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关于电源管理IC BOOST类型 TPS61088 4.2V 升压至12V带重载烧IC问题

Other Parts Discussed in Thread: TPS61088

你好:

   我想请问,就是我在用TPS61088做VIN=4.2V,输出Vout=12V测试时发现当SW 在负载1.5A时尖峰电压Vp-p高达18V最后导致IC烧坏。Cout=22uF*3,并且还并联了一个1uF电容。Cin=22uF*2。布局如下: ,如果是Layout有问题或者其他方面问题,望解答,同时对于升压型转换器PCBLayout 是否有相关好的建议或者文档供学习