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为什么TI的技术支持服务态度那么差??



用TI公司的UCC28051D做了一款电源的PFC,PFC电感一直有响声,

找TI的代理商,代理商推给原厂,原厂的工程师打了几天的电话都不接,

技术支持根本上就是个摆设,TI的技术支持能出来澄清一下么。。