Datasheet

LTC3862-1
37
38621f
TYPICAL APPLICATION
A 24V Input, 107V/1.5A Output 2-Phase Boost Converter Application Circuit
Start-Up Load Step
Effi ciency
SENSE1
+
3V8
SLOPE
BLANK
CLKOUT
SYNC
PLLFLTR
PHASEMODE
D
MAX
10nF
SENSE1
–
SENSE2
–
SENSE2
+
RUN
FREQ
SS
V
IN
68.1k 24.9k
150k
10
V
IN
8.5V TO 36V
D1
PDS4150
D2
PDS4150
10
L2
58µH
ITH
SGND
V
OUT
6.65k
FB
43.5k
576k
0.1µF
1µF
1nF
22µF 25V
0.010
1W
Q1
Si7430DP
Q2
Si743ODP
0.010
1W
V
OUT
107V
1.5A (MAX)
3862 TA03a
100µF
150V
22µF 25V
22µF 25V
8× 1µF 250V
LTC3862-1
44pF
2200pF
INTV
CC
GATE1
GATE2
PGND
4.7µF
10nF
L1
58µH
+
L1, L2: CHAMPS TECHNOLOGIES HRPQA2050-57
PULSE ENGINEERING PA2050-583
RUN
5V/DIV
V
IN
= 24V
V
OUT
= 107V
I
LOAD
= 400mA
V
OUT
50V/DIV
I
L1
2A/DIV
I
L2
2A/DIV
2ms/DIV
38621 TA03b
I
OUT
2A/DIV
V
IN
= 24V
V
OUT
= 107V
I
LOAD
= 500mA TO 1.5A
V
OUT
1V/DIV
AC COUPLED
I
L1
2A/DIV
I
L2
2A/DIV
500µs/DIV
38621 TA03c
LOAD CURRENT (mA)
EFFICIENCY (%)
POWER LOSS (mW)
100
96
92
38621 TA03d
76
84
80
100000
1000
1000088
10000
100 1000
V
IN
= 24V
V
OUT
= 107V
EFFICIENCY
POWER LOSS