ISL8225M
Typical Application Circuits(Continued)
2.5V
4.5V TO 20V
14
8
23
22
21
25
26
1
VDDQ
VIN
VIN1
VOUT1
VSEN1+
VSEN1-
VOUT2
+
R1
CIN2
4x22µF
CIN1
330µF
VIN2
1kΩ
R2
COUT1
3x100µF
316Ω
15
16
7
R5*
EN/FF1
EN/FF2
VCC
1.25V VDDQ/2
VTT
*SEE TABLE 1 ON PAGE 17 FOR
R5/R6 VALUES.
R3
1kΩ
VSEN2+
VSEN2-
VMON1
VMON2
PHASE1
PHASE2
PGOOD
R6*
R4
931Ω
COUT2
3x100µF
C1
4.7µF
17
3
CLKOUT
MODE
ISHARE
SYNC
ISL8225M
18
4
VDDQ
19
5
R7
12
10
24
1kΩ
20
2
COMP1
COMP2
R8
C2
1nF
324Ω
6
9
*SET THE CLKOUT VOLTAGE CLOSE TO 0.61V.
SEE DETAILS IN “FUNCTIONAL DESCRIPTION” ON PAGE 20
FIGURE 20. DDR/TRACKING USE
3.3V@10A
VOUT1
8V TO 20V
+
14
8
23
22
21
25
26
1
VIN
VIN1
VOUT1
VSEN1+
VSEN1-
VOUT2
R1
1kΩ
CIN1
CIN2
VIN2
330µF
4x22µF
COUT1
3x100µF
R2
221Ω
R5
15
16
7
EN/FF1
EN/FF2
VCC
7.15kΩ
5V@10A
VOUT2
R3
1kΩ
VSEN2+
VSEN2-
VMON1
VMON2
PHASE1
PHASE2
PGOOD
R4
137Ω
COUT2
3x100µF
R6
2.05kΩ
17
3
C1
4.7µF
CLKOUT
MODE
ISHARE
SYNC
ISL8225M
18
4
*SEE FIGURE 25, “RECOMMENDED
FREQUENCY VS VIN AT VOUT,” ON
PAGE 19 FOR THE FREQUENCY SETTING
FOR I/O CONDITIONS.
19
5
12
10
24
20
2
COMP1
COMP2
R7
88.7kΩ
6
9
*SEE FIGURE 31, “R
VS SWITCHING
SYNC
FREQUENCY,” ON PAGE 22 TO SELECT R7 FOR THE
DESIRED FREQUENCY OPERATION.
FIGURE 21. HIGH OUTPUT VOLTAGE APPLICATION WITH THE FREQUENCY SET AT 900kHz
FN7822.1
January 31, 2013
13
INTERSIL [ Intersil ]
