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DC/DC BUCK所用RFB問題

Other Parts Discussed in Thread: TPS62170-Q1

各位专家好:

长期以来在设计上都有这疑问,想请问:

一般的DC/DC的电压调节电阻(RFB),在选料上除了精准度、耐压值以外,需注意的项目为何?

若以瓦数来看,从0402(0.1W)变更为0201(0.05W),对产品的可靠度上是否会有影响?

 

以TPS62170-Q1来说,输出3.3V需选用470k及150kOhm

两颗电阻的消耗功率我计算起来大概都在数u(微)W等级
我的计算是否正确...?

选用0201纯粹空间上的考虑,担心会有不好的影响

谢谢