DC1029B - Schematic

5
4
3
2
ECO REV
-
1
REVISION HISTORY
DESCRIPTION
APPROVED
Replaced obsolete LED's
B
EN2
D
CMP2
CMP1
CMP4
CMP3
SQT1
SQT2
8
RT4
9
SQT1
10
SQT2
11
MS1
12
RDIS
ON
B
CMP1
CMP4
CMP3
V3
32
33
CMP3
34
CMP4
36
35
CMP1
CMP2
PTMR
RT1
STMR
RT2
VSEL
RT3
GND
RT4
HVCC
SQT1
VCC
SQT2
RST#
MS1
OV#
13
MS2
37
REF
MS2
MS1
CMP2
V3
31
EN3
30
V4
29
EN4
28
RTMR
27
PTMR
26
STMR
EN3
V4
EN4
C
25
VSEL
24
HVCC
23
22
21
20
C1
C2 2.2uF
C3
1uF
25V
C4
1uF
25V
C5
0.047uF
RST#
MS2
RDIS
OV#
ON
FLT#
CAS
E1
CAS
VSEL
0.022uF
VCC
FLT#
RT4
7
RT3
RTMR
DONE#
RT3
RT2
D
19
RT2
6
NC
NC
RT1
RT1
EN4
18
REF
C
5
V4
V1
17
4
REF
EN1
ON
3
EN3
U1
LTC2928CUHF
CAS
V1
OVA
16
2
RDIS
V1
1
EN1
15
EN1
OVA
EN2
V2
OVA
Oct 20, 2015
EN2
V3
38
V2
14
V2
DATE
Vlad Ostrerov
RST#
OV#
B
FLT#
E2
DONE#
R1
3.3K
JP1
VCC
OPERATION
1
LAST
2
NOT LAST
3
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
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
RB
Vlad Ostrerov TITLE: SCHEMATIC
5
4
3
N/A
SCALE = NONE
2
A
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
IC NO.
Multichannel Power Supply
Sequencer and Supervisor
LTC2928CUHF
Demo Circuit 1029B
MODIFY DATE: Oct 20, 2015
SHEET
1
REV.
1
1
OF
5
5
4
3
2
1
5V_AUX
5V_AUX
EN1
EN1
EN2
D
R2
300
R3
300
R4
300
R5
300
R6
300
R7
300
R8
300
D
EN2
EN3
R9
300
EN3
EN4
EN4
CMP1
D1
EN1
YEL
D2
EN2
YEL
D3
EN3
YEL
CMP1
CMP2
D4
EN4
YEL
D5
CMP1
ORN
D6
CMP2
ORN
D7
CMP3
ORN
D8
CMP4
ORN
CMP2
CMP3
CMP3
CMP4
CMP4
ON
EN1
Q1
2N7002
EN2
Q2
2N7002
Q3
2N7002
EN3
Q4
2N7002
EN4
CMP1
Q5
2N7002
Q6
2N7002
CMP2
Q7
2N7002
CMP3
ON
RST#
Q8
2N7002
CMP4
RST#
OV#
OV#
FLT#
FLT#
C
C
VCC
U2
LTC2950CTS8-1
5V_AUX
R39
10K
VCC
INT
C6
S1
B
E4
ON
Q9
2N7002
ON
D10
RESET
RED
D11
OVERVOLTAGE
RED
E5
E6
RESET
OV#
D12
FAULT
RED
OVERVOLTAGE
E7
1
ON
KILL
8
JP2
ON
INT_ON
2
3
EXT_ON
E3
ON
C7
4700pF
RST#
6
PB
OFFT
2
PB
D9
ON
GRN
EN/EN
ONT
0.1uF
R10
10K
7
R14
1.5K
GND
R13
1.5K
3
R12
1.5K
5
VIN
4
R11
300
1
C8
4700pF
B
FLT#
FAULT
LED Display
APPROVALS
A
PCB DES.
TECHNOLOGY
RB
APP ENG. Vlad Ostrerov
TITLE: SCHEMATIC
N/A
5
4
3
2
A
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
SIZE
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
Multichannel Power Supply
Sequencer and Supervisor
IC NO.
LTC2928CUHF
Demo Circuit 1029B
MODIFY DATE: Oct 20, 2015
REV.
1
SHEET
1
2
OF
5
5
4
D
3
V1_INT
JP3
V1
1
INT
2
E8
V1_FET
V1_FET
E10
EN1
EN1
3
100
E11
EN3
R17
V1_MON
V1
100
V1_POL
V3_MON
C10
TBD
V1
3
D
EXT
Q11
IRL3704ZSPBF
R16
EN3
182K
1%
E12
V1_MON
V3_INT
JP4
V3
1
INT
2
V3_FET
EXT
EN3
C9
TBD
1
E9
V3_FET
Q10
IRL3704ZSPBF
R15
EN1
2
R18
118K
1%
E13
V3_MON
V1_POL
V3
V3
R19
49.9K
1%
R20
49.9K
1%
C
C
V2_INT
1
E14
V2_FET
E16
EN2
EN2
3
V4_FET
EXT
E17
EN4
EN4
100
V2_MON
C11
TBD
R23
88.7K
1%
E18
V2_MON
B
E15
V4_FET
Q12
IRL3704ZSPBF
R21
EN2
INT
2
V2_FET
V2
V4_INT
JP6
V4
1
INT
2
JP5
V2
100
V4_MON
C12
TBD
V2
R24
261K
1%
E19
V4_MON
R25
49.9K
1%
EXT
Q13
IRL3704ZSPBF
R22
EN4
3
V4
V4
B
R26
49.9K
1%
MOSFETS for Sequencing On Board Regulators or
External Supplies
APPROVALS
A
PCB DES.
TECHNOLOGY
RB
APP ENG. Vlad Ostrerov
TITLE: SCHEMATIC
N/A
5
4
3
2
A
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
SIZE
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
Multichannel Power Supply
Sequencer and Supervisor
IC NO.
LTC2928CUHF
Demo Circuit 1029B
MODIFY DATE: Oct 20, 2015
REV.
1
SHEET
1
3
OF
5
5
4
3
2
1
Performance Adjustment
VCC JP8
VSEL
1
RT1
CONTROL
RT1
RT1
3
4
TIME POSITION
ALL POSITIVE
V1
V1
R28
REF
REF
3
VCC
R30
24.3K
1%
RT2
CONTROL
RT2
RT2
VCC
SQT2
4
OVA
4
VCC
1
FORCE OFF
1
2 >32%
3
4
RT3
RT3
4
B
R34
3.40K
1%
RT4
RT4
5
6
32%
<32%
MS1
MASTER SLAVE
CONFIGURATION
VCC
R31
1
(Opt)
2
MS2
GND
JP15
MS2
VCC
OPEN
3
GND
R33
5.1K
FORCE OFF
B
HVCC
VIN
JP17
VCC Select
1
VCC
HVCC(8V to 16.5V)
1
2
VCC
LOW VCC 3
RESET
DISABLE
LOW VCC(2.9V to 6V)
JP18
RDIS
VCC
2
RDIS
RDIS
3
4
JP19
RT4 CONTROL
1
FORCE ON
2
TIME POSITION
3
OPEN
GND
FORCE OFF
APPROVALS
A
PCB DES.
TECHNOLOGY
RB
APP ENG. Vlad Ostrerov
4
3
2
A
TITLE: SCHEMATIC
N/A
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
SIZE
5
OPEN
3
HVCC
E20
VCC IN
LOW Vcc:2.9V-6V
HVcc:8V-16.5V
4
GND
VCC
4
VCC
RT4
CONTROL
OPEN
JP12
MS1
4
MS2
RT3
CONTROL
VCC
C
MS1
VCC
JP16
RT3 CONTROL
1
FORCE ON
2
TIME POSITION
3
D
2
JP14
OVA CONFIG ABOVE UV
R_VCC
JP10
SQT2
1
3
(Opt)
R_GND
R32
9.53K
1%
SQT2
VCC
OVA
GND
2
R29
JP13
RT2 CONTROL
1
FORCE ON
2
TIME POSITION
3
OPEN
3
V1_NEG
TBD
C
SQT1
SEQUENCING
THRESHOLD
SELECTION
JP11
V1_POLARITY
1
V1_POS
2
V1_POL
V1_POL
FORCE OFF
SQT1
V1_NEG
JP9
RT1 CONTROL
1
FORCE ON
2
R27
95.3K
1%
VCC
4
3
VCC
JP7
SQT1
1
2
2
VSEL
VSEL
D
VCC
Multichannel Power Supply
Sequencer and Supervisor
IC NO.
LTC2928CUHF
Demo Circuit 1029B
MODIFY DATE: Oct 20, 2015
REV.
1
SHEET
1
4
OF
5
5
4
3
2
1
On Board LT1761ES Regulators
D
D
5V_AUX
E21
5V_AUX
IN
5
V1_INT
C14
0.01uF
SHDN
BYP
4
1
V1_INT
C15
10uF
6.3V
C19
10uF
6.3V
2
3
E24
C
OUT
R35
10K
U5
LT1761ES5-1.8
IN
OUT
C20
0.01uF
3
SHDN
E28
SHDN2.5
V3_INT
5
R37
10K
GND
1
C13
10uF
6.3V
GND
3
EXTERNAL
E23
V3_INT
E22
V1_INT
U3
LT1761ES5-2.5
BYP
4
V3_INT
C21
10uF
6.3V
2
JP20
SUPPLIES SELECTION
1
LOCAL ON BOARD
2
SHDN1.8
C
E26
V2_INT
E27
V4_INT
U4
LT1761ES5-1.5
B
5
C17
0.01uF
3
SHDN
GND
R36
10K
V2_INT
BYP
4
E25
SHDN1.5
1
V2_INT
C18
10uF
6.3V
C22
10uF
6.3V
IN
OUT
V4_INT
5
R38
10K
C23
0.01uF
3
GND
OUT
SHDN
E29
2
C16
10uF
6.3V
IN
BYP
4
V4_INT
C24
10uF
6.3V
2
1
U6
LT1761ES5-3.3
SHDN3.3
E30
GND
E31
GND
E32
GND
E33
GND
B
E34
GND
APPROVALS
A
PCB DES.
TECHNOLOGY
RB
APP ENG. Vlad Ostrerov
TITLE: SCHEMATIC
N/A
5
4
3
2
A
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
SIZE
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
Multichannel Power Supply
Sequencer and Supervisor
IC NO.
LTC2928CUHF
Demo Circuit 1029B
MODIFY DATE: Oct 20, 2015
REV.
1
SHEET
1
5
OF
5
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