专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2008075318A2 ERROR CORRECTION SYSTEM FOR A CLASS-D POWER STAGE 审中-公开
标题翻译：一类D级电源故障校正系统
公开(公告)号：WO2008075318A2
公开(公告)日：2008-06-26
申请号：PCT/IB2007/055279
申请日：2007-12-21
申请人： BANG & OLUFSEN ICEPOWER A/S , NIELSEN, Ole Neis
发明人： NIELSEN, Ole Neis
CPC分类号： H03F3/217 , H03F1/32 , H03F2200/03 , H03F2200/144 , H03F2200/351 , H03F2200/372 , H03M1/1033 , H03M1/822
摘要： The present invention relates to a method for correcting for a source of non-linearity and noise introduced in a switching power amplification stage during power amplification of a pulse-modulated reference signal from a pulse modulator, where the method comprises the following steps: - providing an output stage embedded in an analogue self-oscillating control loop able to receive a pulse-referenced input signal; - generating a feedback signal from the switching power amplification stage or after a demodulation filter; - deriving an error signal by comparing the feedback signal with the reference signal; - filtering the error signal by a low pass filter for reducing the higher harmonics of the carrier; - adding a compensator for generating high loop gain in the audio band; - feeding the compensator output to a zero cross detector or comparator, thus providing a carrier for re-modulation or re-timing by feeding the filtered signal to a zero cross detector or comparator, which controls the output stage. The invention furthermore relates to various systems for implementing the above method.
摘要翻译：本发明涉及用于校正在来自脉冲调制器的脉冲调制参考信号的功率放大期间在开关功率放大级中引入的非线性和噪声源的方法，其中该方法包括以下步骤： - 提供嵌入在能够接收脉冲参考输入信号的模拟自振荡控制环路中的输出级; - 从开关功率放大级产生反馈信号或在解调滤波器之后产生反馈信号; - 通过将反馈信号与参考信号进行比较来导出误差信号; - 通过低通滤波器对误差信号进行滤波，以降低载波的高次谐波; - 添加一个用于在音频带中产生高回路增益的补偿器; - 将补偿器输出馈送到零交叉检测器或比较器，从而通过将滤波后的信号馈送到控制输出级的零交叉检测器或比较器来提供用于重新调制或重新定时的载波。本发明还涉及用于实现上述方法的各种系统。

2. 发明申请

WO2012172007A1 A TWO MODE POWER CONVERTER FOR AUDIO AMPLIFIERS 审中-公开
标题翻译：用于音频放大器的两个模式电源转换器
公开(公告)号：WO2012172007A1
公开(公告)日：2012-12-20
申请号：PCT/EP2012/061334
申请日：2012-06-14
申请人： BANG & OLUFSEN ICEPOWER A/S , FRIUM, Mads Peter
发明人： FRIUM, Mads Peter
IPC分类号： H02M3/335
CPC分类号： H02M3/33576 , H02M3/33569 , H02M2001/0058 , H03F3/217 , H03F3/2173 , Y02B70/1491
摘要： A power converter with positive and negative supply rails outputs (7, 8) for feeding a single ended class D amplifier, the converter comprising a transformer arrangement (2), a supply pump reduction arrangement (4) connected between the secondary windings and the positive and negative supply rail outputs, and a boost drive mode switching arrangement (5). A controller (3) is adapted to control the power converter in a negate drive mode and a boost drive mode, wherein the output voltage in the bost mode is increased by means of the transformer and the boost drive mode switching arrangement. The output voltages on the positive and negative rails can be generated at two different output voltage levels without changing the duty cycle or dead time of the control signals.
摘要翻译：一种具有用于馈送单端D类放大器的正和负电源轨输出（7,8）的功率转换器，该转换器包括变压器装置（2），连接在次级绕组和正极之间的供应泵减速装置（4）和负电源轨输出，以及升压驱动模式切换装置（5）。控制器（3）适于在非驱动模式和升压驱动模式下控制功率转换器，其中通过变压器和升压驱动模式切换装置增加波特率模式中的输出电压。正负极轨上的输出电压可以在两个不同的输出电压电平下产生，而不会改变控制信号的占空比或死区时间。

3. 发明申请

WO2007093903A1 A MICRO-TRANSDUCER WITH IMPROVED PERCEIVED SOUND QUALITY 审中-公开
标题翻译：具有改善声音质量的微型传感器
公开(公告)号：WO2007093903A1
公开(公告)日：2007-08-23
申请号：PCT/IB2007/000374
申请日：2007-02-16
申请人： BANG & OLUFSEN ICEPOWER A/S , NIELSEN, Karsten , HANSEN, Lars, Brandt, Rosendahl
发明人： NIELSEN, Karsten , HANSEN, Lars, Brandt, Rosendahl
IPC分类号： H04R1/28 , H04R9/02 , H04R7/12
CPC分类号： H04R9/025 , H04R1/22 , H04R7/125 , H04R2307/027 , H04R2400/11 , H04R2499/11
摘要： The typical micro-transducer dedicated for mobile phones and headphones produces at high output in small back enclosure significant distortion in the acoustical output. These typical micro-transducers are designed for very high sensitivity and their mechanical suspension compliances are designed for worst case scenario, free air environment or a very large back enclosure (were the air stiffness from the back enclosure is much lower than the mechanical transducer suspension stiffness). This leads to poor low frequency response, high distortion, non-linear SPL characteristic and unnecessary high system resonance fre- quency when the transducer is placed in a small back enclosure. The Soft Suspension Long throw (SSL) micro-transducer has been designed with an improved non-circular shaped magnetic system, a low density/high Young's modulus thermal conducting diaphragm, a large-area non-circularly shaped diaphragm area, a non-circular shaped voice coil and a soft long-throw suspension which has been designed so that the SSL micro-transducer only functions properly when mounted in a small back enclosure. The combination of these inventions leads to a transducer architecture offering significant improvements in overall distortion, high RMS power handling, extended bass reproduction, also in compact volumes, and an overall flat frequency response. The combined result of several inventions is a significant overall improvement in perceived sound quality.
摘要翻译：专用于手机和耳机的典型微型换能器在小背部高输出端产生声输出中的显着失真。这些典型的微型换能器设计用于非常高的灵敏度，并且它们的机械悬架一致性被设计用于最坏的情况，自由空气环境或非常大的后部外壳（来自后部外壳的空气刚度远低于机械传感器悬架刚度）。当传感器放置在小后箱中时，这导致差的低频响应，高失真，非线性SPL特性和不必要的高系统谐振频率。软悬挂长投（SSL）微型换能器设计有改进的非圆形磁系统，低密度/高杨氏模量导热隔膜，大面积非圆形隔膜面积，非圆形形状的音圈和软长悬挂悬挂，其设计使得SSL微型换能器仅在安装在小后箱中时才能正常工作。这些发明的组合导致了传感器架构，其在整体失真，高RMS功率处理，扩展低音再现以及紧凑体积以及整体平坦频率响应方面都有显着改进。几个发明的综合结果是感知音质的显着整体提高。

4. 发明申请

WO2003055060A1 SYNCHRONIZED CONTROLLED OSCILLATION MODULATOR 审中-公开
标题翻译：同步控制振荡调制器
公开(公告)号：WO2003055060A1
公开(公告)日：2003-07-03
申请号：PCT/IB2002/005412
申请日：2002-12-16
申请人： BANG & OLUFSEN ICEPOWER A/S , NIELSEN, Karsten , LIND HANSEN, Jesper
发明人： NIELSEN, Karsten , LIND HANSEN, Jesper
IPC分类号： H03F3/38
CPC分类号： H03F3/217 , H02M3/1584 , H03F2200/351
摘要： A synchronized controlled oscillation modulator (SCOM) , comprising at least one, Controlled Oscillation Modulator (5) , and synchronizing means (1, 6) connected to said COM modulator. The modulator can comprise several COM modulators, and the synchronizing means can be arranged between the COM systems, so that the oscillation modulator signal is used as synchronization signal. The invention provides significant advantages in performance, topological simplification, improved robustness, stability and efficiency compared to prior art.
摘要翻译：一种同步控制振荡调制器（SCOM），包括至少一个控制振荡调制器（5）和连接到所述COM调制器的同步装置（1,6）。调制器可以包括几个COM调制器，并且同步装置可以被布置在COM系统之间，使得振荡调制器信号被用作同步信号。与现有技术相比，本发明在性能，拓扑简化，改进的鲁棒性，稳定性和效率方面提供了显着的优点。

5. 发明申请

WO2016083081A1 A SYSTEM AND METHOD FOR CLOSE-DOWN POP REDUCTION 审中-公开
标题翻译：一种减少POP减少的系统和方法
公开(公告)号：WO2016083081A1
公开(公告)日：2016-06-02
申请号：PCT/EP2015/075433
申请日：2015-11-02
申请人： BANG & OLUFSEN ICEPOWER A/S
发明人： SKOV ANDERSEN, Kennet
IPC分类号： H03F3/187 , H03F3/217 , H03F1/30 , H03F3/45 , H03G3/34
CPC分类号： H03F1/305 , H03F1/02 , H03F3/183 , H03F3/187 , H03F3/217 , H03F3/2173 , H03F2200/03 , H03F2200/129 , H03F2200/135 , H03F2200/144 , H03F2200/156 , H03F2200/258 , H03F2200/342 , H03F2200/426 , H03F2200/441 , H03F2200/444 , H03F2200/66 , H03F2200/78 , H03G3/301 , H03G3/348 , H03G2201/106
摘要： A close-down pop reduction system and a method for close-down pop reduction in an audio amplifier assembly are disclosed. The switching power conversion system comprises a forward path having a compensator and a switching power stage and a signal path from an output of a comparator in the switching power stage to a sequence control unit. The signal path includes a close-down timing circuit configured to provide a timing signal. The sequence control unit is configured to eliminate the input signal, increase the switch frequency of the close-down pop reduction system and disable the switching power stage at a moment in time within a PWM pulse of the switching power stage. Hereby, it is e.g. possible to minimize the audible pop during close- down of audio amplifier assemblies.
摘要翻译：公开了一种用于音频放大器组件中的关闭弹出缩小系统和关闭弹出缩小的方法。开关功率转换系统包括具有补偿器和开关功率级的正向路径以及从开关功率级的比较器的输出到序列控制单元的信号路径。信号路径包括被配置为提供定时信号的关闭定时电路。顺序控制单元被配置为消除输入信号，增加关闭弹出式缩小系统的开关频率，并且在开关功率级的PWM脉冲内的时间上禁用开关功率级。因此，例如可能在关闭音频放大器组件期间最小化可听见的音乐。

6. 发明申请

WO2008075306A1 TRUE CURRENT LIMITING (TCL) 审中-公开
标题翻译：真正限流（TCL）
公开(公告)号：WO2008075306A1
公开(公告)日：2008-06-26
申请号：PCT/IB2007/055247
申请日：2007-12-20
申请人： BANG & OLUFSEN ICEPOWER A/S , NIELSEN, Ole Neis
发明人： NIELSEN, Ole Neis
IPC分类号： H03F3/217 , H03F1/52
CPC分类号： H03F3/217 , H03F1/52
摘要： The invention relates to a current limiting method, e. g. for Class D amplifiers comprising a unique detection- and control method. The current detection circuit can be implemented as a voltage measurement where the measured voltage corresponds to the current flowing through the power-switching device. The device can be switched OFF when a set limit is reached. By forcing certain OFF time, the associated control system behaves as a self-oscillating current limiting circuit. This can be implemented locally close to the switching device and be independent of other local or global control systems.
摘要翻译：本发明涉及限流方法，例如， G。用于D类放大器，其包括独特的检测和控制方法。电流检测电路可以实现为电压测量，其中测量的电压对应于流过功率开关器件的电流。达到设定限制后，该设备可以关闭。通过强制某些OFF时间，相关的控制系统表现为自振电流限制电路。这可以在本地靠近开关装置实现并且独立于其它本地或全局控制系统。

7. 发明申请

WO2007099442A1 HYBRID FEEDBACK CONTROLLED OSCILLATION MODULATOR AND SWITCHING POWER AMPLIFIER SYSTEM 审中-公开
标题翻译：安全分解方法
公开(公告)号：WO2007099442A1
公开(公告)日：2007-09-07
申请号：PCT/IB2007/000493
申请日：2007-03-02
申请人： BANG & OLUFSEN ICEPOWER A/S , NIELSEN, Karsten , LJUSEV, Petar
发明人： NIELSEN, Karsten , LJUSEV, Petar
IPC分类号： H03F3/217
CPC分类号： H03F3/217 , H03F2200/03
摘要： A Hybrid feedback Controlled Oscillation Modulator (HCOM) has a 1 st feedback path from the output voltage of the switching stage Vp and a second feedback path from the filter output Vo, the two feedback paths superposed to provide a weighted state feedback signal Vf. Said state feedback path signal is subtracted from the input signal to form an error signal, said error signal filtered by a forward path compensation block B(s), closing the loop by feeding said pulse modulator, said loop having a transfer function such that self-oscillation can be established in the closed loop system. In a preferred embodiment, the first feedback path has a low pass characteristic and the second feedback path lead characteristic, the first feedback path being weighted by a weighting factor β. Further embodiments include a pure passive realization without forward path means B(s) and the application of 3rd feedback loops to enhance global amplifier performance.
摘要翻译：混合反馈控制振荡调制器（HCOM）具有来自开关级Vp的输出电压的第一反馈路径和来自滤波器输出Vo的第二反馈路径，所述两个反馈路径被叠加以提供加权状态反馈信号Vf。所述状态反馈路径信号从输入信号中减去以形成误差信号，所述误差信号由正向路径补偿块B滤波，通过馈送所述脉冲调制器来闭合回路，所述回路具有传递函数，使得自身可以在闭环系统中建立振荡。在优选实施例中，第一反馈路径具有低通特性和第二反馈路径引线特性，第一反馈路径由加权因子β加权。其他实施例包括没有正向路径装置B的纯无源实现以及第三反馈环路的应用以增强全局放大器性能。

8. 发明申请

WO2003055072A1 HALF-BRIDGE DRIVER AND POWER CONVERSION SYSTEM WITH SUCH DRIVER 审中-公开
标题翻译：具有这种驱动器的半桥驱动器和功率转换系统
公开(公告)号：WO2003055072A1
公开(公告)日：2003-07-03
申请号：PCT/IB2002/005152
申请日：2002-12-05
申请人： BANG & OLUFSEN ICEPOWER A/S , NIELSEN, Ole, Neis
发明人： NIELSEN, Ole, Neis
IPC分类号： H03K5/1252
CPC分类号： H03K17/6871 , H03K17/063
摘要： This invention relates to a half-bridge driver comprising first and second power switches, connected with their respective current paths in series, a pulse generator for generating a voltage pulse waveform, arranged to drive said first power switch (33), a first current generator (11), for generating a current pulse for each negative flank of said voltage pulse waveform, a second current generator (12), for generating a current pulse for each positive flank of said voltage pulse waveform, and a differential current receiver circuit (27), connected to said first and second current generators, and arranged to generate an output signal (I LATCH ) equal to the difference of the currents flowing through said current generators (11, 12), said output signal arranged to drive said second power switch (31).
摘要翻译：本发明涉及一种半桥驱动器，包括与其各自的电流路径串联连接的第一和第二功率开关，用于产生电压脉冲波形的脉冲发生器，用于驱动所述第一功率开关（33），第一电流发生器（11），用于为所述电压脉冲波形的每个负侧面生成电流脉冲;第二电流发生器（12），用于为所述电压脉冲波形的每个正侧面产生电流脉冲;以及差动电流接收器电路（27）），连接到所述第一和第二电流发生器，并且被布置成产生等于流过所述电流发生器（11,12）的电流差的输出信号（I> LATCH <...），所述输出信号被布置成驱动所述第二电源开关（31）。

9. 发明申请

WO2016162156A1 DUTY CYCLE CLIPPER 审中-公开
标题翻译：占空比剪辑
公开(公告)号：WO2016162156A1
公开(公告)日：2016-10-13
申请号：PCT/EP2016/054893
申请日：2016-03-08
申请人： BANG & OLUFSEN ICEPOWER A/S
发明人： SKOV ANDERSEN, Kennet
IPC分类号： H03F3/181 , H03F3/217
CPC分类号： H03F3/2173 , H03F1/523 , H03F3/181 , H03F3/217 , H03F3/2175 , H03F2200/03 , H03F2200/66
摘要： A power conversion system comprising an amplifier input for receiving an analogue input signal and an amplifier output for providing a switching output signal is disclosed. The system is applicable for use in high definition switching audio amplification. The power conversion system further comprises a clipper for clipping the analogue input signal having a predefined range limited by a clipping level, a pulse modulator and a switching power stage. The system further has a feedback path to the clipper including a duty cycle measuring unit and a clip level filter which generates a clip level signal and where the clipping level of the clipper is controlled by the clip level signal. Hereby it is e.g. possible to clip an analogue input signal with good precision and reliability in a switching power conversion system.
摘要翻译：公开了一种包括用于接收模拟输入信号的放大器输入和用于提供开关输出信号的放大器输出的功率转换系统。该系统适用于高清晰度切换音频放大。功率转换系统还包括用于限幅模拟输入信号的限幅器，该模拟输入信号具有由限幅电平限制的预定范围，脉冲调制器和开关功率级。该系统还具有一个到裁剪器的反馈路径，其中包括一个占空比测量单元和一个剪辑电平滤波器，该滤波器产生一个剪辑电平信号，其中剪辑器的限幅电平由剪辑电平信号控制。因此，例如可能在开关电源转换系统中夹具具有良好的精度和可靠性的模拟输入信号。

10. 发明申请

WO2012160021A1 POWER SUPPLY ARRANGEMENT FOR SINGLE ENDED CLASS D AMPLIFIER 审中-公开
标题翻译：单端D类放大器的电源装置
公开(公告)号：WO2012160021A1
公开(公告)日：2012-11-29
申请号：PCT/EP2012/059363
申请日：2012-05-21
申请人： BANG & OLUFSEN ICEPOWER A/S , FRIUM, Mads Peter
发明人： FRIUM, Mads Peter
IPC分类号： H02M3/337 , H03F3/217
CPC分类号： H02M3/33569 , H02M2001/0006 , H03F3/185 , H03F3/217 , H03F3/2171
摘要： A power supply arrangement for a single ended class D amplifier (1), including a first primary winding (7) connected in series with a first switch (8) between the positive supply rail and ground, a second primary winding (9) in phase with said first primary winding and connected in series with a second switch (10) between the negative supply rail and ground, and a controller (15) adapted to apply a control signal to said first and second switches, said control signal (Q) having ON-pulses of a predefined pulse time (pt) separated by a dead time (dt). In use, the primary winding connected to the supply rail with the highest numerical voltage will transform the rail voltage difference to the supply rail with the lowest numerical voltage through the opposite primary winding thus reducing any voltage unbalance between the windings.
摘要翻译：一种用于单端D类放大器（1）的电源装置，包括与正电源轨和地之间的第一开关（8）串联连接的第一初级绕组（7），同相的第二初级绕组（9）所述第一初级绕组与负电源轨和地之间的第二开关（10）串联连接，以及适于向所述第一和第二开关施加控制信号的控制器（15），所述控制信号（Q）具有以死区时间（dt）分隔的预定脉冲时间（pt）的ON脉冲。在使用中，连接到具有最高数值电压的电源轨的初级绕组将通过相对的初级绕组将轨电压差转换为具有最低数值电压的电源轨，从而减少绕组之间的任何电压不平衡。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式