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CONTROLLED SELF-OSCILLATION MODULATOR AND POWER CONVERSION SYSTEM USING SUCH A MODULATOR
CONTROLLED SELF-OSCILLATION MODULATOR AND POWER CONVERSION SYSTEM USING SUCH A MODULATOR
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机译:使用这种调制器的受控自振荡调制器和功率转换系统
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摘要
A controlled oscillation modulator includes a comparator and a power amplification stage for pulse modulation, and a higher order oscillating loop comprising first feedback means (21) and first forward means (22) securing stable oscillating conditions. The modulator is characterized by current measurement means, arranged to measure a value (iL) of a current supplied by said power amplification stage to a load (5) connected to the modulator, said measured value being supplied to said first feedback means (21) has a transfer function adapted to generate said first feedback signal based on said measured value (iL), and said first forward means (21) has a transfer function adapted to generate said modulating signal based on said first feedback means and an input signal (Vi). Application are general DC-DC and DC-AC power conversion with inductive loading. In a preferred emplements a precision transconductance amplifier by a current feedback. In a futher preferred embodiment the controlled oscillation modulator implements a precision voltage power amplifier for audio amplification purposes.
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机译:一种受控振荡调制器,包括比较器和用于脉冲调制的功率放大级,以及包括确保稳定振荡条件的第一反馈装置(21)和第一前向装置(22)的高阶振荡回路。调制器的特征在于电流测量装置,其被布置为测量由所述功率放大级提供给连接到调制器的负载(5)的电流的值(i> L <),所述测量值被提供给所述第一反馈装置。 (21)具有适于基于所述测量值(i> L <)产生所述第一反馈信号的传递函数,并且所述第一正向装置(21)具有适于基于所述第一反馈装置产生所述调制信号的传递函数。输入信号(V> i <)。应用是带有感性负载的常规DC-DC和DC-AC电源转换。在优选的实施方式中,通过电流反馈来实现精密跨导放大器。在另一个优选实施例中,受控振荡调制器实现用于音频放大目的的精密电压功率放大器。
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