
18 _____________________________________________________________________________________
MAX5971B
Single-Port, 40W, IEEE 802.3af/at,
PSE Controller with I
2
C
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
-54V
t
DET(1)
t
DET(2)
t
CLASS
80ms
150ms 150ms 19ms
V
OUT
t
0V
-4V
-9.3V
-18V
-54V
t
DET(1)
t
DET(2)
t
CLASS(1)
t
CLASS(2)
80ms
150ms 150ms
19ms
19ms
9ms
9ms
Kommentare zu diesen Handbüchern