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请教DC-DC电源的芯片选型

Other Parts Discussed in Thread: TPS65251, TPS54060, TPS54140, TPS54040, TPS5430, TPS54160, TPS65270

我想尝试设计一款DC-DC电源,输入是15V,输出有四路,1、+5V/3A     2、+5V/0.5A  3、+12V/1.2A   4、-5V/0.5A

请问要选择哪款或几款芯片才能实现此电路,谢谢