ltc3787gn Linear Technology Corporation, ltc3787gn Datasheet - Page 29

• Manufacturer Part Number: ltc3787gn
• Description: Ltc3787 - Polyphase Synchronous Boost Controller
• Manufacturer: Linear Technology Corporation

Typical applicaTions
C
C
L1, L2: PULSE PA1494.362NL
MBOT1, MBOT2, MTOP1, MTOP2: RENESAS HAT2169H
D1, D2: BAS140W
*WHEN V
C
C
L1, L2: PULSE PA1494.362NL
MBOT1, MBOT2, MTOP1, MTOP2: RENESAS HAT2169H
D1, D2: BAS140W
IN
OUTB1
IN
OUTB1
C
C
, C
R
R
ITH
ITH
, C
A
A
OUTA1
, 12.1k
, 12.1k
OUTA1
, 15nF
, 15nF
, C
, C
C
C
IN
OUTB2
C
OUTB2
ITHA
C
ITHA
, C
SS
SS
< 8V, MAXIMUM LOAD CURRENT AVAILABLE IS REDUCED.
, C
R
R
, 0.1µF
OUTA2
, 0.1µF
ITH
, 220pF
ITH
, 220pF
OUTA2
R
232k
: SANYO, 50CE220LX
R
271k
: SANYO, 50CE220LX
B
B
, 8.66k
, 8.66k
: TDK C4532X5R1E226M
: TDK C4532X7RIH685K
SS
SS
ILIM
PHASMD
PLLIN/MODE
EXTV
ITH
ILIM
SENSE1
SENSE1
CLKOUT
SGND
RUN
FREQ
SENSE2
SENSE2
SENSE1
SENSE1
PHASMD
CLKOUT
PLLIN/MODE
SGND
EXTV
RUN
FREQ
ITH
SENSE2
SENSE2
VFB
VFB
CC
CC
–
+
+
–
Figure 10. High Efficiency 2-Phase 24V Boost Converter
–
+
+
–
Figure 11. High Efficiency 2-Phase 28V Boost Converter
LTC3787
LTC3787
BOOST2
BOOST2
BOOST1
BOOST1
PGOOD
INTV
PGOOD
INTV
VBIAS
VBIAS
PGND
PGND
SW2
SW2
SW1
SW1
BG2
TG2
BG2
TG2
BG1
BG1
TG1
TG1
CC
CC
100k
100k
C
C
B1
D2
B1
D2
D1
D1
C
C
, 0.1µF
, 0.1µF
B2
B2
, 0.1µF
, 0.1µF
INTV
INTV
C
4.7µF
C
4.7µF
CC
CC
INT
INT
3787 F10
3787 F11
MTOP1
MBOT1
MBOT2
MTOP2
MTOP1
MBOT1
MBOT2
MTOP2
3.3µH
3.3µH
3.3µH
3.3µH
L1
L1
L2
L2
R
R
R
R
SENSE1
SENSE1
4m
SENSE2
4m
SENSE2
4m
4m
C
22µF
× 4
C
22µF
× 2
C
22µF
× 4
C
6.8µF
× 4
C
6.8µF
× 4
C
6.8µF
× 4
OUTA1
IN
OUTA2
OUTA1
IN
OUTA2
V
5V TO 24V
V
5V TO 28V
IN
IN
+
+
+
+
C
220µF
C
220µF
C
220µF
C
220µF
OUTB1
OUTB2
OUTB1
OUTB2
LTC3787
V
24V, 10A*
V
28V, 8A
OUT
OUT
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