LTC3786 LINER [Linear Technology], LTC3786 Datasheet - Page 40

• Manufacturer Part Number: LTC3786
• Description: Multi-Phase Current Mode Step-Up DC/DC Controller
• Manufacturer: LINER [Linear Technology]

LTC3862-2
Typical applicaTions
40
50V/DIV
5V/DIV
2A/DIV
2A/DIV
V
RUN
OUT
I
I
L1
L2
2200pF
L1, L2: CHAMPS TECHNOLOGIES HRPQA2050-57
PULSE ENGINEERING PA2050-583
V
V
I
LOAD
IN
OUT
= 24V
68.1k
43.5k
47pF
= 107V
= 400mA
V
OUT
0.1µF
6.65k
576k
Start-Up
2ms/DIV
A 24V Input, 107V/1.5A Output 2-Phase Boost Converter Application Circuit
D
SLOPE
BLANK
PHASEMODE
FREQ
SS
ITH
FB
SGND
CLKOUT
SYNC
PLLFLTR
MAX
LTC3862-2
SENSE1
SENSE1
SENSE2
SENSE2
INTV
100
GATE1
GATE2
PGND
96
92
88
84
80
76
RUN
38622 TA05b
100
3V8
V
CC
IN
V
V
+
–
–
+
IN
OUT
= 24V
EFFICIENCY
= 107V
24.9k
4.7µF
1nF
10nF
1µF
10nF
LOAD CURRENT (mA)
Efficiency
150k
1000
8.5V TO 36V
POWER LOSS
V
IN
AC-COUPLED
22µF 25V
2A/DIV
2A/DIV
2A/DIV
1V/DIV
10
V
I
38622 TA05d
OUT
OUT
I
I
10
L1
L2
58µH
58µH
10000
22µF 25V
22µF 25V
V
V
I
L2
L1
LOAD
IN
OUT
100000
10000
1000
= 24V
= 107V
= 500mA TO 1.5A
0.010
1W
Q1
Si7430DP
0.010
1W
Q2
Si743ODP
PDS4150
D2
PDS4150
Load Step
500µs/DIV
100µF
150V
D1
+
8× 1µF 250V
38622 TA05a
38622 TA05c
V
107V
1.5A (MAX)
OUT
38622f