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OLIMEX / ESP32-POE-ISO

ESP32 Power Over Ethernet board with 3000VDC Galvanic insulation
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Rev K+ R22 #14

Open marklister opened 8 months ago

marklister commented 8 months ago

Based on this from the TPS237x data sheet (pg 12) :

The total divider resistance appears in parallel with the R(DET), and the combination of the two should equal 24.9 kΩ. The divider ratio should be chosen to obtain 2.5 V at the UVLO pin when V(VDD) is at the desired turnon voltage.

R22 should probably be 30k?

DanKoloff commented 8 months ago

Maybe, the design we made was to fit all three TPS2375, TPS2376, and TPS2377 with minimal changes. Originally we used TPS2375 and used the schematic at the end of the slvu108 document as basis.