Linear Technology DC1721B-A, Демонстрационное руководство

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11
dc1721bf
DEMO MANUAL
DC1721B-A/DC1721B-B
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
<------ ------>
MODE
AND POWER MANAGER
CIRCUITRY ON THIS SIDE MUST CONNECT TO SIGNAL GND GROUNDPLANE
CIRCUITRY ON THIS SIDE MUST CONNECT TO POWER GND GROUNDPLANE
10V
(FZT603)
(10K)
(MM3Z10VT1)
PULSE SKIP
CCM
11A MAX
VOS+
VOS+
VOUT
INTVCC
INTVCC
INTVCC
VIN+
VOUT1
INTVCC
ITH
RUN
BIAS
VOUT
VIN
VOUT1
INTVCC
EXTVCC
EXTVCC
INTVCC
ITH
VIN
BG2
TG2 SW2 CS
TG1
SW1
BG1
SIZE DATE:
IC NO.
R
EV.
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
2
Wednesday, January 30, 2013
22
STEP UP/DOWN BATTERY CHARGER
LT
DAVID B.
N/A
LTC4000EGN /EGN-1, LTC3789EGN
DEMO CIRCUIT 1721B
SIZE DATE:
IC NO.
R
EV.
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
2
Wednesday, January 30, 2013
22
STEP UP/DOWN BATTERY CHARGER
LT
DAVID B.
N/A
LTC4000EGN /EGN-1, LTC3789EGN
DEMO CIRCUIT 1721B
SIZE DATE:
IC NO.
R
EV.
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
2
Wednesday, January 30, 2013
22
STEP UP/DOWN BATTERY CHARGER
LT
DAVID B.
N/A
LTC4000EGN /EGN-1, LTC3789EGN
DEMO CIRCUIT 1721B
J1
VIN 6V - 36V
J1
VIN 6V - 36V
R11 10 R11 10
E8
PLLIN
E8
PLLIN
C13
1.8nF 1206
C13
1.8nF 1206
C10 2.2uF C10 2.2uF
R21
121K
1%
R21
121K
1%
C27 OPT C27 OPT
E9
EXTVCC
E9
EXTVCC
+
CIN4 OPT
+
CIN4 OPT
R10
1.24K
R10
1.24K
Q5
SiR496DP
Q5
SiR496DP
4
5 1
2
3
6
7
8
U1
LTC3789EGN
U1
LTC3789EGN
VFB
1
SS
2 3
SENSE1-
4
ITH
5
SGND
6
MODE/PLLIN
7
FREQ
8
RUN
9
VINSNS
10
VOUTSNS
11
ILIM
12 13
IOSENSE-
14
NC
15
SW2
16
TG2
17
BOOST2
18
BG2
19
EXTVCC
20
INTVCC
21
VIN
22
PGND1
24
BOOST1
25
SW1
27
PGOOD
28
TG1
26
BG1
23
R4
100
R4
100
+
CIN2 56uF
50V
+
CIN2 56uF
50V
R18 0.008
2%
R18 0.008
2%
C2
25V
C2
25V
C7
OPT
C7
OPT
C25 50V C25 50V
R22 OPT R22 OPT
Q10 OPT Q10 OPT
C6
50V
C6
50V
C19
1000pF
C19
1000pF
E2
GND
E2
GND
D2
BAS16
D2
BAS16
3
1
+
CIN3 OPT
+
CIN3 OPT
E7
SS
E7
SS
R6
OPT
R6
OPT
C12 390pF
1206
C12 390pF
1206
+
COUT2 150uF
20V
+
COUT2 150uF
20V
C1
22uF
C1
22uF
Q2
SiR422DP
Q2
SiR422DP
4
5 1
2
3
6
7
8
CF OPT CF OPT
+
COUT1 150uF
20V
+
COUT1 150uF
20V
D10 BZT52C5V6 D10 BZT52C5V6
1
2
D11 OPT D11 OPT
1
2
R8 10 R8 10
R20
0.004
2%
R20
0.004
2%
C8
OPT
C8
OPT
C3C3
RFB2 8.06K RFB2 8.06K
R28 5.6 1206 R28 5.6 1206
C17
1210
C17
1210
C11 OPT C11 OPT
+
CIN1 56uF
50V
+
CIN1 56uF
50V
C15 1uF
50V
C15 1uF
50V
CF1 OPT CF1 OPT
E5
PGOOD
E5
PGOOD
R29 3.6
1206
R29 3.6
1206
CSS
0.022uF
CSS
0.022uF
R12
OPT
R12
OPT
E4
VLOGIC
E4
VLOGIC
R1
5.6
R1
5.6
R40 OPT R40 OPT
D7 DFLS160 D7 DFLS160
2 1
C4 0.22uF
16V
C4 0.22uF
16V
C22 0.22uF
16V
C22 0.22uF
16V
L1 4.7uH L1 4.7uH
C26 OPT C26 OPT
J2
GND
J2
GND
R13 100 R13 100
Q4
SiR422DP
Q4
SiR422DP
4
5 1
2
3
6
7
8
E6
SGND
E6
SGND
C23 OPT
16V 1210
C23 OPT
16V 1210
R41 OPT R41 OPT
E3
INTVCC
E3
INTVCC
RFB1 154K RFB1 154K
C34 0.01uF C34 0.01uF
R30 OPT R30 OPT
C9
3.3uF
50V 1210
C9
3.3uF
50V 1210
R7 100K R7 100K
R5 15
0805
R5 15
0805
D6
B240A
D6
B240A
D5
B240A
D5
B240A
2 1
E1
VIN+
E1
VIN+
R2
0.008
2%
R2
0.008
2%
R61 OPT R61 OPT
R14 100 R14 100
R60
10K
R60
10K
R27 OPT R27 OPT
C16C16
JP2JP2
1
2
3
Q3
SiR496DP
Q3
SiR496DP
4
5 1
2
3
6
7
8
C24
1uF
C24
1uF
R3
100
R3
100
R9
1.24K
R9
1.24K
C18 10uF
1206
C18 10uF
1206
R24 10K R24 10K
R25
0
R25
0
C5
3.3uF 1210
C5
3.3uF 1210
D4 DFLS160 D4 DFLS160
2 1
C14 0.1uF C14 0.1uF
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