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要求适应DC12V - DC270的供电电压，并且能保证输出电流达到1.5A及以上。输出电压不得低于15V，请问是否有这类宽电压输入的芯片？
你可以用WEBENCH软件来选取适合的IC，这么大的电压范围应该要用隔离的方案了
webench.ti.com/.../webench5.cgi
可以找替代料的
