LTC3882-1
104
Rev A
For more information
TYPICAL APPLICATIONS
Figure 54. 36V Input 3.3V/40A 1.0MHz Converter with Discrete Gate Drivers
V
IN
LTC3882-1
SCL
RUN1
RUN0
I
SENSE0
+
I
SENSE0
–
V
SENSE0
+
V
SENSE0
–
V
SENSE1
–
R20 4.99k
FAUL
T0
FAUL
T1
SHARE_CLK
SYNC
FB0
COMP0
TSNS0
R30 100k
R21 100k
C26 270pF
TSNS1
GND
38821 F54
I
AVG_GND
PWM0
PGOOD0
V
SENSE1
+
I
SENSE1
–
I
SENSE1
+
PWM1
PGOOD1
41
5
27
26
31
32
33
29
28
3
2
1
40
35
34
36
37
38
6
7
30
39
21
20
19
18
17
16
23
8
15
14
13
12
11
10
9
FB1
V
DD33
R19 4.99k
R18 10k
R17 10k
R15 10k
RUN
SDA
ALER
T
C27 11pF
R29 1.07k
C25 200pF
COMP1
C18 4.7µF
V
CC
25
C17 1µ
F
V
DD25
V
DD25
22
C16
2.2µF
V
DD33
V
CC
V
DD25
V
DD33
24
C8 100nF
C4
47µF
VINSNS
4
R5 1Ω
V
OUT0_CFG
ASEL1
ASEL0
V
OUT1_CFG
FREQ_CFG
PHAS_CFG
I
AVG1
I
AVG0
R14 1.37k
R35 5.76k
R34 24.9k
R31 17.4k
R32 16.2k
C35 100pF
LTC4449
C57 2.2µF
C56 0.22µF
D1
C
IN3
22µF
×
2
V
CC
V
CC
+5V INPUT SUPPL
Y
7
BOOST
8
IN
5
V
LOGIC
V
DD33
V
DD33
6
TG
1
TS
2
BG
3
GND
4
GND
9
V
IN
24V TO 36V
+
R85
2.21Ω
Q5
Q6
C28 10nF
PLACE Q1,Q2 NEAR L1, L2 RESPECTIVEL
Y
Q1
C29 10nF
Q2
R8 3.09k
C24 0.22µF
L1
0.2µH PULSE
LTC4449
C58
2.2µF
C55 0.22µF
C
IN1
22µF
×
2
V
CC
V
CC
7
BOOST
8
IN
5
V
LOGIC
V
DD33
6
TG
1
TS
2
BG
3
GND
4
GND
9
R84
2.21Ω
Q3
Q4
R55 3.09k
C66 0.22µF
L2
0.2µH PULSE
C12 100µF
×
2
C14 470µF
×
4
V
OUT
3.3V 40A
V
IN
GND
+
D2
Q1, Q2: MMBT3906 Q3, Q5: BSC050N04LSG Q4, Q6: BSC010N04LS L1, L2: PULSE P
A0513.221NL
T
