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求大神推荐DC非隔离开关电源方案或芯片,要求输出电压通过外部控制电压可调,输出2.5V-40V。

DC非隔离开关电源,输出电压通过外部控制电压可调,输出2.5V-40V,也就是说外部控制电压是0V时,开关电源输出2.5V,外部控制电压是5V时,开关电源输出40V,有这样的方案或芯片推荐吗?