LTC3862 LINER [Linear Technology], LTC3862 Datasheet - Page 36

• Manufacturer Part Number: LTC3862
• Description: Multi-Phase Current Mode Step-Up DC/DC Controller
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIONS
LTC3862
36
20V/DIV
5V/DIV
5A/DIV
5A/DIV
V
RUN
OUT
I
I
L1
L2
1nF
V
V
I
LOAD
IN
OUT
100pF
45.3k
26.7k
10nF
= 12V
V
= 24V
= 5A
OUT
6.98k
130k
Start-Up
1ms/DIV
A 12V Input, 24V/5A Output 2-Phase Boost Converter Application Circuit
D
SLOPE
BLANK
PHASEMODE
FREQ
SS
ITH
FB
SGND
CLKOUT
SYNC
PLLFLTR
MAX
LTC3862
SENSE1
SENSE1
SENSE2
SENSE2
INTV
GATE1
GATE2
PGND
RUN
100
3V8
V
95
90
85
80
75
3862 TA02b
CC
IN
+
–
–
+
100
V
V
IN
OUT
= 12V
= 24V
4.7μF
1nF
15k
1μF
10nF
10nF
EFFICIENCY
LOAD CURRENT (mA)
100k
Effi ciency
5V TO 24V
1000
V
POWER LOSS
IN
22μF 25V
500mV/DIV
10Ω
CDEP145-4R2
CDEP145-4R2
5A/DIV
5A/DIV
5A/DIV
I
10Ω
V
LOAD
OUT
4.2μH
4.2μH
3862 TA02d
I
I
L1
L2
22μF 25V
22μF 25V
L1
L2
10000
V
V
I
LOAD
IN
OUT
10000
1000
100
= 12V
= 24V
= 2A TO 5A
Q1
Si7386DP
0.007Ω
1W
0.007Ω
1W
Q2
Si7386DP
MBRD835L
MBRD835L
D1
D2
Load Step
100μF
100μF
500μs/DIV
35V
35V
+
+
10μF 50V
10μF 50V
10μF 50V
10μF 50V
3862 TA02a
3862 TA02c
V
24V
5A (MAX)
OUT
3862fb