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TIDA-01371: 请教设计中关于功率计算问题

Part Number: TIDA-01371

各位老师好,想请教下参考设计TIDA-01371文章中2.1节关于瞬时功率是如何计算的?

Peak power consumption = 4 x 128 x 470p x 100^2 x 7.5M = 18 kW

这个公式里面的第一个参数是 4 请问是如何获得的?我理解的其他参数如下:

Peak power consumption = ? x 通道数 x 电容值 x 电压平方 x频率 = 18 kW

我理解Peak power consumption =U^2/R。其中R= 1/2*PI*f*C;  所以算出来Peak power consumption = 2*pi x 128 x 470p x 100^2 x 7.5M = 28.3kW 不知道对不对?

希望各位前辈能答疑解惑,非常感谢!