Rainbow Electronics MAX5971А - Manual (Page 16)

16 _____________________________________________________________________________________
MAX5971A
Single-Port, 40W, IEEE 802.3af/802.3at PSE
Controller with Integrated MOSFET
Figure 1. Detection, Classification, and Port Power-Up Sequence
Figure 2. Detection, 2-Event Classification, and Port Power-Up Sequence
V OUT
t
0V
-4V
-9.3V
-18V
-48V
t DET(1) t DET(2) t CLASS
80ms 150ms 150ms 19ms
V OUT
t
0V
-4V
-9.3V
-18V
-48V
t DET(1) t DET(2) t CLASS(1) t CLASS(2)
80ms 150ms 150ms 19ms 19ms
9ms 9ms