This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DRV8305: DRV8305:电荷泵输出引脚VCPH的电容为什么连接到PVDD?

Part Number: DRV8305

如上图所示,PVDD是母线电压同时也是2级电荷泵输入电压,VCPH是电荷泵输出电压,给高侧管驱动供电。

手册推荐在VCPH和PVDD之间接2.2μf的电容,作用是使电荷泵输出参考PVDD吗?

看到大多数用电荷泵升压的高侧驱动芯片电荷泵输出电容都是对高侧MOSFET的S极接,比较容易理解。请问DRV8305对PVDD接电容作用一样吗?这么做有什么好处?