Linear Technology LTC1624, Manual

Page: 25 / 28

25
LTC1624
TYPICAL APPLICATIO N S
U
Figure 20. 12V to 24V/5A Boost Converter
+
SENSE
–
I
TH
/RUN
V
FB
GND
V
IN
BOOST
TG
SW
LTC1624
C3
100pF C4
1500pF
C
IN
100
µ
F
16V
V
IN
9V TO
15V
V
OUT
24V
5A
D1*
C
B
0.1
µ
F
C5
0.1
µ
F
8
7
6
5
1
2
3
4
R2, 1M, 1%
R
SENSE
0.005
Ω
, 5%
R1
52.3k
R5
750
Ω
0.5W
R
C
27k
C
C
4700pF
M1*
C
OUT1
1000
µ
F
35V
+
C
OUT2
1000
µ
F
35V
Z1
IN755
7.5V
L1
10
µ
H
1624 F20
C
IN
= KEMET T495X107M016AS
C
OUT1
, C
OUT2
= SANYO 35MV 1000GX
D1 = MOTOROLA MBR2535CT
L1 = MAGNETICS CORE #55930AZ WINDING = 8T#14BIF
M1 = INTERNATIONAL RECTIFIER IRL 3803
R
SENSE
= IRC OAR-3, 0.005
Ω
, 5%
+
*BOTH D1 AND Q1 MOUNTED ON
THERMALLOY MODEL 6399 HEAT SINK
+
SENSE
–
I
TH
/RUN
V
FB
GND
V
IN
BOOST
TG
SW
LTC1624
C3
100pF
C
IN
22
µ
F
35V
V
IN
20V TO
32V
D1
C
B
0.1
µ
F
C5
0.1
µ
F
8
7
6
5
1
2
3
4
R2, 1M, 1%
R
SENSE
0.025
Ω
R1
13.3k
R
C
6.8k
C
C
820pF
M1
C
OUT
100
µ
F
100V
L1
47
µ
H
V
OUT
90V
0.5A
1624 F19
C
IN
= KEMET T495X226M035AS
C
OUT
= SANYO 100MV100GX
D1 = MOTOROLA MBRS1100
L1 = COILCRAFT D05022P-473
M1 = INTERNATIONAL RECTIFIER IRL 540NS
R
SENSE
= IRC LR2010-01-R025-F
+
Figure 19. 24V to 90V at 0.5A Boost Converter