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请问TPS54332作负压输入DC/DC负压降压输出??

Other Parts Discussed in Thread: TPS54332, TPS7A3401

我看了资料,参考http://www.ti.com/lit/an/slva317b/slva317b.pdf

就是在正常普通buck基础上,Vin和Vout之间并一个输入电容,Vout变成GND,原来的GND成为负压输出端。

资料是正电源输入转换成负电源输出。

我不是正电源转换成负电源。

我用是正负直流电源输入共地,我想用TPS54332将--12VDCl转换成--5VDC输出,能否给一份推荐电路,谢谢。