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DC-DC隔离降压芯片或电路的选择

Other Parts Discussed in Thread: LM5000, LM431

求一款芯片或者设计电路。满足隔离降压,输入48V2A输出+5V2A和-5V1A。求大神解答

  • HI

       可以用LM5000这类芯片来做, 参考这个案例:http://www.ti.com.cn/cn/lit/df/snvr239/snvr239.pdf

       你的输入电压48V是超过Vin规格的,关于供电电路你可以参照datasheet: http://www.ti.com.cn/cn/lit/ds/symlink/lm5000.pdf  figure23

       (在这个电路上增加一个负输出的绕组,然后按照上面的案例用隔离反馈LM431+光耦