在FPGAs上使用TPS54610,SS/ENA引脚外挂电容Css时,datasheet中SS/ENA部分的1.2V电压和0.7v电压有什么区别?0.7v电压该怎么理解?
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一旦上电,SS开始充电,充到1.2V,输出开始建立,充到1.2V+0.7V,输出建立完成。因此从0到1.2V,SS电容设置的是VIN至Vout启动的延时,而1.2V到1.9V,SS电容设置的是Vout从零到最终值的时间。