公开(公告)号：WO2004086629A1

公开(公告)日：2004-10-07

申请号：PCT/IB2004/000852

申请日：2004-03-23

Applicant: BANG & OLUFSEN ICEPOWER A/S ,  NIELSEN, OLe, Nies

Inventor： NIELSEN, OLe, Nies

IPC: H03M5/08

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：WO2004047286A1

公开(公告)日：2004-06-03

申请号：PCT/IB2003/006318

申请日：2003-11-14

Applicant: BANG & OLUFSEN ICEPOWER A/S ,  FENGER, Lars, Michael

Inventor： FENGER, Lars, Michael

IPC: H03F3/217

CPC classification number: H03F3/217 ,  H03F1/32 ,  H03F3/38

Abstract: A pulse modulation power converter comprising a forward path including a forward block (15), a switching stage (11) for amplifying an output from the forward block, and an output filter (12) for low pass filtering an output signal from the switching stage, a global feedback path (13), connected to the low pass filtered output signal, comprising a global feedback block (18, 19) for generating a feedback signal, and means (14) for subtracting said feedback signal from an input signal, and feeding the result to said forward path. The global feedback block and/or forward block includes means for compensating at least a portion of a phase lag of said output filter, and means for obtaining a 180 degrees phase lag at a switching frequency, thereby achieving conditions for a controlled oscillation at said switching frequency. The control system combines the advantages of the self-oscillation technology with a high gain, wide-band control loop for suppressing non-linearities. This will lead to a better performing system in terms of total harmonic distortion and noise.

Abstract translation: 一种脉冲调制功率转换器，包括前向路径，该前向路径包括前向块（15），用于放大前向块的输出的开关级（11）和用于对来自开关级的输出信号进行低通滤波的输出滤波器（12） ，连接到所述低通滤波输出信号的全局反馈路径（13），包括用于产生反馈信号的全局反馈块（18,19），以及用于从输入信号中减去所述反馈信号的装置（14），以及 将结果馈送到所述前进路径。 全局反馈块和/或前向块包括用于补偿所述输出滤波器的相位滞后的至少一部分的装置，以及用于在开关频率处获得180度相位滞后的装置，从而在所述开关处获得受控振荡的条件 频率。 控制系统将自振荡技术的优点与高增益宽带控制环路相结合，以抑制非线性。 这将导致在总谐波失真和噪声方面表现更好的系统。

公开(公告)号：WO2003055059A1

公开(公告)日：2003-07-03

申请号：PCT/IB2002/005254

申请日：2002-12-05

Applicant: BANG & OLUFSEN ICEPOWER A/S ,  NIELSEN, Karsten ,  SKOV ANDERSEN, Kennet

Inventor： NIELSEN, Karsten ,  SKOV ANDERSEN, Kennet

IPC: H03F3/217

CPC classification number: H03F3/2175

Abstract: This invention relates to an attenuation control system (9) in a switching power conversion system comprising a digital modulator (4), for generating a modulated control signal from a (digital) source signal and a switching power stage (6), said attenuation control system comprising: means for digitally attenuating the modulated signal, first gain shifting means (7) for shifting a supply voltage of said power stage between a plurality of predefined voltage levels, said first gain shifting means being arranged to decrease the power stage gain when the attenuation of the modulated signal exceeds a predefined level. This invention also relates to an attenuating method in a switching power conversion system comprising a digital modulator, for generating a modulated control signal from a (digital) source signal, and a switching power stage.

Abstract translation: 本发明涉及开关电源转换系统中的衰减控制系统（9），该系统包括数字调制器（4），用于从（数字）源信号和开关功率级（6）产生调制控制信号，所述衰减控制 系统，包括：用于数字衰减所述调制信号的装置，用于在多个预定电压电平之间移动所述功率级的电源电压的第一增益移位装置，所述第一增益偏移装置被布置为当所述功率级增益 调制信号的衰减超过预定义的水平。 本发明还涉及一种开关电源转换系统中的衰减方法，包括用于从（数字）源信号和开关功率级产生调制控制信号的数字调制器。

公开(公告)号：EP4352874A1

公开(公告)日：2024-04-17

申请号：EP22733326.7

申请日：2022-06-02

Applicant: ICEpower a/s

Inventor： BOSTRÖM, Patrik

IPC: H03F3/183 ,  H03F3/217

CPC classification number: H03F3/2171 ,  H03F3/183 ,  H03F2200/0320130101 ,  H03F2200/44120130101

公开(公告)号：EP3224945B1

公开(公告)日：2020-11-25

申请号：EP15790517.5

申请日：2015-11-02

Applicant: ICEPOWER A/S

Inventor： SKOV ANDERSEN, Kennet

IPC: H03F3/187 ,  H03F3/217 ,  H03F1/30 ,  H03F3/45 ,  H03G3/34

公开(公告)号：EP3720000A1

公开(公告)日：2020-10-07

申请号：EP19167494.4

申请日：2019-04-05

Applicant: ICEpower a/s

Inventor： BOSTRÖM, Patrik

IPC: H03K17/693

Abstract: An analogue current switch comprising an operational amplifier (2) having a positive input connected to ground, and a negative input, a first MOSFET (3) having a drain connected to the negative input of the operational amplifier and a source serving as an input of the analogue switch, a second MOSFET (4) having a drain connected to the source of the first field effect transistor and a source connected to ground, wherein a gate (12) of the first field effect transistor is connected to a control signal (13), and a gate (15) of the second field effect transistor is connected to an inverse (14) of said control signal.
The present invention provides an analogue current switch using MOSFETs, significantly lower internal non-linear resistance than JFETs (in the order of ten times lower), thereby improving system linearity. Also, MOSFETs are significantly easier to acquire at low cost.

公开(公告)号：EP2533408B1

公开(公告)日：2020-01-22

申请号：EP11172638.6

申请日：2011-07-05

Applicant: ICEPOWER A/S

Inventor： Frium, Mads Peter

IPC: H02M3/337 ,  H03F3/217

公开(公告)号：EP3281293B1

公开(公告)日：2019-02-13

申请号：EP16708422.7

申请日：2016-03-08

Applicant: ICEPOWER A/S

Inventor： SKOV ANDERSEN, Kennet

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

公开(公告)号：EP3308461A1

公开(公告)日：2018-04-18

申请号：EP16726318.5

申请日：2016-06-01

Applicant: ICEPOWER A/S

Inventor： SKOV ANDERSEN, Kennet ,  JØRGENSEN, Eskil

IPC: H03F3/217 ,  H03K5/151 ,  H03K17/16

CPC classification number: H03F3/2171 ,  H03K5/1515 ,  H03K17/162

Abstract: The invention relates to a compensator device for compensating signal dependent delay variations, including dead time and reverse recovery time, causing un-linearity in a Class-D amplifier where the compensator device comprises: a first input terminal for receiving an input pulse width modulated input PWM signal comprising pulses with falling flanks corresponding to a falling level transition and rising flanks corresponding to a rising level transition; and a second input terminal configured to receive the signal provided at an output switching node of a Class-D amplifier; an output terminal for providing a compensated output signal; and controllable delay means configured to receive and delay the pulse modulated input signal, thereby providing a delayed version of the input signal to said output terminal of the compensator device. The compensator device further comprises time measuring means configured for measuring the time between a transition of the signal provided at the output terminal of the compensator device and the corresponding transition of the signal at the output switching node of a Class-D amplifier and based on these measurements providing a control signal to the controllable delay means. An advantageous effect of the present invention is that the rising and falling level transition delays will be substantially similar thus substantially removing non-linearity and obtaining substantially correct pulse widths. The invention further relates to a corresponding method, a driver device and a Class-D amplifier.

公开(公告)号：EP2533408A3

公开(公告)日：2017-11-01

申请号：EP11172638.6

申请日：2011-07-05

Applicant: ICEPOWER A/S

Inventor： Frium, Mads Peter

IPC: H02M3/337 ,  H03F3/217

Abstract: 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 unbalance between the windings.

Abstract translation: 一种用于单端D类放大器（1）的电源装置，包括与正电源线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） 与所述第一初级绕组串联并与负电源轨和地之间的第二开关（10）串联连接;以及控制器（15），适用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 预定义脉冲时间（pt）的开启脉冲，间隔死区时间（dt）。 在使用中，连接到具有最高数字电压的供电轨的初级绕组将通过相反的初级绕组将具有最低数字电压的轨道电压差转换为电源轨，从而减少绕组之间的任何不平衡。