Linear Technology Analog Devices LTM4676A, Demo Manual

Page: 9 / 12

9
DEMO MANUAL DC1811B-B
Rev. A
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603.
35V
4.5V - 26.5V
1.0V / 13A
6.3V
6TPF330M9L
1.8V / 13A
ON
ON
6.3V
6TPF330M9L
121
0
121
0
1210
OPT
0805
OFF
121
0
121
0
121
0
1210
1210
121
0
1210
0.035 VIA TESTPOINTS
WITH POWER SYSTEM MANAGEMENT
*
WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R8 = 0ohm.
*
U1
B - A B - B
LTM4676EY LTM4676AEY
*
*
VOSNS0-
VDD33
SYNC SHARE_CLK ALERTB SCL SDA GPIO0B GPIO1B ASEL FREQ_CFG VOUT0_CFG VTRIM0_CFG VOUT1_CFG VTRIM1_CFG RUN1 VDD25 RUN0 INTVCC
VOSNS1
VIN
VOUT0
VOUT1
VIN
SYNC SHARE_CLK
ALERTB
SCL SDA
GPIO0B
GPIO1B
COMP0a
COMP1a
RUN0 RUN1
VDD33
SIZE DATE:
.V
ER
.O
N
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
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
1
Monday, December 01, 2014
1
3
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
B
LTM LTM4676AEY DEMO CIRCUIT 1811B-A/B
SIZE DATE:
.V
ER
.O
N
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
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
1
Monday, December 01, 2014
1
3
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
B
LTM LTM4676AEY DEMO CIRCUIT 1811B-A/B
SIZE DATE:
.V
ER
.O
N
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
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
1
Monday, December 01, 2014
1
3
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
B
LTM LTM4676AEY DEMO CIRCUIT 1811B-A/B
REVISION HISTORY
DESCRIPTIO
N
DATE
APPROVED
EC
O
REV
JIAN L.
PRODUCTION
41-
2-6
1
__
REVISION HISTORY
DESCRIPTIO
N
DATE
APPROVED
EC
O
REV
JIAN L.
PRODUCTION
41-
2-6
1
__
REVISION HISTORY
DESCRIPTIO
N
DATE
APPROVED
EC
O
REV
JIAN L.
PRODUCTION
41-
2-6
1
__
J7
VOUT0
J7
VOUT0
CIN3 10uF CIN3 10uF
COUT1 100uF COUT1 100uF
E4
VIN
E4
VIN
E13
GPIO0B
E13
GPIO0B
R18 10K R18 10K
E17
GND0_SNS
E17
GND0_SNS
R
7
0
R
7
0
R10 10K R10 10K
E9
SYNC
E9
SYNC
R
9
0
R
9
0
CIN2 10uF CIN2 10uF
R
8
OPT
R
8
OPT
COUT7 100uF COUT7 100uF
R33 OPT R33 OPT
R4 OPT R4 OPT
COUT8 100uF COUT8 100uF
R3
2
0
R3
2
0
R14 10K R14 10K
E16
VDD25
E16
VDD25
J5
GND
J5
GND
CIN5 10uF CIN5 10uF
J10
VIN
J10
VIN
C2
OPT
C2
OPT
E7
GND1_SNS
E7
GND1_SNS
R3
0
6.34K
R3
0
6.34K
U1
LTM4676EY / LTM4676AEY
U1
LTM4676EY / LTM4676AEY
VOUT0
A1
VOUT0
A2
VOUT0
A3
VOUT0
D1
ISNS0b-
E1 F1
IS NS 1b-
G1
IS NS 1b+
H1
VO UT1
J1
VO UT1
J2
VO UT1
J3
VO UT1
K1
VOUT0
B1
VOUT0
B2
VOUT0
B3
VOUT0
D2
ISNS0a-
E2 F2
IS NS 1a-
G2
IS NS 1a+
H2
VO UT1
K2
VO UT1
K3
VO UT1
L1
VO UT1
L2
VOUT0
C1
VOUT0
C2
VOUT0
C3
VOUT0
D3
GN D
A4
GN D
A6
GN D
A7
GN D
A8
VO UT1
L3
VO UT1
M1
VO UT1
M2
VO UT1
M3
GN D
A9
GN D
A10
GN D
B4
GN D
B5
ASEL
G4
FSWPHCFG
H4
GN D
B6
GN D
B7
GN D
B8
GN D
B9
GPIO0
E4
GPIO1
F4
SNUB0
A5
GN D
C4
TSNS0b
C5
TSNS0a
D5
ALERT
E5
RUN0
F5
VOUT0CFG
G5
VTRIM0CFG
H5
TS NS 1a
J5
TS NS 1b
K5
GN D
C6
SN UB 1
M5
GN D
C7
GN D
C8
GN D
C9
SDA
D6
SCL
E6
RUN1
F6
VOUT1CFG
G6
VTRIM1CFG
H6
VDD25
J6
WP
K6
GN D
D4
GN D
E3
GN D
F3
GN D
F10
GN D
G3
GN D
G10
SYNC
E7
GN D
M9
GN D
M10
SHARE_CLK
H7
VDD33
J7
GN D
G11
GN D
G12
GN D
L8
GN D
L7
GN D
L9
GN D
H3
COMP0b
D8
COMP0a
E8
SG ND
F7
SG ND
F8
CO MP 1a
H8
CO MP 1b
J8
GN D
H10
GN D
J4
GN D
M8
D9
VOSNS0-
E9
INTVCC
F9
INTVCC
G9
VO SN S1
H9
VO RB 1
J9
GN D
J10
GN D
L4
GN D
L5
GN D
K4
SW0
B10
DN C
E11
VORB0+
D10
VORB0-
E10
GN D
L6
GN D
K7
GN D
K8
GN D
K9
DN C
C10
SW 1
L10
GN D
M4
VINH0
B12
VINH0
B11
VINH0
A12
VINH0
A11
DN C
K10
VINL
F12
GN D
M6
DN C
H11
VIN H1
H12
VIN H1
J11
VIN H1
J12
VIN H1
K11
VINH0
E12
VINH0
D12
VINH0
D11
VINH0
C12
VINH0
C11
VINL
F11
GN D
M7
VIN H1
K12
VIN H1
L11
VIN H1
L12
VIN H1
M11
VIN H1
M12
SG ND
G7
SG ND
G8
GN D
D7
R24 10K R24 10K
P1P1
+
COUT5 330uF
+
COUT5 330uF
C1
2200pF
C1
2200pF
C14
2200pF
C14
2200pF
COUT6 100uF COUT6 100uF
E8
VDD33
E8
VDD33
R16 10K R16 10K
R29
(OPT)
R29
(OPT)
P4P4
R25
0
R25
0
J8
GND
J8
GND
P2P2
R20
0805
R20
0805
C15 OPT C15 OPT
E12
SDA
E12
SDA
+
COUT4 330uF
+
COUT4 330uF
R11 10K R11 10K
C17 OPT C17 OPT
R3 0 R3 0
R2
3
OPT
R2
3
OPT
P5P5
R19 10K R19 10K
E15
VOUT0_SNS
E15
VOUT0_SNS
COUT3 100uF COUT3 100uF
E14
GPIO1B
E14
GPIO1B
E3
INTVCC
E3
INTVCC
R2
7
(OPT)
R2
7
(OPT)
R6 OPT R6 OPT
J9
GND
J9
GND
COUT2 100uF COUT2 100uF
R5 0 R5 0
R15 10K R15 10K
+
CIN1 150uF
+
CIN1 150uF
R13 10K R13 10K
JP1
RUN0
JP1
RUN0
1 3 2
E10
ALERTB
E10
ALERTB
E1
VOUT1_SNS
E1
VOUT1_SNS
R2 4.99K R2 4.99K
P3P3
E6
SHARE_CLK
E6
SHARE_CLK
R12 10K R12 10K
R22 4.22K R22 4.22K
E11
SCL
E11
SCL
R2
8
(OPT)
R2
8
(OPT)
JP2
OFF
RUN1
JP2
OFF
RUN1
1 3 2
CIN4 10uF CIN4 10uF
E5
GND
E5
GND
R2
6
(OPT)
R2
6
(OPT)
R3
1
0
R3
1
0
J6
VOUT1
J6
VOUT1
C16 OPT C16 OPT
E2
GND
E2
GND