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TPS61175 过热问题

Other Parts Discussed in Thread: TPS61175

您好!采用电源管理IC  ”TPS61175"进行升压设计,Vin=5V,Vout=12V,电感采用10uH,Iout >500mA,芯片就过热,并进入保护了。

而我的设计需求是,Iout >=700mA(功率7w),请问有什么办法解决过热问题吗,或提高转换效率,根据实测(效率0.65左右)?