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可以考虑这款芯片。
https://www.ti.com/product/TPS54202
下方Application Report里面有关于这款芯片的示例电路。
www.ti.com/.../slva933.pdf
現在需要VCC大于40V，有沒有其它建議
有VCC大于40V的建議嗎？
可以考虑这款
https://www.ti.com/product/TPS54160A
大致思路是这样
e2echina.ti.com/.../48v-15v
