![](http://5b0988e595225.cdn.sohucs.com/images/20190516/008e792807a0408590ce88d8ca8b45c4.png)
MOSFET的开通过程
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/763914d5d2ee4340a80d160be00e8219.jpeg)
MOSFET的关断过程
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/3985fdd71f1f487bb0ecad65ca9ab931.jpeg)
2.栅极驱动电路的类型
•直接耦合型
•脉冲变压器耦合型
•电容耦合型
•用于双管正激的驱动电路
•用于桥式变换器的驱动电路
直接耦合型驱动电路
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/7126810b0fe04db49135d9c12d9f53fd.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/74002141533b46b793d8cf97fc3bc034.jpeg)
脉冲变压器耦合型驱动电路
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/ba7c71e50c934b698ae5d0db245b52bf.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/637c7d06fcc94e7e89fb18c086a2ebe9.jpeg)
电容耦合型驱动电路
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/09c88a10e9f946b58804c1c4baa56508.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/b5c5f14ce5bd435fb3e3b7dab6d52ef4.jpeg)
电容耦合型驱动电路–改进型I
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/59c91afc18db4e07aec4b4545f727916.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/566620678ce14fa8b2ace7069f6bc9fa.jpeg)
电容耦合型驱动电路–改进型II
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/56b188cb5c5348b5af64e8c5ec928708.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/a92388c5b4614542907dbec18b0fe05e.jpeg)
用于双管正激的驱动电路
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/b994d0b853f04a0b8f79ab922c516ae4.jpeg)
用于桥式变换器的驱动电路
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/ca0e54bbe57c4994b7da5f0b69ca0795.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/ced0ad87a3b049e48ef31af8e1c89aa4.jpeg)
3.驱动电路设计中的实际问题
•电容耦合型驱动电路中的振荡
•桥式变换器中的驱动电路
电容耦合型驱动电路中的振荡
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/13f2ef306adf4672b892383680416d8a.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/93028636f95c45e285a33817b786bc18.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/43cd4aff3575439f9f7664c83fdde8ea.jpeg)
桥式变换器中的驱动–常用电路
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/a00df556d97b4e40bf124564c9880afe.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/bbbd993d95294c93ab775ba2c5eedc5b.jpeg)
桥式变换器中的驱动–改进电路
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/e7bc05065d014bfa94f1bcb161517c8f.jpeg)
![](http://5b0988e595225.cdn.sohucs.com/images/20190516/f45466687eb6483b9a9db31cababcb63.jpeg)