1 引言····················································································· 1
2 PWM 控制器设计······································································· 1
2.1 PWM控制的基本原理··························································································1
2.2 控制电路设计 ··································································································3
3 buck 变换器主电路设计····························································· 5
3.1 主电路分析 ·····································································································5
3.2 反馈回路设计 ··································································································7
4 buck 变换器控制器设计····························································· 7
4.1 系统分析 ········································································································7
4.2控制器设计······································································································9
4.3控制器实现···································································································· 11
4.4 结果 ············································································································ 12
5 问题和总结·········································································· 12
参考文献： ············································································· 13
附录： ··················································································· 14
