用过几个NSC的片子,如LM5007,输入电压范围可达72V,而TPS54040只有40V,差距好大(这两个片子其它方面差不多,而且TPS54040的纹波噪声特性更好一点)。是不是TI一直没有攻克这个技术难题?
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你好:
与LM5007性能更为接近的芯片有TPS54060,其输入最大电压为65V。
TPS54060与LM5007相比,有更小的RDSon,并且在轻载条件下拥有更高的效率。