LTC3787
TYPICAL APPLICATIONS
–
SENSE1
100k
+
+
C
SENSE1
PGOOD
TG1
INTV
CC
OUTA1
C
OUTB1
220ꢀF
L1
10.2ꢀH
6.8ꢀF
R
MTOP1
MBOT1
SENSE1
5mΩ
ILIM
× 4
PHASMD
CLKOUT
SW1
C
, 0.1ꢀF
B1
PLLIN/MODE BOOST1
SGND
EXTV
RUN
BG1
CC
LTC3787
D1
VBIAS
INTV
CC
FREQ
V
V
IN
OUT
C
SS
, 0.1ꢀF
C
INT
4.7ꢀF
5V TO 36V
36V, 6A
C
IN
SS
6.8ꢀF
PGND
BG2
C
ITH
, 15nF
× 4
D2
C
R
, 3.57k
ITH
ITH
MBOT2
MTOP2
, 0.1ꢀF
B2
C
, 220pF
ITHA
L2
10.2ꢀH
R
SENSE2
5mΩ
BOOST2
SW2
R , 12.1k
A
TG2
VFB
SENSE2
SENSE2
+
–
R
B
348k
+
C
6.8ꢀF
× 4
OUTA2
C
OUTB2
220ꢀF
3787 F12
C
, C : TDK C4532X7RIH685K
, C
OUTB1 OUTB2
IN OUTA1 OUTA2
C
, C : SANYO, 50CE220LX
L1, L2: PULSE PA2050.103NL
MBOT1, MBOT2, MTOP1, MTOP2: RENESAS RJICO652DPB
D1, D2: BAS170W
Figure ±2. High Efficiency 2-Phase 36V Boost Converter
–
SENSE1
100k
+
+
C
SENSE1
PGOOD
TG1
INTV
CC
OUTA1
C
OUTB1
220ꢀF
L1
16ꢀH
6.8ꢀF
R
MTOP1
MBOT1
SENSE1
8mΩ
ILIM
× 4
PHASMD
CLKOUT
SW1
C
, 0.1ꢀF
B1
PLLIN/MODE
BOOST1
SGND
EXTV
RUN
BG1
CC
LTC3787
D1
VBIAS
INTV
CC
FREQ
V
V
IN
OUT
C , 0.1ꢀF
SS
C
INT
4.7ꢀF
5V TO 38V
48V, 4A
C
IN
SS
6.8ꢀF
PGND
BG2
C , 10nF
ITH
× 4
D2
C
R
, 23.7k
ITH
ITH
MBOT2
MTOP2
, 0.1ꢀF
B2
C
, 220pF
ITHA
L2
16ꢀH
R
SENSE2
8mΩ
BOOST2
SW2
R , 12.1k
A
TG2
VFB
SENSE2
SENSE2
+
–
R
B
475k
+
C
6.8ꢀF
× 4
OUTA2
C
OUTB2
220ꢀF
3787 F13
C
, C : TDK C4532X7RIH685K
, C
OUTB1 OUTB2
IN OUTA1 OUTA2
C
, C : SANYO, 63CE220K
L1, L2: PULSE PA2050.163NL
MBOT1, MBOT2, MTOP1, MTOP2: RENESAS RJK0652DPB
D1, D2: BAS170W
Figure ±3. High Efficiency 2-Phase 48V Boost Converter
3787fc
30
Linear Systems [ Linear Systems ]
