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请教如何使用TPS61085 完成隔离电源

Other Parts Discussed in Thread: TPS43000, TPS61085

输入dc5v,输出dc3.3v,请教一个参考电路实现该功能

  • 61085是一个升压芯片,你要降压使用。还要隔离。

    这个难度比较大

  • 如果不限制使用61085,而是只完成5V到3.3v的隔离变换

    不清楚你的要求的电流值

    可以参见这个链接,有完整的原理图,BOM和测试结果

    http://www.ti.com/tool/PMP5317?keyMatch=null&tisearch=tidesigns-power

    This reference design provides isolated 7V, +3.3V, and -3.3V outputs at 100mW total power from a 2.6Vdc to 5.1Vdc input. With total power loss below 40mW, the full load efficiency is over 70%. The minimum load losses are kept below 25mW. The TPS43000 is used to control this multiple-output flyback converter. The entire circuit fits onto a 1 square inch, single-sided circuit board.

  • Hi

        参考这个:  http://www.ti.com.cn/cn/lit/an/slva496/slva496.pdf

        TPS61085低成本隔离设计。