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求效率最高的DCDC芯片

Other Parts Discussed in Thread: TPS62170, TPS62152-Q1

各位大神你们好:

        请教你们一个问题,我现在输入12V,输出1.2V和2.5V,1.2V、2.5V的电流大概是0.6A和0.3A,请问市场上哪块芯片效率最好(最好能达到85%以上)

 谢谢