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这类稳压器通常称为DC/DC 转换器。降压型和升压型均可用,但电路结构不同。虽然损耗小(效率高),但需要线圈等外部组件。电路规模大,价格高昂。电压精度差。其通过开关直流电压(1MHz以下)并对其进行滤波以产生预期的直流电压,因此开关噪声会叠加并且输出噪声往往会变大。