公开(公告)号：US08169795B2

公开(公告)日：2012-05-01

申请号：US12224288

申请日：2007-02-23

Applicant: Lars Petersen

Inventor： Lars Petersen

IPC: H02M3/335 ,  H02M7/217

CPC classification number: H03F3/217 ,  H03F3/2173 ,  H03F2200/03 ,  H03F2200/504 ,  Y10T307/858

Abstract: An audio power conversion system includes a power supply having a positive supply rail and a negative supply rail for supplying power to a single ended class D amplifier. The system further includes a supply pump reduction circuit connected to the supply rails and adapted to redistribute a pumping charge from said power supply by forcing a current-flow from a rail with a higher voltage to a rail with a lower voltage. According to the at least one embodiment of the invention, the redistribution circuit is arranges to always distribute charge from the rail with the higher voltage. Thus, for practical circuits, the pump canceling occurs continuously and is not confined to every other cycle.

Abstract translation: 音频电力转换系统包括具有用于向单端D类放大器供电的正电源轨和负电源轨的电源。 该系统还包括连接到供应轨道的供应泵减小电路，并且适于通过迫使来自具有较高电压的轨道的电流流动到具有较低电压的轨道的电流从所述电源重新分配泵送电荷。 根据本发明的至少一个实施例，再分配电路布置成总是以较高电压从轨道分配电荷。 因此，对于实际电路，泵消除连续发生并且不限于每隔一个循环。

公开(公告)号：US07936216B2

公开(公告)日：2011-05-03

申请号：US12519472

申请日：2007-12-20

Applicant: Ole Neis Nielsen

Inventor： Ole Neis Nielsen

IPC: H03F3/217

CPC classification number: H03F3/217 ,  H03F1/52

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US10256780B2

公开(公告)日：2019-04-09

申请号：US15556449

申请日：2016-03-08

Applicant: ICEpower a/s

Inventor： Kennet Skov Anderson

IPC: H03F3/38 ,  H03F3/217 ,  H03F3/181 ,  H03F1/52

Abstract: A power conversion system comprising an amplifier input for receiving an analog 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 analog 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 analog input signal with good precision and reliability in a switching power conversion system.

公开(公告)号：US09077257B2

公开(公告)日：2015-07-07

申请号：US14115372

申请日：2012-05-21

Applicant: Mads Peter Frium

Inventor： Mads Peter Frium

IPC: H03F3/04 ,  H02M3/335 ,  H03F3/217 ,  H03F3/185 ,  H02M1/00

CPC classification number: H02M3/33569 ,  H02M2001/0006 ,  H03F3/185 ,  H03F3/217 ,  H03F3/2171

Abstract: A power supply arrangement for a single ended class D amplifier, including a first primary winding connected in series with a first switch between the positive supply rail and ground, a second primary winding in phase with said first primary winding and connected in series with a second switch between the negative supply rail and ground, and a controller adapted to apply a control signal to said first and second switches, said control signal (Q) having ON-pulses of a predefined pulse time separated by a dead time. 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.

Abstract translation: 一种用于单端D类放大器的电源装置，包括与正电源轨和地之间的第一开关串联连接的第一初级绕组，与所述第一初级绕组同相连接的第二初级绕组， 在负电源轨和地之间切换，以及控制器，适于向所述第一和第二开关施加控制信号，所述控制信号（Q）具有以死区时间分隔的预定脉冲时间的导通脉冲。 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。

公开(公告)号：US08170268B2

公开(公告)日：2012-05-01

申请号：US12292892

申请日：2008-11-28

Applicant: Marcus Michael Weyreuther

Inventor： Marcus Michael Weyreuther

IPC: H04R1/00

CPC classification number: H04R9/06

Abstract: In one embodiment of the present invention, an electro-dynamic transducer is disclosed including a diaphragm, a first suspension suspending the diaphragm, a coil former attached to the diaphragm, the coil former having a first, inner portion, and a second, outer portion, arranged coaxially in relation to each other, a coil arranged around the outer coil former portion, a magnetic system, operable to magnetically cooperate with the coil, and a second suspension mounted between the inner coil former portion and the magnetic system. The new and improved way of placing the second suspension allows for a slim form factor, while stabilizing the system more than prior art designs. The transducer according to one embodiment of the present invention is less sensitive to rocking modes, and the gap in the magnet system can thus be made smaller.

Abstract translation: 在本发明的一个实施例中，公开了一种电动变换器，其包括隔膜，悬挂隔膜的第一悬架，连接到隔膜的线圈架，具有第一内部部分和第二外部部分的线圈架 ，相对于彼此同轴布置的线圈，围绕外部线圈成形器部分布置的线圈，可操作以与线圈磁性协作的磁性系统，以及安装在内部线圈形成器部分和磁性系统之间的第二悬架。 放置第二悬架的新的和改进的方式允许超薄的外形尺寸，同时比现有技术设计更稳定系统。 根据本发明的一个实施例的换能器对摆动模式的敏感度较低，因此可以使磁体系统中的间隙更小。

公开(公告)号：US07479840B2

公开(公告)日：2009-01-20

申请号：US10548432

申请日：2004-03-23

Applicant: Ole Neis Nielsen

Inventor： Ole Neis Nielsen

IPC: H03K7/08

CPC classification number: H03M5/08 ,  H03M3/506 ,  H03M7/3004 ,  H03M7/3028 ,  H03M7/304

Abstract: A pulse width modulator (10) for converting a digital signal into a PWM signal, comprising a plurality of integrators (11) with integrator gains (12) arranged in series, a comparator (17) for comparing the output of the last integrator (11′) with a reference, and thereby creating the PWM signal. The modulator further has means (13) for realizing self-oscillation at a desired switching frequency, and a feedback path (14) connected to a point down stream said comparator and leading to a plurality of summing points, each preceding one of said integrators, wherein the PWM signal is quantized in time by the clock frequency of the modulator, and wherein the integrator gains (12) are adapted to reduce any quantization noise.

Abstract translation: 一种用于将数字信号转换为PWM信号的脉冲宽度调制器（10），包括具有串联布置的积分器增益（12）的多个积分器（11），比较器（17），用于比较最后一个积分器 '），从而产生PWM信号。 调制器还具有用于以期望的开关频率实现自振荡的装置（13）和连接到下游流的所述比较器并且导致多个求和点的反馈路径（14），每个求和点各自在所述积分器之一之前， 其中所述PWM信号在调制器的时钟频率上被量化，并且其中所述积分器增益（12）适于减少任何量化噪声。

公开(公告)号：US07323912B2

公开(公告)日：2008-01-29

申请号：US10499194

申请日：2002-12-05

Applicant: Ole Neis Nielsen

Inventor： Ole Neis Nielsen

IPC: H03K3/02 ,  H03K3/36

CPC classification number: H03K17/6871 ,  H03K17/063

Abstract: A half-bridge driver includes 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 the first power switch, a first current generator for generating a current pulse for each negative flank of the voltage pulse waveform, a second current generator for generating a current pulse for each positive flank of said voltage pulse waveform, and a differential current receiver circuit. The differential current receiver circuit is connected to the first and second current generators, and is arranged to generate an output signal equal to the difference of the currents flowing through the current generators. The output signal is arranged to drive the second power switch.

Abstract translation: 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电源开关，用于产生电压脉冲波形的脉冲发生器，用于驱动第一电源开关，第一电流发生器，用于为每个电流脉冲产生电流脉冲 电压脉冲波形的负侧面，用于为所述电压脉冲波形的每个正侧面产生电流脉冲的第二电流发生器和差动电流接收器电路。 差分电流接收器电路连接到第一和第二电流发生器，并且被布置为产生等于流过电流发生器的电流的差的输出信号。 输出信号被布置成驱动第二电源开关。

公开(公告)号：US07321262B2

公开(公告)日：2008-01-22

申请号：US10570324

申请日：2004-10-07

Applicant: Karsten Nielsen ,  Lars Michael Fenger

Inventor： Karsten Nielsen ,  Lars Michael Fenger

IPC: H03F3/38

CPC classification number: H03F3/68 ,  H03F1/305 ,  H03F3/217 ,  H03F2200/03 ,  H03F2200/351

Abstract: A power conversion system comprising at least one Pulse Modulated Amplifier (1), including a pulse modulator for generating a pulse modulated signal based on a reference input (vi), a switching power stage arranged to amplify the pulse modulated signal, and a control system arranged to compensate for power supply voltage variations, and a voltage supply (2) providing drive voltage (Vs) to each amplifier, wherein said voltage supply (2) is provided with said input reference (vi), and arranged to provide a first drive voltage component (Vs) tracking an amplified absolute value of the input reference (vi). Pulse area modulation according to the invention will result in improved efficiency and at the same time ensure lower levels of EMI, as the mean amplitude of the PAM signal is lowered.

Abstract translation: 一种功率转换系统，包括至少一个脉冲调制放大器（1），包括用于基于参考输入（v SUB）产生脉冲调制信号的脉冲调制器;布置成放大 脉冲调制信号和布置成补偿电源电压变化的控制系统，以及向每个放大器提供驱动电压（V SUB）的电源（2），其中所述电压源（2）是 提供有所述输入参考（v SUB），并且被布置成提供跟踪输入参考的放大绝对值的第一驱动电压分量（V SUB）（v _{我）。 随着PAM信号的平均幅度降低，根据本发明的脉冲区域调制将导致提高的效率并且同时确保较低的EMI水平。}

公开(公告)号：US07119629B2

公开(公告)日：2006-10-10

申请号：US10498314

申请日：2002-12-16

Applicant: Karsten Nielsen ,  Jesper Lind Hansen

Inventor： Karsten Nielsen ,  Jesper Lind Hansen

IPC: H03K7/00

CPC classification number: H03F3/217 ,  H02M3/1584 ,  H03F2200/351

Abstract: 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.

Abstract translation: 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。