ISL8225M
Typical Application Circuits(Continued)
4.5V TO 20V
1.2V/90A
MASTER PHASE
R1
14
8
23
22
VIN
VIN1
VOUT1
VOUT
+
CIN1
2x470µF
VSEN1+
VIN2
4x22µF
1kΩ
R2
1kΩ
COUT1
4x100µF
15
16
7
21
25
R4*
EN/FF1
EN/FF2
VCC
VSEN1-
VOUT2
*SEE TABLE 1 ON PAGE 17
FOR R3/R4 VALUES.
SLAVE
VCC1
26
1
VCC1
VSEN2+
VSEN2-
VMON1
VMON2
PHASE1
PHASE2
PGOOD
R3*
C1
4.7µF
17
3
CLKOUT
MODE
ISHARE
SYNC
ISL8225M
18
4
VCC1
19
5
12
10
24
R5
3.3kΩ
20
2
COMP1
COMP2
PGOOD
6
9
C8
470pF
14
8
23
22
21
SLAVE
VIN1
VOUT1
VSEN1+
VSEN1-
VOUT2
VIN2
VCC2
COUT2
4x100µF
15
16
7
EN/FF1
EN/FF2
VCC
CIN2
4x22µF
25
26
1
SLAVE
VSEN2+
VSEN2-
VMON1
VMON2
PHASE1
PHASE2
PGOOD
VCC2
17
3
CLKOUT
MODE
ISL8225M
C2
4.7µF
R6*
500Ω
18
4
19
5
R7*
500Ω
ISHARE
SYNC
12
10
24
20
2
*KEEP R6/R7 THE SAME
RATIO AS R1/R2. EACH VMON
PIN CAN HAVE SEPERATE
RESISTOR DIVIDER TO
MONITOR THE OUTPUT
VOLTAGE.
COMP1
COMP2
C3
470pF
6
9
C4
470pF
14
23 SLAVE
VIN1
VOUT1
VSEN1+
VSEN1-
VOUT2
8
15
16
7
22
VIN2
VCC3
COUT3
4x100µF
21
EN/FF1
EN/FF2
VCC
CIN3
4x22µF
25
26
1
SLAVE
VCC3
VSEN2+
VSEN2-
VMON1
VMON2
PHASE1
PHASE2
PGOOD
17
3
CLKOUT
MODE
ISHARE
SYNC
ISL8225M
C5
4.7µF
18
4
19
5
12
10
24
20
2
COMP1
COMP2
C6
470pF
C7
470pF
6
9
FIGURE 24. SIX-PHASE 90A 1.2V OUTPUT CIRCUIT
FN7822.1
January 31, 2013
16
INTERSIL [ Intersil ]
