LTC3862 LINER [Linear Technology], LTC3862 Datasheet - Page 37

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

TYPICAL APPLICATIONS
I
I
L1
L2
I
I
L1
L2
MASTER
MASTER
10V/DIV
5V/DIV
5A/DIV
5A/DIV
5A/DIV
5A/DIV
SLAVE
SLAVE
V
OUT
V
IN
V
V
R
IN
OUT
LOAD
= 5V
= 12V
= 10Ω
V
OUT
Start-Up
1ms/DIV
10nF
10nF
A 4.5V to 5.5V Input, 12V/15A Output 4-Phase Boost Converter Application Circuit
330pF
330pF
45.3k
3.83k
45.3k
10nF
10k
18.7k
165k
3862 TA03b
D
SLOPE
BLANK
PHASEMODE
FREQ
SS
ITH
FB
SGND
CLKOUT
SYNC
PLLFLTR
D
SLOPE
BLANK
PHASEMODE
FREQ
SS
ITH
FB
SGND
CLKOUT
SYNC
PLLFLTR
MAX
MAX
LTC3862
LTC3862
I
I
L1
L2
200mV/DIV
I
I
L1
L2
MASTER
MASTER
2.5A-5A
SENSE1
SENSE1
SENSE2
SENSE2
SENSE1
SENSE1
SENSE2
SENSE2
5A DIV
5A/DIV
5A/DIV
5A/DIV
5A/DIV
SLAVE
SLAVE
INTV
INTV
I
GATE1
GATE2
GATE1
GATE2
V
PGND
PGND
LOAD
OUT
RUN
RUN
3V8
3V8
V
V
CC
CC
IN
IN
+
–
–
+
+
–
–
+
V
V
IN
OUT
= 5V
= 12V
4.7μF
4.7μF
1nF
1nF
1μF
1μF
10nF
10nF
10nF
10nF
CONTROL
ON/OFF
Load Step
250μs/DIV
4.5V TO 5.5V
V
IN
33μF 10V
33μF 10V
10Ω
10Ω
CDEP145-2R7
CDEP145-2R7
CDEP145-2R7
CDEP145-2R7
10Ω
10Ω
2.7μH
2.7μH
2.7μH
2.7μH
33μF 10V
33μF 10V
33μF 10V
33μF 10V
L1
L2
L1
L2
3862 TA03c
MBRB2515LT41
MBRB2515LT41
Q1
HAT2165H
0.005Ω
1W
0.005Ω
1W
Q3
HAT2165H
MBRB2515LT41
Q1
HAT2165H
0.005Ω
1W
0.005Ω
1W
Q3
HAT2165H
MBRB2515LT41
D1
D1
D2
D2
220μF
220μF
220μF
220μF
16V
16V
16V
16V
100
95
90
85
80
75
70
65
60
+
+
+
+
100
15μF 25V
15μF 25V
15μF 25V
15μF 25V
15μF 25V
15μF 25V
15μF 25V
15μF 25V
V
V
IN
OUT
= 5V
= 12V
3862 TA03a
EFFICIENCY
LOAD CURRENT (mA)
1000
Effi ciency
V
12V
15A
OUT
LTC3862
POWER LOSS
10000
3862 TA03d
100000
37
100000
10000
1000
100
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