DC740A - Schematic

5
FB0
TS5
TP0
Monitor
Bias
Supply #1
SRC1
2.5V
TS1
GND
0.012
1%
RX0
100
FB #0
GND
RM2
30.1K
*
RL0
Q0
IRF7413
RPG
10K
RG0
10
FB1
CS1
0.1uF
10V
RX1
100
TP1
8
7
6
5
Load #0
VCC
LD0
3
2
1
4.2A (nom.)
4.7A (max.)
1%
1
Max. load current = 4.8A/channel
8
7
6
5
trips @ 3.7A (min.)
RM1
1%
CS0
0.1uF
10V
FB #1
*
TS10
+ CL0
100uF
10V
1%
GND
TS15
LED0
Load #0
Power On
3
2
1
Green
LED
D
Load #1
2.5V
TS11
RL1
100
1/2W
Q1
IRF7413
4
TS6
2
RSENSE
SRC0
TS0
D
3
4
Supply #0
VCC
4
+ CL1
100uF
10V
GND
TS16
RG1
10
Supply #2
SRC2
1.8V
TS2
FB2
RX2
100
FB #2
GND
TP2
8
7
6
5
Load #2
1.8V
LD2
3
2
1
TS12
RL2
100
1/2W
Q2
IRF7413
4
TS7
CS2
0.1uF
10V
+ CL2
220uF
6.3V
GND
TS17
RG2
10
RX3
100
FB #3
GND
C
TS8
TP3
8
7
6
5
CS3
0.1uF
10V
FB3
Load #3
1
TS13
Q3
IRF7413
JP3-1
RL3
100
1/2W
JP2
PG Function
RG3
10
Track
2
Load #3
1.5V
LD3
3
2
1
4
TS3
+ CL3
220uF
6.3V
TS18
GND
C
1
Supply #3
SRC3
1.5V
Pull-up
Sequence
3
3
Sequence
2
FB4
FB #4
TS9
TP4
RX4
100
V1
In
20ms
delay
RV1
TP5
1K
CTIMER
0.033uF
6.3V
JP1
Monitor Do Not
Monitor
Supply #1 1
3
2
RB1
169K
1%
B
RB2
110K
1%
RB3
82.5K
1%
RB4
11.3K
1%
Supply #2 4
6
5
Supply #3 7
9
8
Supply #4
RA1
49.9K
1%
RA2
49.9K
1%
RA3
49.9K
1%
10
4
Track
2
Sequence
220uF
6.3V
TS19
GND
RG4
10
CPG
0.033uF
25V
FB0
TIMER
V1
12
11
V2
V3
V4
S4
LD3
Remote Sense
5
Sequence/No Sense
LD0
1 S0
2 TIMER
3 V1
4 V2
5 V3
6 V4
7 S4
8 D4
D0 20
SCR0
Vcc 19
SENSE
SENSE 18
GATE
GATE 17
PG
PG 16
PG
GND 15
LD1
D1 14
PG
Out
RPGO
TP8
1K
FB1
S1 13
D2 12
FB2
S2 11
9 S3
10 D3
LTC2922IF
RGTO
*
0.10V/ms
ramp
CGATE
0.1uF
25V
1K
TP7
GATE
Sequence/No Sense
PG Function / Load #3/#4 selector jumpers:
6
TP9
+ CL4
B
6
4
RL4
100
1/2W
Q4
IRF7413
0.12V/ms
ramp
5
Load #3
TS14
U1
S3
Remote Sense
TP6
Load #4
1.2V
LD4
3
2
1
JP4-1
Load #4
10uF
10V
LD4
JP3-2
1K
TIMER
+ CBYP
RA4
10K
1%
JP4-2
Load #4
RTMO
8
7
6
5
CS4
0.1uF
10V
4
GND
SRC4
1
TS4
3
Supply #4
1.2V
Jumpers LEFT = Five-Supply Tracker
Jumpers RIGHT = Three/Two Supply Sequencer
TP10 TP11
A
A
MONITOR Pins V1-V4 selector jumpers:
(ON PCB)
Jumpers LEFT = "Do Not Monitor"
Jumpers RIGHT = "Monitor"
* VERSION TABLE
ASSEMBLY TYPE
DC740A-A
DC740A-B
DC740A-C
U1
LTC2922IF
LTC2922IF-3.3
LTC2922IF-2.5
VCC
5V
3.3V
2.5V
RM1
221K
137K
95.3K
RL0
274
100
10
CUSTOMER NOTICE
CONTRACT NO.
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
CIRUIT 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
4
3
2
APPROVALS
DRAWN
June Wu
DATE
12/2/03
CHECKED
TECHNOLOGY
TITLE
LTC2922 Series, Tracker/Sequencer Demo Board
APPROVED
ENGINEER Tom DiGiacomo 12/2/03
DESIGNER
Friday, August 06, 2004
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SIZE
CAGE CODE
SCALE:
DWG NO
REV
A
DC740A
FILENAME:
SHEET
1
1
OF
1
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