Part Number: LM5176
LM5176，输入电压7-40V，输出12V/3A，升降压工作时，对应的电感波形上升沿和下降研都有5M的振铃，并且电感和对应工作的MOS管发热严重。测试时R4和R5已去掉，C11改为0欧姆电阻并且接地。
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请首先将PCB布局图与TI LM5176评估板（EVM）的布局进行对比，重点检查功率回路。优化布局是解决此类高频振铃问题的根本。如果布局无法更改，再尝试增加栅极电阻或缓冲电路作为补救措施。
参考以下相关帖子说明
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1576186/lm5176-lm5176-humming-noise-on-inductor?tisearch=e2e-sitesearch&keymatch=LM5176#
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1627143/lm5176-q1-lm5176-buck-boost-high-output-ripple-audible-noise-in-buck-boost-region-26-28v-vin?tisearch=e2e-sitesearch&keymatch=LM5176#
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1594127/lm5176-compensation-selection?tisearch=e2e-sitesearch&keymatch=LM5176#
e2e.ti.com/.../lm5176-q1-can-it-improve-the-output-current-by-parallelling-mosfet-and-inductor
