SWITCHING AMPLIFIER
    1.
    发明申请
    SWITCHING AMPLIFIER 有权
    开关放大器

    公开(公告)号:US20110057726A1

    公开(公告)日:2011-03-10

    申请号:US12875928

    申请日:2010-09-03

    申请人: Rik JOS

    发明人: Rik JOS

    IPC分类号: H03F3/217

    CPC分类号: H03F3/2176 H03F2200/387

    摘要: A switching amplifier (200; 300; 400; 500) comprising: a switch (202; 302) configured to electrically connect and disconnect a first pin (202a; 302a) of the switch (202; 302) to a second pin (202b; 302b) of the switch (202; 302) in accordance with a pulse width modulated input signal (216; 316; 516). The second pin (202b; 302b) is connected to a ground connector (204; 304). The switching amplifier also comprises a feed inductor (206; 306; 406) connected between a voltage supply connector (208; 308) and the first pin (202a; 302a) of the switch (202; 302), and a circuit (210; 310; 522) comprising a variable component having a variable imaginary impedance. The circuit (210; 310; 522) is connected between the first pin (202a; 302a) of the switch (202; 302) and an output connector of the amplifier (212; 312. The switching amplifier further comprising a controller (214; 314; 514) configured to generate a control signal (315; 515) for the circuit (210; 310; 522) such that the variable component of the circuit is adjustable in accordance with the duty cycle of the pulse width modulated input signal (216; 316; 516).

    摘要翻译: 一种开关放大器(200; 300; 400; 500),包括:开关(202; 302),被配置为将开关(202; 302)的第一引脚(202a; 302a)电连接到第二引脚(202b; 302),根据脉冲宽度调制输入信号(216; 316; 516),开关(202; 302) 第二销(202b; 302b)连接到接地连接器(204; 304)。 开关放大器还包括连接在电压供应连接器(208; 308)和开关(202; 302)的第一引脚(202a; 302a)之间的馈电电感器(206; 306; 406),以及电路(210; 310; 522)包括具有可变虚拟阻抗的可变分量。 电路(210; 310; 522)连接在开关(202; 302)的第一引脚(202a; 302a)和放大器(212; 312)的输出连接器之间。 314; 514),其被配置为产生用于所述电路(210; 310; 522)的控制信号(315; 515),使得所述电路的可变分量可根据脉宽调制输入信号(216 ; 316; 516)。