Datasheet

ADP2325 Data Sheet
Rev. A | Page 28 of 32
TYPICAL APPLICATION CIRCUITS
Figure 54. Using an External MOSFET Application, V
IN1
= V
IN2
= 12 V, V
OUT1
= 1.2 V, I
OUT1
= 5 A, V
OUT2
= 3.3 V, I
OUT2
= 5 A, f
SW
= 500 kHz
Figure 55. Using an External Diode Application, V
IN1
= V
IN2
= 12 V, V
OUT1
= 5 V, I
OUT1
= 3 A, V
OUT2
= 3.3 V, I
OUT2
= 1.5 A, f
SW
= 600 kHz
BST1
PVIN1
SW1
DL1
PGND
SW2
DL2
EN1
PGOOD1
SS1
COMP1
FB1
BST2 PVIN2 EN2 SS2 COMP2 FB2
PGOOD2
GND
SYNC
SCFG
INTVCC
RT
VDRV
V
OUT2
3.3V
5A
V
OUT1
1.2V
5A
V
IN
12V
ADP2325
L1
1.5µH
L2
3.3µH
C
OUT1
100µF
C
OUT4
47µF
C
OUT2
100µF
C
OUT3
100µF
C
OUT5
47µF
C
IN1
10µF,
25V
M1
FDS8880
M2
FDS8880
R
OSC
120kΩ
C
BST1
0.1µF
C
SS2
22nF
C
C2
1500pF
R
C2
27kΩ
R
TOP1
10kΩ
R
BOT2
2.21kΩ
R
TOP2
10kΩ
C
INT
1µF
C
DRV
1µF
TRK1
TRK2
MODE
V
IN
12V
C
IN2
10µF,
25V
C
BST2
0.1µF
R
BOT1
10kΩ
R
C1
28kΩ
C
C1
1500pF
C
SS1
22nF
10036-050
BST1
PVIN1
SW1
DL1
PGND
SW2
DL2
EN1
PGOOD1
SS1
COMP1
FB1
BST2 PVIN2 EN2 SS2 COMP2 FB2
PGOOD2
GND
SYNC
SCFG
INTVCC
RT
VDRV
V
OUT2
3.3V
1.5A
V
OUT1
5V
3A
V
IN
12V
ADP2325
L1
4.7µH
L2
8.2µH
C
OUT1
22µF
C
OUT3
22µF
D2
B220A
D1
B320B
C
OUT2
22µF
C
OUT4
22µF
C
IN1
10µF,
25V
R
OSC
100kΩ
C
BST1
0.1µF
C
SS2
10nF
C
C2
4.7nF
R
C2
18kΩ
R
ILIM1
47kΩ
R
ILIM2
47kΩ
R
TOP1
22kΩ
R
BOT2
2.21kΩ
R
TOP2
10kΩ
C
INT
1µF
C
DRV
1µF
TRK1
TRK2
V
IN
12V
C
IN2
10µF,
25V
C
BST2
0.1µF
R
BOT1
3kΩ
R
C1
20kΩ
C
C1
2.2nF
MODE
C
SS1
10nF
10036-051