High-Power, Quad, PSE Controller
for Power-Over-Ethernet
______________________________________________________________________________________ 47
Component List for V
DIG
Supply
DESIGNATION
DESCRIPTION
C1
0.1礔, 25V ceramic capacitor
C2
0.022礔, 25V ceramic capacitor
C3
15nF, 25V ceramic capacitor
C4
220礔 capacitor Sanyo 6SVPA220MAA
C5
4.7礔, 16V ceramic capacitor
C6
0.47礔, 100V ceramic capacitor
C7
0.22礔, 16V ceramic capacitor
C8
2.2礔, 16V ceramic capacitor
C9
4.7nF, 16V ceramic capacitor
D1
B1100 100V Schottky diode
L1
68礖 inductor
Coilcraft DO3308P-683 or equivalent
DESIGNATION
DESCRIPTION
Q1
Si2328DS
Vishay n-channel MOSFET, SOT23
Q2, Q3, Q4
MMBTA56 small-signal PNP
R1, R3
2.61k& ?% resistors
R2
6.81k& ?% resistor
R4, R6, R9
1& ?% resistors
R5
1k& ?% resistor
R7
1.02k& ?% resistor
R8
30& ?% resistor
R10
2& ?% resistor
U1
High-voltage PWM IC
MAX5020ESA (8-pin SO)
Pin Configuration
36
35
34
33
32
31
30
29
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
OSC
AUTO
OUT1
GATE1
SENSE1
OUT2
GATE4
GATE2
SENSE2
V
EE
OUT3
GATE3
SENSE3
OUT4
DET4
DET3
DET2
DET1
A0
A1
A2
A3
SDAIN
SDAOUT
SCL
MIDSPAN
SSOP
TOP VIEW
MAX5952
22
21
20
19
15
16
17
18
SENSE4
AGND
V
DD
DGND
RESET
INT
SHD1
SHD2
SHD3
SHD4
+
Selector Guide
PART
SENSE RESISTOR (&)
V
DD
(V)
MAX5952A_
0.5
3.3
MAX5952C_
0.5
5
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