IEEE 802.3af/at-Compliant, Powered Device Interface
Controllers with Integrated 70W High-Power MOSFET
Typical Application Circuit
ISOLATED 2-EVENT
CLASSIFICATION
GND
GND
OUTPUT
V AC
24.9k I
V DD
2EC/WAD
2EC
PG
PG
V AC
SMAJ58A
68nF
DET
CLS
MAX5982A
MAX5982B
MAX5982C
1.4mA
WAD
24/48V
43.7 I
BATTERY
G N D
-54V
L1
D1
V SS
RTN
RTN
C BULK
RTN
R IN
D2
N T
C IN
RTN
RTN
L2
R DCLMP1
PG
IN
EN
N P
T1
N S
D3
R GATE1
R GATE2
N
C OUT1 C OUT2 C OUT3 C OUT4 C OUT5
N2
5i412DP
R FB1
R FB2
NDRV
RT
R DCLMP2
C SS
R DT
C DITHER
R RT
DCLMP
SS
MAX5974C
MAX5974D
DT
DITHER/
SYNC
AUXDRV
R GATE3
D4
N3
N
N
N1
R GATE4
P
RTN
C CLAMP
N4
IN
R OPTO3
U1
R OPTO1
C COMP1
R COMP2
C COMP2
C AUX
18V
R BIAS
RTN
R FFB
FFB
FB
CS
C F
R F
R COMP2
C INT
R G1
R G2
COMP
CSSC
RTN
D5
R AUX
RTN
GND
PGND
R CSSC
RTN
RTN
U2
R OPTO2
RTN
RTN
RTN
RTN
R CS
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