公开(公告)号：EP2536014A1

公开(公告)日：2012-12-19

申请号：EP11170024.1

申请日：2011-06-15

Applicant: Bang & Olufsen IcePower A/S

Inventor： Frium, Mads Peter

IPC: H02M3/335

CPC classification number: H02M3/33576 ,  H02M3/33569 ,  H02M2001/0058 ,  H03F3/217 ,  H03F3/2173 ,  Y02B70/1491

Abstract: 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.

Abstract translation: 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。

公开(公告)号：EP2536014B1

公开(公告)日：2016-12-28

申请号：EP11170024.1

申请日：2011-06-15

Applicant: ICEPOWER A/S

Inventor： Frium, Mads Peter

IPC: H02M3/335

CPC classification number: H02M3/33576 ,  H02M3/33569 ,  H02M2001/0058 ,  H03F3/217 ,  H03F3/2173 ,  Y02B70/1491

公开(公告)号：EP2533408A2

公开(公告)日：2012-12-12

申请号：EP11172638.6

申请日：2011-07-05

Applicant: Bang & Olufsen IcePower A/S

Inventor： Frium, Mads Peter

IPC: H02M3/335

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） 与所述第一初级绕组串联连接在负电源轨和地之间的第二开关（10），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不平衡。

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：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。