24
LTC3736
3736fa
R
L1
L1
MP1
V
OUT1
C
OUT1
MN1
MN2
+
V
IN
C
IN
R
IN
+
R
L2
BOLD LINES INDICATE
HIGH, SWITCHING
CURRENT LINES.
KEEP LINES TO A
MINIMUM LENGTH
L2
MP2
3736 F14
V
OUT2
C
OUT2
+
APPLICATIO S I FOR ATIO
W
U
U
U
Figure 14. Branch Current Waveforms
Figure 15. 2-Phase, 550kHz, Dual Output Synchronous DC/DC Converter
SGND
PLLLPF
IPRG2
IPRG1
V
FB1
I
TH1
SW1
R
VIN
10
Ω
R
ITH2
15k
C
ITH2
220pF
C
SS
10nF
C
IN
10
µ
F
×
2
C
VIN
1
µ
F
V
IN
5V
V
IN
C
ITH2B
100pF
R
ITH1
15k
C
ITH1
220pF
C
ITH1A
100pF
R
FB1B
187k
R
FB1A
59k
PGOOD
V
FB2
TRACK
25
I
TH2
TG2
LTC3736EUF
PGND
TG1
SYNC/FCB
BG1
PGND
22
21
20
19
18
17
16
15
14
13
12
11
10
23
24
1
2
3
4
5
9
8
7
6
SENSE1
+
MP1
MP2
L1
1.5
µ
H
L2
1.5
µ
H
MN1
Si7540DP
MN2
Si7540DP
RUN/SS
BG2
PGND
PGND
SW2
SENSE2
+
R
TRACKB
118k
R
TRACKA
59k
R
FB2A
59k
R
FB2B
118k
C
OUT2
150
µ
F
C
OUT1
150
µ
F
V
OUT1
2.5V
5A
V
OUT2
1.8V
5A
3736 F15
+
+
TYPICAL APPLICATIO S
U
