8
dc1814afe
DEMO MANUAL
DC1814A
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
DATA AND POWER OUT
VEE
AGND
MAIN PS INPUTS
(+)
(-)
(55V TO 57V)
DATA IN
CSRN2512FKR250
RESET
SHDN
MMSZ4686T1
1/4W
1
VDD
DGND
TP2
TP1
SDA
SCL
ASSEMBLY VERSION -WATT PSE U1
-A 38.7W LTC4274AIUHF-1
-B 52.7W LTC4274AIUHF-2
-C 70W LTC4274AIUHF-3
-D 90W LTC4274AIUHF-4
MPZ2012S102A
MPZ2012S102A
FBMH4532HM132-T
NOTE: FOR TEMPERATURE SENSITIVE 90W APPLICATIONS, TWO OF THE 749012013 MAY BE USED AS AN ALTERNATE TO T1 WHICH HAS A HIGHER CURRENT RATING
VPORT +
VPORT -
PRODUCTION
DILIAN R.
4/29/11
_
2. INSTALL SHUNTS AS SHOWN.
1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603.
NOTE: UNLESS OTHERWISE SPECIFIED
TM
MPZ2012S102A
FB1, FB2, FB3, FB4
SEE TABLE
SEE TABLE
1a
_
POWER LEVEL UPDATE
DILIAN R.
9/26/11
T1: WURTH 749022016 COILCRAFT ETH1-460L
1b
_
T1 OPTION
DILIAN R.
3/28/13
FOR HIGH SURGE ENVIRONMENTS
ADD A 10 OHM, 0805 RESISTOR
AT THIS LOCATION
1c
SURGE RESISTOR
DILIAN R.
12/8/15
VEE
VEE
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
Tuesday, December 08, 2015
11
SINGLE PORT LTPoE++ PSE CONTROLLER
JK
DILIAN R.
N/A
LTC4274AIUHF FAMILY
DEMO CIRCUIT 1814A
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
Tuesday, December 08, 2015
11
SINGLE PORT LTPoE++ PSE CONTROLLER
JK
DILIAN R.
N/A
LTC4274AIUHF FAMILY
DEMO CIRCUIT 1814A
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
Tuesday, December 08, 2015
11
SINGLE PORT LTPoE++ PSE CONTROLLER
JK
DILIAN R.
N/A
LTC4274AIUHF FAMILY
DEMO CIRCUIT 1814A
FB3
R6 10K
E2
RT4
75
J2
SS-7188S-A-NF
1 2 3 4 5 6 7 8
9
10
CT2
0.01uF
100V
0805
R2 75
E3
C5 0.22uF
100V
D23 5.6V
1
3
D1 3.9V
C3
1000pF
2kV
U1
LTC4274AIUHF
SDAOUT
1
SDAIN
3
SCL
38
AD0
7
AD1
6
AD2
5
AD3
4
AGND
18
VEE
19
VEE
22
VEE
25
VEE
26
VEE
27
VEE
39
SE
NS
E
30
GATE
31
OUT
32
INT
37
SH
DN
14
DGND
17
DGND
16
DGND
15
DGND
10
VDD
13
AUTO
33
MID
36
RE
SE
T
35
MSD
34
NC
2
NC
11
NC
12
NC
20
NC
21
NC
23
NC
24
NC
28
NC
29
DNC
8
NC
9
R5
100K
F8
3A, 1206
C1Q 3
J4
J3
RT1
75
SMAJ58A
D3
C4 1.0uF
100V
F10
3A, 1206
C1Q 3
RS1
0.25
D5 S1B
FB2
R7 10K
E4
R11 1.0K
CT3
0.01uF
100V
0805
R10
1
F7
3A, 1206
C1Q 3
CT1
0.01uF
100V
0805
SMBJ64A
D2
F9
3A, 1206
C1Q 3
R4 75
RT3
75
R9
10K
C6
1000pF
2kV
T1
2
22
3
24
23
1
5
4
6
8
7
9
11
10
12
20
21
19
17
18
16
14
15
13
Q2 CMPTA92
FB1
D4
S1B
E1
R8
10K
Q1
FDMC86102
C1
0.1uF
+
C2
4.7uF
63V
J1
SS-7188S-A-NF
1 2 3 4 5 6 7 8
9
10
SW1
1
2
SW2
1
2
CT4
0.01uF
100V
0805
R1 75
R3 75
RT2
75
FB4
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