Datasheet

LTC3787
32
3787fc
Figure 15. 4-Phase Single Output Boost Converter
TYPICAL APPLICATIONS
MBOT2
MTOP2
SENSE2
+
SENSE2
–
SENSE1
–
SENSE1
+
VFB
ITH
SGND
EXTV
CC
INTV
CC
RUN
FREQ
SS
PLLIN/MODE
PGOOD
TG1
SW1
BOOST1
BG1
VBIAS
INTV
CC
PGND
BG2
TG2
BOOST2
SW2
C
B1
, 0.1µF
C
OUTA1
22µF
s 4
C
B2
, 0.1µF
C
INT1
4.7µF
R
B
232k
LTC3787
L2
3.3µH
L1
3.3µH
MTOP1
MBOT1
100k
INTV
CC
R
SENSE1
4m
C
SS
, 0.1µF
R
A
, 12.1k
C
ITHA
, 220pF
R
ITH
, 8.66k
C
ITH
, 15nF
R
SENSE2
4m
D1
D2
ILIM
PHASMD
CLKOUT
+
C
OUTB1
220µF
V
OUT
24V, 20A*
V
IN
5V to 24V
C
OUTA2
22µF
s 4
+
C
OUTB2
220µF
C
INA
22µF
s 4
+
C
INB
220µF
MBOT4
MTOP4
SENSE2
+
SENSE2
–
SENSE1
–
SENSE1
+
VFB
ITH
SGND
EXTV
CC
RUN
FREQ
SS
PLLIN/MODE
PGOOD
TG1
SW1
BOOST1
BG1
VBIAS
INTV
CC
PGND
BG2
TG2
BOOST2
SW2
C
B3
, 0.1µF
C
OUTA3
22µF
s 4
C
B4
, 0.1µF
C
INT2
4.7µF
LTC3787
L4
3.3µH
L3
3.3µH
MTOP3
MBOT3
100k
INTV
CC
R
SENSE3
4m
R
SENSE4
4m
D3
D4
ILIM
PHASMD
CLKOUT
+
C
OUTB3
220µF
C
OUTA4
22µF
s 4
+
C
OUTB4
220µF
3787 F15
C
INA
, C
OUTA1
, C
OUTA2
, C
OUTA3
, C
OUTA4
: TDK C4532X5R1E226M
C
INB
, C
OUTB1
, C
OUTB2
, C
OUTB3
, C
OUTB4
: SANYO, 50CE220LX
L1, L2, L3, L4: PULSE PA1494.362NL
MBOT1, MBOT2, MBOT3, MBOT4, MTOP1, MTOP2, MTOP3, MTOP4: RENESAS HAT2169H
D1, D2, D3, D4: BAS140W
*WHEN V
IN
< 8V, MAXIMUM LOAD CURRENT AVAILABLE IS REDUCED.