利用Snubber电路消除开关电源和Class D功放电路中的振铃

By: Frank Pan

Abstract: 开关电源和Class D功放,因为电路工作在开关状态,大大降低了电路的功率损耗,在当今的电子产品中得到了广泛的应用。由于寄生电感和寄生电容的存在,电路的PWM开关波形在跳变时,常常伴随着振铃现象。这些振铃常常会带来令人烦恼的EMC问题。本文对振铃进行探讨,并采用snubber电路对PWM开关信号上的振铃进行抑制。

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APP 6287:
APPLICATION NOTE 6287,AN6287, AN 6287, APP6287, Appnote6287, Appnote 6287