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1. 发明申请

WO2014026178A1 SWITCHED MODE ASSISTED LINEAR REGULATOR 审中-公开
标题翻译：开关模式辅助线性稳压器
公开(公告)号：WO2014026178A1
公开(公告)日：2014-02-13
申请号：PCT/US2013/054481
申请日：2013-08-12
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： BARTH, Carsten , HOVERSTEN, John , BERG, Steven , HELLEMAN, Bert , VANNORSDEL, Kevin , STAVEREN, Arie Van , YOUSEFZADEH, Vahid
IPC分类号： G05F1/565 , G05F1/10 , G05F1/66
CPC分类号： H02M3/158 , H02M2001/0045 , H03F1/0222 , H03F2200/102 , H03F2200/432
摘要： A disclosed switched mode assisted linear (SMAL) amplifier/regulator architecture may be configured as a SMAL regulator (200) to supply power to a dynamic load, such as an RF power amplifier. Embodiments of a SMAL regulator include configurations in which a linear amplifier (210) and a switched mode converter (switcher) (230) parallel coupled at a supply node, and configured such that the amplifier sets load voltage (VPA), while the amplifier and the switched mode converter are cooperatively controlled to supply load current (lPA). In one embodiment, the linear amplifier (210) is AC coupled to the supply node (ΡΑ0υτ), and the switched converter is configured with a capacitive charge control loop that controls the switched converter to effectively control the amplifier to provide capacitive charge control. In another embodiment, the amplifier includes separate feedback loops: an external relatively lower speed feedback loop may be configured for controlling signal path bandwidth, and an internal relatively higher speed feedback loop may be configured for controlling output impedance bandwidth of the linear amplifier.
摘要翻译：公开的开关模式辅助线性（SMAL）放大器/调节器架构可以被配置为SMAL调节器（200），以向诸如RF功率放大器之类的动态负载供电。 SMAL调节器的实施例包括其中在电源节点处并联耦合的线性放大器（210）和开关模式转换器（切换器）（230）并且被配置为使得放大器设置负载电压（VPA）的配置，而放大器和开关模式转换器协同控制以提供负载电流（IPA）。在一个实施例中，线性放大器（210）被AC耦合到电源节点（RhoAlpha0upsilontau），并且开关转换器配置有电容性电荷控制环路，其控制开关转换器以有效地控制放大器以提供电容充电控制。在另一个实施例中，放大器包括单独的反馈回路：外部相对较低速度的反馈回路可以被配置为用于控制信号路径带宽，并且可以配置内部相对较高速度的反馈回路来控制线性放大器的输出阻抗带宽。

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