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有没有锂电池供电的poe pse解决方案



如题,我的主控部分是锂电池供电,但是外边有个设备是poe供电的,功耗在2W左右,我看到ti 的poe 供电设备都需要48V以上的工作电压。请问有没有针对锂电池(8.4V)的解决方案?