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您好：
我司研发部使用BQ500511和BQ50002设计了无线充电座，现在看到TI官网不推荐新的设计使用BQ500511和BQ50002。
带后缀A的芯片做了什么改动？
我可以使用BQ500511A和BQ50002A直接Pin to Pin的替换到设计中吗？
我们现在使用的是demo板上使用的WE 760308111线圈，该线圈采购价格较高，我考虑替换，在替换线圈时，线圈参数该怎么选择？
The bq500511A and bq50002A will provide improved demodulation (more reliable communications) and improved FOD (more repeatable from unit to unit).
Pin to pin的。
http://e2e.ti.com/support/power_management/wireless_power/f/693/p/549212/2016191#2016191
