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Method of driving a class D audio power amplifier using non- overlapping edge drive signals

机译:使用非重叠边缘驱动信号驱动D类音频功率放大器的方法

摘要

A method of actuating a plurality of power amplifier devices in an Class D audio switching amplifier (100) using non-overlapping edge drive signals for preventing substantially high current spikes during switching transitions. The method includes actuating and deactuating power amplifier devices within a first complementary power switching device (117) and actuating and deactuating a second complementary power switching device (119) using a plurality of drive signals generated by a non-overlapping driver (107). The method provides that the first complementary power switching device (117) and the second complementary power switching device (119) are switched ON and OFF in a predetermined sequence such that more than one power amplifier device within each complementary power switching pair is prevented from being simultaneously activated. This prevents high current spiking and subsequently high current drain during a switching transition for conserving battery life when used with portable equipment.
机译:一种使用非重叠边缘驱动信号来致动D类音频开关放大器(100)中的多个功率放大器设备的方法,以防止在开关过渡期间出现明显较高的电流尖峰。该方法包括:使用由非重叠驱动器(107)产生的多个驱动信号来致动和去激励第一互补功率开关设备(117)内的功率放大器设备,以及致动和去激励第二互补功率开关设备(119)。该方法规定,以预定顺序接通和断开第一互补功率开关设备(117)和第二互补功率开关设备(119),以防止每个互补功率开关对内的一个以上功率放大器设备被损坏。同时激活。这样可以防止在开关过渡期间产生高电流尖峰,并避免随后产生大量电流消耗,从而在与便携式设备一起使用时可以节省电池寿命。

著录项

  • 公开/公告号US5729175A

    专利类型

  • 公开/公告日1998-03-17

    原文格式PDF

  • 申请/专利权人 MOTOROLA INC.;

    申请/专利号US19960638626

  • 发明设计人 ENRIQUE FERRER;

    申请日1996-04-26

  • 分类号H03F3/38;

  • 国家 US

  • 入库时间 2022-08-22 02:39:58

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