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poe 供电转换电路

Other Parts Discussed in Thread: LM5160, TPS23754, TPS2378

最近有个新的项目,需要使用poe交换机供电,(交换机是买现成的,输出电压48V,单端口功率15.4W),我想得到一个12V、1A的电源,不知道有没有经典电路或者电源芯片推荐?谢谢大家