我使用LM2623 Boost DC-DC搭建的开关电源输出出现高噪音干扰，如何抑制？在不变更IC的情况下，如何改进电路请给出建议。
电路输入为3.6V单节锂电池，输出是4V供GPRS模块，发射瞬间最大有1.6到2.0A电流。
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屏幕上半部为时间轴加大后的放大图。
电路如下：
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