12
dc2448adf
DEMO MANUAL
DC2448A-D
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
WHEN
VIN
<
5.5V,
SHORT
PVCC
TO
VIN
WITH
R61
=
0
OHM,
AND
SET
R63
=
0
OHM
AND
REMOVE
R62.
R69 CAN BE SET TO 0 OHM FOR ON BOARD COMPENSATION, OR UNSTUFFED FOR EXTERNAL OPTIMIZED COMPENSATION.
INPUT
HOTSWAP
USED ON -D VERSION ONLY
USED ON -D VERSION ONLY
VFB
HIZREG
OVER_TEMP
CLKOUT_U3
COMP
RUN
PGOOD
GND_SNS
TRACK/SS
CROWBAR
VOUT
VIN_HS
VIN_HS
VIN_HS
BIAS
BIAS
VIN_HS
VOUT
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
4
DEMO
CIRCUIT
2448A
Friday,
March
10,
2017
45
FOUR
PHASE,
STEP-DOWN
MODULE
N/A
LTM4636EY/LTM4636EY-1
` \
l _
REGULATOR
WITH
HOTSWAP
INPUT
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
4
DEMO
CIRCUIT
2448A
Friday,
March
10,
2017
45
FOUR
PHASE,
STEP-DOWN
MODULE
N/A
LTM4636EY/LTM4636EY-1
` \
l _
REGULATOR
WITH
HOTSWAP
INPUT
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
4
DEMO
CIRCUIT
2448A
Friday,
March
10,
2017
45
FOUR
PHASE,
STEP-DOWN
MODULE
N/A
LTM4636EY/LTM4636EY-1
` \
l _
REGULATOR
WITH
HOTSWAP
INPUT
C12 10nF
E40
PWM4
R36 10K
CIN17 [2] 25V 1210
R25
[2]
2512
CIN16 [2] 25V 1210
D2
SMBJ12A
R66
OPT
D3 GRN
C26 OPT
R29 100k 1%
CO25 [2] 6.3V 1210
R75
[2]
E41
SW4
J6
GND
R65
[2]
E23
PG
E21
ISET
U4
LTM4636EY/LTM4636EY-1
GMON
H9
SNSP1
F2
TEST3
H2
HIZREG
F3
PGOOD
E1
SW
L11
RUNP
G8
CLKOUT
G3
SNSP2
F1
TEST2
F5
RUNC
E2
TRACK/SS
E3
VFB
E4
TEST4/CROWBAR
E11
GND
M9
GND
M10
GND/OVP_SET
E12
COMPB
D5
COMPA
E5
NC/BIAS
G9
PHASEMD
G7
TE
MP
+
G12
TE
MP
-
G11
GND
M12
VOSNS1
D4
VOSNS-
D3
GND/OVP_TRIP
E10
INTVCC
F6
MODE_PLLIN
H3
PWM
H7
PVcc
F9
GND/OVER_TEMP
D10
TEST1
H4
GND
M1
FREQ
G5
GND
M2
TMON
H8
GND
M11
SG
ND
G4
SG
ND
F4
SW
K11
VO
UT
A1
VO
UT
A2
VO
UT
A3
VO
UT
A4
VO
UT
A5
VO
UT
A6
VO
UT
A7
VO
UT
A8
VO
UT
A9
VO
UT
A10
VO
UT
A11
VO
UT
A12
VOUT
B1
VOUT
B2
VOUT
B3
VOUT
B4
VOUT
B5
VOUT
B6
VOUT
B7
VOUT
B8
VOUT
B9
VOUT
B10
VOUT
B11
VOUT
B12
VOUT
C1
VOUT
C2
VOUT
C3
VOUT
C4
VOUT
C5
VOUT
C6
VOUT
C7
VOUT
C8
VOUT
C9
VOUT
C10
VOUT
C11
VOUT
C12
VO
UT
D1
VO
UT
D2
VO
UT
D11
VO
UT
D12
GND
M3
GND
D6
GND
D7
GND
D8
GND
D9
GND
E6
GND
E7
GND
E8
GND
E9
GND
F7
GND
F8
GND
F10
GND/OTP_SET
F11
GND
F12
GND
G1
GND
G2
GND
G6
GND
G10
GND
H10
GND
H11
GND
H12
GND
H1
GND
J1
GND
J2
GND
J3
GND
J8
GND
J9
GND
J10
GND
J11
GND
J12
GND
K1
GND
K2
GND
K3
GND
K9
GND
K10
GND
K12
GND
L1
GND
L2
GND
L3
GND
L9
GND
L10
GND
L12
VIN
H5
VIN
H6
VIN
J4
VIN
J5
VIN
J6
VIN
J7
VIN
K4
VIN
K5
VIN
K6
VIN
K7
VIN
K8
VIN
L4
VIN
L5
VIN
L6
VIN
L7
VIN
L8
VIN
M4
VIN
M5
VIN
M6
VIN
M7
VIN
M8
CIN15 [2] 25V 1210
R61 OPT
Q1
SUD50N04-8M8P-4GE
R40 6.49k 1%
JP4
ON
OFF
AUX_UV
1
3
2
RMON1
20K
1%
C11
10nF
R28 10K
CO21 [2] 6.3V 1210
R35 10K
C25
0805
4.7uF
C24
22uF 1206
Q4 PSMN2R0-30YLE,115
3 2
4
5
1
D5
RED
R42 9.53k 1%
D1 OPT
R39 20K 1%
+
CO26 [2] 4V 7343
E38
TEMP-_U4
D4 GRN
E43
TMON_U4
Q2
SUD50N04-8M8P-4GE
R31 10K
C28 OPT
RSET1
OPT
R62
0
CO24 [2] 6.3V 1210
R68
0
R41
1k
R63
OPT
C3 10nF
R70
34.8k
1%
E20
IMON
R38 10
E39
TEMP+_U4
C35 22pF
CO23 [2] 6.3V 1210
R76
[2]
2010
R27
0.001
1%
2512
J5
9V -14V
VIN
E22
FAULT
CO22 [2] 6.3V 1210
R67
2.2
0805
C27
2200pF
R30 107k 1%
C34
10nF
+
CO27 [2] 4V 7343
R6 100k 1%
C13
0.1uF
R69
0
U5
LTC4218CGN
FB
12
SENSE+
16
NC
1
VDD
2
UV
3
GND
7
SENSE-
15
OV
4
TIMER
5
ISET
14
GATE
9
SOURCE
8
INTVCC
6
PG
10
FLT
11
IMON
13
R10
0
JP3
SIGNAL
AUTO-RETRY
FAULT
1
3
2
D6
RED
CIN14 [2] 25V 1210
PVcc
OVER_TEMP
ISET
IMON
VIN
IMON
ISET
OVP_TRIP
