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帮忙推荐下12V转-5V方案

Other Parts Discussed in Thread: LP5912, TPS7A49, TPS7A30

TI工程师们:

  你好!帮忙推荐以下2个设计方案

  1.  12V转-5V一个方案,要求输出电流可以很少不低于200mA就行,但输出纹波要求非常小,最好是低于0.5mV,功耗也希望尽可能地低;

  2.  12V转5V的LDO设计方案,输出电流150mA左右就行,但考虑到有7V的压降,可能对IC的温升是有一个极大影响,也在思考如何处理这个问题。

以上,还请各位帮忙推荐,十分感激!