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UC28700设计一个220V的交流输入,直流5V 3A的电流输出的电路 谁有? 中药的是变压器怎么做?

Other Parts Discussed in Thread: UCC28700

UC28700的规格书没有看懂,小弟请教一下,参考设计给了 ,应该如何正确的设计,输入交流220v 50HZ 转为 直流 5V 3A的输出,变压器应该如何做。