公开(公告)号：WO2011011135A1

公开(公告)日：2011-01-27

申请号：PCT/US2010/039232

申请日：2010-06-18

Applicant: QUANTANCE, INC. ,  JENSEN, Brent, Roger ,  DROGI, Serge, Francois ,  TOMASZ, Martin

Inventor： JENSEN, Brent, Roger ,  DROGI, Serge, Francois ,  TOMASZ, Martin

IPC: G05F1/00

CPC classification number: H03F3/24 ,  H03F1/0244 ,  H03F1/0277 ,  H03F1/32 ,  H03F2200/451 ,  H03F2200/507 ,  H03F2200/511 ,  H03F2200/555 ,  Y10T307/696

Abstract: A power supply system uses improved Class G amplifier architecture for high bandwidth operation with low distortion. The power supply system switches between multiple power supply rails, depending on the signal level handled by the power supply system. The lowest usable supply rail voltage is chosen to minimize power dissipation in the output driver, thus optimizing efficiency. Each supply rail has an associated driver capable of sourcing current to the amplifier output. When a supply rail is selected, its associated driver is enabled and other driver(s) not associated with the selected supply rail are disabled via separate disable control signals. The disabling of the deselected driver may be delayed until current above a predetermined threshold is sensed at the output of the enabled driver. In addition, the frequency of switching between the power rails may be limited via various means designed to limit distortion in the power supply system.

Abstract translation: 电源系统使用改进的G类放大器架构，实现高带宽操作，低失真。 电源系统根据电源系统处理的信号电平在多个电源轨之间切换。 选择最低可用的电源轨电压以最小化输出驱动器中的功耗，从而优化效率。 每个电源轨都有一个相关的驱动器，能够将电流提供给放大器输出。 当选择供电轨时，其关联的驱动器被使能，并且与选择的电源轨不相关的其他驱动器通过单独的禁用控制信号被禁用。 可以延迟取消选择的驱动器的禁用，直到在启用的驱动器的输出处感测到高于预定阈值的电流。 此外，电力轨道之间的切换频率可以通过设计成限制供电系统中的失真的各种手段来限制。