Applications information, Figure 13. poe system block diagram – Rainbow Electronics MAX5965B User Manual
Page 46
MAX5965A/MAX5965B
High-Power, Quad, Monolithic, PSE Controllers
for Power over Ethernet
46
______________________________________________________________________________________
MAX5965A
MAX5965B
-48V
GATE_
INTERNAL PULLDOWN
(MANUAL MODE)
100
Ω
-48VRTN
FDT3612
100V, 120m
Ω
SOT-223
SENSE_
V
EE
OUT_
OFF
ON
DET_
SDAIN
SDAOUT
SCL
DGND
V
DD
A0
A1
A2
A3
OSC_IN
AUTO
MIDSPAN
AGND
INTERNAL PULLDOWN
(SIGNAL MODE)
0.5
Ω
1%
1N4448
1k
Ω
1 OF 4 CHANNELS
1.8V TO 5V,
(REF TO DGND)
INT
RESET
3k
Ω
3k
Ω
180
Ω
180
Ω
180
Ω
OPTIONAL BUFFER
INTERNAL
50k
Ω PULLUP
4.7k
Ω
1k
Ω
V
DD
1N4002
HPCL063L
OPTIONAL BUFFER
OPTIONAL BUFFER
HPCL063L
HPCL063L
VCCRTN
V
CC
(3.3V)
SCL
SDA
SERIAL INTERF
A
CE
3k
Ω
3k
Ω
ISOLATION
0.47
μF
100V
SHD_
SINE WAVE
100Hz
±10%
PEAK AMPLITUDE 2.2V
±0.1V
VALLEY AMPLITUDE 0.2V
±0.1V
SMBJ
58CA
0.1
μF
2.2M
Ω
-48VOUT
8
7
5
4
6
3
2
1
-48VOUT
0.1
μF
0.1
μF
0.1
μF
0.1
μF
75
Ω
75
Ω
75
Ω
75
Ω
1000pF
250VAC
24
22
21
19
23
20
RX1+
RX1-
TX1+
TX1-
RXT1
TXCT1
RD1+
RD1-
TD1+*
*USE HALO TG111-HRPE40NY OR
PULSE HX6015NL FOR HIGH POWER
TD1-
1
3
4
5
PHY
1/2 OF
H2005A
RJ–45
CONNECTOR
Applications Information
Figure 13. PoE System Block Diagram