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CPU和MOSFET之间通常会插入电阻。为什么需要使用这些电阻？
栅极电阻用于控制栅极驱动电路中的过电流，并减少开关期间漏极与源极之间的过冲（EMI降噪）。
对于MOSFET工作，MOSFET的开关时间（上升和下降时间）取决于所连接栅极的电阻。
当开关时间很短或很长时，可能会出现以下问题。请设置适合系统的开关时间。
- I如果栅极的电阻很小，开关时间缩短，可能会出现振荡（阻尼振荡）。
振荡可能会导致EMI噪声。 - 如果栅极电阻很大，开关时间变长，开关损耗增加，产生的热量更多。
在桥接电路中，由于栅极电阻的组合，可能会在上下MOSFET之间发生短路。
因此，有必要考虑最佳栅极电阻。
关于MOSFET并联工作时如何抑制寄生振荡，详见一下FAQ。
并联使用MOSFET有哪些注意事项?
相关信息也请参考以下文档。