DC1635A_REV2_SCH.pdf

5
4
3
VAUX1
DUAL PKG
E1
1
REVISION HISTORY
Q1A
7
6
VAUX1
2
ECO
S1A
SiA921EDJ
1
JMP1
S1A
REV
*
2
DESCRIPTION
APPROVED
2ND PROTOTYPE
JOSH Y.
DATE
11-9-10
J1
3V - 18V @ 2A
R1
680K
2
VAUX1
GND1
J2
D
GND1
D
Q1B
E2
VIN1
8
3
VIN1
VOUT1
SiA921EDJ
4
S1B
VOUT1
E9
E3
U1
VIN1
LTC4412HVIS6
JMP2
2.5V - 18V @ 2A
*
VOUT1
5
S1B
J3
1
CIN1
0.1uF
50V
0805
GND1
J4
GND1
E4
2
VIN
SENSE
GND
GATE
6
VOUT1
5
GATE1
J9
COUT1
0.1uF
50V
0805
R5
0
GND1
STAT1
CTL1 3
CTL1
E13
CTL
4
STAT
GND1
J10
GATE1
2.5V - 18V @ 2A
E10
STAT1
STAT1
E14
R2
C
560K
VCC1
CTL1
C
VCC1
E15
(OPT)
ISOLATED
VAUX2
8
7
6
5
E5
VAUX2
VAUX2
Q2 Si7463DP
3
2
1
4
VAUX2
S2A
JMP3
NOTE FOR THIS PAGE:
*
VOUT2
R3
100K
J5
5V - 36V @ 8A
S2A
E11
VOUT2
J11
GND2
COUT2
0.1uF
50V
0805
J6
S2B
GND2
E6
B
8
7
6
5
VIN2
VIN2
TOP LAYER CIRCUITS FOR U1 AND U2 ARE ELECTRICALLY
ISOLATED FROM EACH OTHER. THEY DO NOT SHARE GND,
VIN, VAUX, OR VOUT. JUMPERS CAN BE USED TO
PARALLEL THE TWO CIRCUITS AS NECESSARY.
VOUT2
Q3 Si7463DP
3
2
1
S2B
JMP4
*
5V - 36V @ 8A
GND2
# IF THE CTL PIN OF THE LTC4412 AND/OR LTC4414 IS NOT
USED, IT IS RECOMENDED THAT CTL BE CONNECTED TO
GND IN THE FINAL DESIGN.
J12
E12
*CLARIFICATION: SHOWN HERE AS CONNECTED FOR TOP
LAYER CIRCUIT, BUT STUFFED ON BOTTOM LAYER.
B
GND2
E7
VIN2
LTC4414EMS8
4
U2
J7
5V - 36V @ 8A
VIN2
CIN2
0.1uF
50V
0805
GND2
7
VIN
SENSE
GND
GATE
CTL
STAT
6
VOUT2
GATE2
STAT2
3
8
GATE2
E16
J8
GND2
R6
E8
CTL22
CTL2
R4
STAT2
NC
NC
5
E18
CTL2
560K
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
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
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
VCC2
4
3
VCC2
E17
(OPT)
0
4
A
1
STAT2
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
AK
JOSH Y.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
DUAL LOW LOSS 36V POWERPATH CONTROLLERS
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
LTC4412HVIS6 & LTC4414EMS8
DEMO CIRCUIT 1635A
Monday, December 17, 2012
SHEET 1
1
REV.
2
OF 3
A
5
4
3
2
OPTIONAL CIRCUIT
Q4
Q5
Si7463DP (OPT)
3
2
1
8
7
6
5
3
2
1
S1A
4
VAUX1
Si7463DP (OPT)
S1A
4
VAUX1
8
7
6
5
1
STJ1
STJ1
D
D
Q7
Si7463DP (OPT)
8
7
6
5
VIN1
VIN1
7
3
CTL1
CTL1
2
S1B
LTC4414EMS8 (OPT)
S1B
8
7
6
5
3
2
1
VIN
SENSE
GND
GATE
CTL
STAT
6
VOUT1
8
GATE1
1
STAT1
4
3
2
1
4
U3
Q8
Si7463DP (OPT)
GTJ1
GTJ1
VOUT1
GATE1
STAT1
C
C
4
NC
NC
5
ISOLATED
OPTIONAL CIRCUIT
VAUX2
DUAL PKG
Q12A
7
6
VAUX2
DUAL PKG
Q13A
OPT (SiA921EDJ)
1
S2A
OPT (SiA921EDJ)
7
1
6
Q12B
B
8
3
Q13B
OPT (SiA921EDJ)
4
VIN2
VIN2
1
2
CTL2
CTL2 3
VIN
SENSE
GND
GATE
CTL
STAT
S2B
S2B
6
VOUT2
5
GATE2
4
STAT2
GATE2
STAT2
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
GTJ2
VOUT2
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.
A
B
OPT (SiA921EDJ)
8
4
3
5
LTC4412HVIS6 (OPT)
5
U4
STJ2
2
2
S2A
3
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
AK
JOSH Y.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
DUAL LOW LOSS 36V POWERPATH CONTROLLERS
SIZE
N/A
SCALE = NONE
DATE:
2
IC NO.
LTC4412HVIS6 & LTC4414EMS8
DEMO CIRCUIT 1635A
Monday, December 17, 2012
SHEET 2
1
REV.
2
OF 3
A
5
4
3
2
1
OPTIONAL CIRCUIT
DUAL PKG
DUAL PKG
1
SiA921EDJ
VOUT1
4
S1B
S1B
2
S1A
7
6
JMP5
0
STAT1
8
3
VOUT1
VAUX1
VAUX1
JMP6
STJ1
S1A
8
7
5
SiA921EDJ
Q19A
Si7905DN
1
1
STJ1
STAT1
0
D
8
7
2
D
DUAL PKG
Q18A
Si7905DN
Q6B
VOUT1
2
Q6A
STJ1
GTJ1
GATE1
Q18B
Si7905DN
S1B
6
5
3
6
5
3
4
VIN1
4
VIN1
Q19B
Si7905DN
GTJ1
C
GATE1
C
GTJ1
ISOLATED
OPTIONAL CIRCUIT
NOTE FOR ALL CIRCUITS:
S2A
Q16B
Si7905DN
STAT2
8
7
6
5
0
4
JMP8
STJ2
Q16A
Si7905DN
STJ2
8
7
VIN2
GTJ2
GATE2
Q17B
Si7905DN
1 S2B
S2B
VOUT2
6
5
3
GTJ2
GTJ2
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.
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
B
THERE ARE MORE GUIDELINES SPECIFICALLY FOR CERTAIN CIRCUITS. PLEASE SEE THE QUICK
START GUIDE FOR MORE APPLICATIONS AND INFORMATION.
VOUT2
3
2
1
GATE2
1. NEVER INSTALL U1 (TOP LAYER) AND U3 (BOTTOM LAYER) AT THE SAME TIME. INSTALL ONE
OR THE OTHER, BUT NOT BOTH.
2. NEVER INSTALL U2 (TOP LAYER) AND U4 (BOTTOM LAYER) AT THE SAME TIME. SAME AS 1.
3. JMP1-4 ARE MEANT FOR SIMPLE DIODE-OR OPERATION. THEY MUST BE REMOVED FOR
PROPER BACK-TO-BACK ISOLATION.
STJ2
Q15
Si7463DP
S2B
8
7
1
4
0
4
STAT2
JMP7
2
S2A
3 S2A
2
3
2
1
6
5
VAUX2
8
7
6
5
B
Q17A
Si7905DN
4
Q14
Si7463DP
THE DEMO BOARD AS SHIPPED SHOWS THE MOST COMMON FUNCTIONS FOR TWO
ELECTRICALLY ISOLATED CIRCUITS. THIS DEMO BOARD WAS DESIGNED TO SHOW CASE THE
MAXIMUM NUMBER OF EVALUATION OPTIONS THAT CORRESPOND TO THE CIRCUITS IN THE
DATA SHEETS BOTH ICs. HOWEVER, THERE ARE SOME IMPORTANT RULES TO ALWAYS
FOLOW:
DUAL PKG
DUAL PKG
4
3
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
AK
JOSH Y.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
DUAL LOW LOSS 36V POWERPATH CONTROLLERS
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
LTC4412HVIS6 & LTC4414EMS8
DEMO CIRCUIT 1635A
Monday, December 17, 2012
SHEET 3
1
REV.
2
OF 3
A
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