-
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
Applicant: BANG & OLUFSEN ICEPOWER A/S , NIELSEN, Ole, Neis
Inventor： NIELSEN, Ole, Neis
IPC: H03K5/1252
CPC classification number: H03K17/6871 , H03K17/063
Abstract: 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).
Abstract translation: 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）。
-
公开(公告)号：US20240243704A1
公开(公告)日：2024-07-18
申请号：US18562680
申请日：2022-06-02
Applicant: ICEPOWER A/S
Inventor： Patrik BOSTRÖM
IPC: H03F3/183
CPC classification number: H03F3/183 , H03F2200/03 , H03F2200/171
Abstract: A self-oscillating amplifier system comprising at least two integrator stages connected to receive an input signal and provide a reference signal, a comparator configured to provide a modulation signal based on the reference 5 signal and a modulation feedback signal, and a switching stage connected to form a switching output signal. The system further comprises a voltage limiting circuit connected between the input signal and the reference signal, for limiting a voltage across the at least two integrator stages. By connecting one single voltage limiting circuit across all integrator stages, the modulation signal will be limited to the voltage limit of this voltage limiting circuit.
-
公开(公告)号：US20170338777A1
公开(公告)日：2017-11-23
申请号：US15528927
申请日：2015-09-24
Applicant: ICEpower a/s
Inventor： Kennet Skov Anderson , Eskil Jørgensen
CPC classification number: H03F1/305 , H03F1/34 , H03F3/183 , H03F3/217 , H03F2200/03
Abstract: A switching power conversion system and a method for start-up pop minimization in an audio amplifier assembly are disclosed. The switching power conversion system comprises a forward path including a compensator, a switching power stage and a demodulation filter. The system further comprises a DC-servo and a pre-charging circuit and a sequence control unit configured for providing a start-up sequence where the compensator and DC-servo are correctly biased and a bootstrap capacitor within the switching power stage is charged before the switching power stage is started. Hereby, it is e.g. possible to minimize the audible start-up pop in audio amplifier assemblies.
-
公开(公告)号：US20140070885A1
公开(公告)日：2014-03-13
申请号：US14115372
申请日：2012-05-21
Applicant: BANG & OLUFSEN ICEPOWER A/S
Inventor： Mads Peter Frium
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：US10326415B2
公开(公告)日：2019-06-18
申请号：US15991321
申请日：2018-05-29
Applicant: ICEpower A/S
Inventor： Patrik Boström , Martin Persson
Abstract: A new and improved self-oscillating amplifier system is presented, suitable for use in high fidelity audio applications. The self-oscillating amplifier system comprises a feedback path and a forward path including a pulse modulator, a switching power amplification stage and a demodulation filter. The forward path further includes a pair of parallel forward filters preceding the pulse modulators, a differentiating forward filter and an integrating forward filter. The differentiating forward filter is utilized for controlling a switching frequency of the system while the integrating forward filter is utilized for controlling the behavior of the amplifier system within an operating frequency band (e.g. audio band). The self-oscillating amplifier system exhibits improved performance in terms of open loop gain, reduced phase turn and improved robustness as compared to other previously known self-oscillating amplifier systems.
-
Patent Agency Ranking
公开(公告)号：US20180367107A1
公开(公告)日：2018-12-20
申请号：US15991321
申请日：2018-05-29
Applicant: ICEpower A/S
Inventor： Patrik BOSTRÖM , Martin PERSSON
CPC classification number: H03F3/2171 , H03F3/183 , H03F2200/03
Abstract: A new and improved self-oscillating amplifier system is presented, suitable for use in high fidelity audio applications. The self-oscillating amplifier system comprises a feedback path and a forward path including a pulse modulator, a switching power amplification stage and a demodulation filter. The forward path further includes a pair of parallel forward filters preceding the pulse modulators, a differentiating forward filter and an integrating forward filter. The differentiating forward filter is utilized for controlling a switching frequency of the system while the integrating forward filter is utilized for controlling the behavior of the amplifier system within an operating frequency band (e.g. audio band). The self-oscillating amplifier system exhibits improved performance in terms of open loop gain, reduced phase turn and improved robustness as compared to other previously known self-oscillating amplifier systems.
-
公开(公告)号：US10050589B2
公开(公告)日：2018-08-14
申请号：US15528927
申请日：2015-09-24
Applicant: ICEpower a/s
Inventor： Kennet Skov Andersen , Eskil Jørgensen
Abstract: A switching power conversion system and a method for start-up pop minimization in an audio amplifier assembly are disclosed. The switching power conversion system comprises a forward path including a compensator, a switching power stage and a demodulation filter. The system further comprises a DC-servo and a pre-charging circuit and a sequence control unit configured for providing a start-up sequence where the compensator and DC-servo are correctly biased and a bootstrap capacitor within the switching power stage is charged before the switching power stage is started. Hereby, it is e.g. possible to minimize the audible start-up pop in audio amplifier assemblies.
-
公开(公告)号：US20180054173A1
公开(公告)日：2018-02-22
申请号：US15556449
申请日：2016-03-08
Applicant: ICEpower a/s
Inventor： Kennet Skov Anderson
CPC classification number: H03F3/2173 , H03F1/523 , H03F3/181 , H03F3/217 , H03F3/2175 , H03F2200/03 , H03F2200/66
Abstract: 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.
-
公开(公告)号：WO2016091620A1
公开(公告)日：2016-06-16
申请号：PCT/EP2015/077929
申请日：2015-11-27
Applicant: BANG & OLUFSEN ICEPOWER A/S
Inventor： SKOV ANDERSEN, Kennet
IPC: H03F3/217
CPC classification number: H03F1/26 , H03F3/183 , H03F3/217 , H03F2200/03 , H03F2200/129 , H03F2200/171
Abstract: A self-oscillating amplifier system is disclosed. The system comprises a pulse modulator, a switching power amplification stage and a demodulation filter. Moreover, the system comprises a compensator including a forward filter which is a high order filter including a second order pole pair and a second order zero pair. Hereby it is possible to decrease the phase turn at low frequencies for better stability and increasing the gain of the control loop within the desired bandwidth.
Abstract translation: 公开了一种自振荡放大器系统。 该系统包括脉冲调制器，开关功率放大级和解调滤波器。 此外，该系统包括补偿器，该补偿器包括正向滤波器，该正向滤波器是包括二阶极对和二阶零对的高阶滤波器。 因此，可以在低频下降低相位转差，以获得更好的稳定性并在期望的带宽内增加控制回路的增益。
-
公开(公告)号：WO2016082972A1
公开(公告)日：2016-06-02
申请号：PCT/EP2015/071938
申请日：2015-09-24
Applicant: BANG & OLUFSEN ICEPOWER A/S
Inventor： SKOV ANDERSEN, Kennet , JØRGENSEN, Eskil
CPC classification number: H03F1/305 , H03F1/34 , H03F3/183 , H03F3/217 , H03F2200/03
Abstract: A switching power conversion system and a method for start-up pop minimization in an audio amplifier assembly are disclosed. The switching power conversion system comprises a forward path including a compensator, a switching power stage and a demodulation filter. The system further comprises a DC-servo and a pre-charging circuit and a sequence control unit configured for providing a start-up sequence where the compensator and DC-servo are correctly biased and a bootstrap capacitor within the switching power stage is charged before the switching power stage is started. Hereby, it is e.g. possible to minimize the audible start-up pop in audio amplifier assemblies.
Abstract translation: 公开了一种音频放大器组件中的开关功率转换系统和启动弹出最小化方法。 开关电源转换系统包括一个包括补偿器，开关功率级和解调滤波器的正向路径。 该系统还包括直流伺服和预充电电路以及顺序控制单元，其被配置为提供补偿器和直流伺服被正确偏置的启动顺序，并且开关功率级内的自举电容器在 开关功率级开始。 因此，例如 可能最小化音频放大器组件中的可听见的启动音乐。
-
-
-
-
-
-
-
-
-
Search Results
76
records
(took 0.022 seconds)
