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不知道TI有没有24vDC转正负15vDC，3A的设计方案
亲；建议用两颗IC完成这个电源，一颗降压；另一颗反转。看看这颗；既可以BUCK，也可以反转：LM20343
Hi
也可以考虑TPS54360： http://www.ti.com.cn/product/cn/TPS54360?keyMatch=TPS54360&tisearch=Search-CN-Everything
HI
设计文档： http://www.ti.com.cn/cn/lit/an/slva317b/slva317b.pdf
