Datasheet

LTC3788-1
27
37881fc
APPLICATIONS INFORMATION
SENSE1
–
SENSE1
+
SENSE2
+
SENSE2
–
VFB1
ITH1
SGND
EXTV
CC
RUN1
RUN2
FREQ
SS2
VFB2
SS1
PLLIN/MODE
PGOOD1
TG1
SW1
BOOST1
BG1
VBIAS
INTV
CC
PGND
BG2
TG2
BOOST2
SW2
R
S2
26.1k, 1%
C
OUTA2
: C4532x7R1H685K
C
OUTB2
: SANYO 63CE220KX
C
INA
, C
OUTA1
: TDK C4532X5R1E226M
C
INB
, C
OUTB1
: SANYO 50CE220AX
L1: PULSE PA2050.103NL
L2: PULSE PA2050.163NL
MBOT1, MTOP1: RENESAS RJK0305
MBOT2A, MBOT2B, MTOP2: RENESAS RJK0652
D3: DIODES INC B340B
D4: DIODES INC B360A
R
B1
232k
1%
C
ITH1
, 220pF
C
SS1
, 0.01µF
C
SS2
, 0.01µF
C
ITH1
, 15nF
C
INT
4.7µF
C
B1
, 0.1µF
C
B1
, 0.1µF
D1
V
IN
5V TO 24V
D2
LTC3788-1
L2
16µH
L1
10.2µH
MTOP1
MBOT2A
MBOT2B
MBOT1
MTOP2
37881 F10
100k
INTV
CC
D4
D3
C
INA
22µF
× 4
C
INB
220µF
V
OUT1
24V, 4A
C
OUTA1
6.8µF
× 4
C
OUTB1
220µF
V
OUT2
48V, 2A
C
OUTA2
22µF
× 4
C
OUTB2
220µF
R
S4
30.1k, 1%
R
A1
12.1k, 1%
R
A2
12.1k, 1%
R
FREQ
41.2k
R
ITH1
8.87k, 1%
ITH2
C
ITH2
, 4.7nF
C
ITH2A
, 220pF
R
ITH2
23.7k, 1%
C3
0.1µF
R
B2
475k
1%
R
S1
, 53.6k, 1%
R
S3
42.2k, 1%
C1
0.1µF
C2
0.1µF
C4
0.1µF
INTV
CC
+
+
+
Figure 10. High Efficiency Dual 24V/48V Boost Converter with Inductor DCR Current Sensing