DCDC: buck生成负压电源
参考应用笔记:Using the TPS6215x in an Inverting Buck-Boost Topology https://www.ti.com/lit/an/slva469c/slva469c.pdf
Using the TPS62125 in an Inverting Buck-Boost Topology https://www.ti.com.cn/cn/lit/an/slva514b/slva514b.pdf
参考应用笔记:Using the TPS6215x in an Inverting Buck-Boost Topology https://www.ti.com/lit/an/slva469c/slva469c.pdf
Using the TPS62125 in an Inverting Buck-Boost Topology https://www.ti.com.cn/cn/lit/an/slva514b/slva514b.pdf