输出负压最小-30V的和升压最大正30V的电源模块或者芯片，板子上的供电电压是18V3A，要求有个输出-15V2A和-30V2A和30V2A三个电源 不知道TI有没有这样的模块我看了看没有找到 有这样的芯片也行自己也可以搭电路，求Ti工程师给个方案。
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