C29/021 ,  G11C29/028 ,  H03F1/0205 ,  H03F1/086 ,  H03F1/14 ,  H03F3/16 ,  H03F3/45183 ,  H03F3/45475 ,  H03F2200/129 ,  H03F2200/153 ,  H03F2200/45 ,  H03F2200/516 ,  H03F2203/45138 ,  H03F2203/45364 ,  H03F2203/45511 ,  H03F2203/45512 ,  H03K3/012 ,  H03K3/353

    摘要： A solution for amplifying an input signal (Vin) into an output signal (Vo) to be applied to an electric load comprising at least one capacitive component (Cl) is proposed. A corresponding amplifier stage comprises a pre-amplifier module (305) adapted to receive a first supply voltage and an output module (310) adapted to receive a second supply voltage. The pre-amplifier module comprises: a first gain block (315) adapted to pre-amplify the input signal into a first pre-amplified signal, a second gain block (320) adapted to pre-amplify the input signal into a second preamplified signal, a feedback block (325) adapted to feed-back the output signal into a feedback signal, and a combination element (330) adapted to combine the first pre-amplified signal and the feedback signal into a combined signal, and wherein the output module is adapted to combine the combined signal and the second pre-amplified signal into the output signal.

    摘要翻译： 提出了一种用于将输入信号（Vin）放大为要施加到包括至少一个电容分量（C1）的电负载的输出信号（Vo）的解决方案。 相应的放大器级包括适于接收第一电源电压的前置放大器模块（305）和适于接收第二电源电压的输出模块（310）。 前置放大器模块包括：适于将输入信号预放大成第一预放大信号的第一增益块（315），适于将输入信号预放大成第二预放大信号的第二增益块（320） ，适于将所述输出信号反馈到反馈信号中的反馈块（325）以及适于将所述第一预放大信号和所述反馈信号组合成组合信号的组合元件（330），并且其中所述输出模块 适于将组合信号和第二预放大信号组合成输出信号。