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MAX5953D
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Rainbow-electronics MAX5953D Manual de usuario Pagina 19
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Tabla de contenidos
MARCADORES
Valorado
.
/ 5. Basado en
revisión del cliente
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MAX5953A/MAX5953B/MAX5953C/MAX5953D
IEEE 802.3af PD Inter
face and PWM Contr
ollers
with Integrated Power MOSFET
s
______________________________________________________________________________________
19
PGOOD
V+
UVLO
R1*
OPEN
R3
(R
DISC
)
25.5k
Ω
C10
22
µ
F
63V
R5
210k
Ω
C2
100pF
C3
2.2
µ
F
C4
4700pF
R7
25.5k
Ω
R11
2k
Ω
*R1 AND R2 ARE OPTIONAL AND WHEN USED, THEY MUST TOT
AL 25.5k
Ω
AND REPLACE R3, 25.5k
Ω
.
C1
0.068
µ
F
D1
56.7V
-48V
RTN
-48V
INBIAS
R2*
0
Ω
R4
(R
CL
)
255
Ω
4
6
8
RCLASS
18
DCUVLO
37
R16
316k
Ω
R17
14.7k
Ω
HVIN
39
DRNH
PPWM
PPWM
BST
C9
0.22
µ
F
D11
T1
D3
D2
D10
R6
100
Ω
C24
0.1
µ
F
R28
10k
Ω
-48V
OUT
T2
PA0264
PPWM
G1
D12
R16
1k
Ω
R17
22
Ω
G2
N4
33, 34
21
36
XFRMRH
31, 32
XFRMRL
28, 29
INBIAS
40
D6
V
EE
10
RCFF
44
RAMP
45
DRVIN
30
GA
TE
9
OUT
16
REGOUT
FL
TINT
43
42
24
RTCT
CSS
22
GND
25
OPTO
41
C5
1000pF
C6
100pF
R8
1M
Ω
C7
0.01
µ
F
23
PGND
E
3
2
8
7
6
5
U2
FOD2712
C
LED
FB
GND
COMP
20
CS
26, 27
SRC
C8
100pF
R9
1k
Ω
R10
0.18
Ω
C13
0.22
µ
F
R14
470
Ω
R22
221
Ω
C19
0.068
µ
F
C20
0.068
µ
F
C21
0.1
µ
F
R21
2.52k
Ω
R20
2.74k
Ω
C12
0.1
µ
F
V
OUT1
(10V A
T 30mA)
MAX5953A
U1
R6
210k
Ω
GA
TE
-48V
OUT
R15
210k
Ω
R25
OPEN
N.C.
1, 4
R24
1k
Ω
R23
1M
Ω
D8
D5
V
OUT2
C22
220
µ
F
C23
220
µ
F
A1
D7
V
OUT3
A2
INBIAS
C11
0.1
µ
F
N3
A2
V
OUT2
RTN
D4
R18
22
Ω
R19
1k
Ω
G1
N2
N1
A1
-48V
OUT
V
OUT3
V
OUT2
(5.1V A
T 1.8A)
V
OUT3
(2.55V A
T 5.4A)
C17A
100
µ
F
C16
100pF
C14
0.47
µ
F
C17
220
µ
F
C18
2200pF
C15
22
µ
F
C25
0.1
µ
F
A1
D9
R27
10k
Ω
G2
C26
0.1
µ
F
A2
Figure 6. PD with Three-Output Flyback DC-DC Converter
1
2
...
14
15
16
17
18
19
20
21
22
23
24
25
26
27
General Description
1
Features
1
Ordering Information
1
Applications
1
ABSOLUTE MAXIMUM RATINGS
2
ELECTRICAL CHARACTERISTICS
2
Pin Description
10
Pin Description (continued)
11
Typical Application Circuit
12
MAX5953A
13
Detailed Description
15
Optocoupled Feedback
17
Internal Regulators
17
Applications Information
18
Table 3. Component Suppliers
21
Block Diagrams
22
Block Diagrams (continued)
23
Typical Operating Circuit
24
Chip Information
25
Selector Guide
25
Pin Configuration
25
Package Information
26
M. Quijano
27
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