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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/757605/faq-tps23755-what-is-the-benefit-of-primary-side-regulation-psr
初级侧调节(PSR)有什么好处？
PSR 允许在变压器初级侧调节输出电压。 这样就无需从次级侧到初级侧使用反馈电路、因此降低了系统级 BOM 成本并减小了解决方案尺寸。 要了解详情、请参阅 TPS23755数据表。
其他资源
•请查看 TI 的 PoE 登录页面 ：www.TI.com/PoE
•了解 IEEE802.3bt 标准： 以太网供电：新标准入门
