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考虑到D类音频功放对振荡器频率稳定的要求,本文在参考基本充电放电振荡器的基础上,提出了一种改进型的固定频率振荡器,该振荡器能有效处理电流发生突变时所产生的尖冲,以适应D类功放中对三角波线性度的要求。
Considering the requirement of class D audio power amplifier to stabilize the oscillator frequency, an improved fixed frequency oscillator is proposed in this paper based on the basic charge-discharge oscillator. The oscillator can effectively deal with the sudden change of current Sharp-edged to meet the Class D amplifier on the triangular wave linearity requirements.