ISL8225M

FN7822 Rev 2.00

Page 21 of 34

December 8, 2014

TABLE 3. ISL8225M OPERATION MODES

1ST MODULE (I = INPUT; O = OUTPUT; I/O = INPUT AND OUTPUT, BI-DIRECTION)

MODES OF OPERATION

OUTPUT (SEE

DESCRIPTION

FOR DETAILS)

OPERATION

MODE

MODULE

OPERATION

MODE

MODULE

MODE

EN1/FF1

(I)

EN2/FF

2 (I)

VSEN2-

(I)

MODE

(I)

VSEN2+

(I)

CLKOUT/RE

(I OR O)

VMON2

(Note 14)

VMON1

MODULE

(Note 14)

(Note 13)

10

0

-

-

-

-

-

-

-

-

-

Disabled

2A

0

1

Active

Active Active

-

Active

-

VMON1 =

VMON2 to Keep

PGOOD Valid

--

Single Phase

2B

1

0

-

-

-

-

-

-

VMON1 =

VMON2 to Keep

PGOOD Valid

--

Single Phase

3A

1

1

Active

-

0°

-

-

Dual

Regulator

3B

1

1

Active

-

90°

-

-

Dual

Regulator

3C

1

1

(I)

Active

-

180°

-

-

Dual

Regulator

41

1

(I)

Active

-

-60°

-

-

DDR Mode

5A

GND

-

60°

VMON1 or

Divider

-

180°

-

-

2-Phase

5B

GND

-

60°

Divider

Divider

180°

5B

5B

6-Phase

5C

GND

-

60°

VMON1 or

Divider

Active

180°

5C

5C

3 Outputs

6

GND

120°

953Ω//

22nF

Active

240°

2B

-

3-Phase

7A

90°

953Ω//

22nF

Divider

180°

7A

-

4-Phase

7B

90°

953Ω//

22nF

Active

180°

7B

-

2 Outputs

Mode 7A)

7C

90°

953Ω//

22nF

Active

180°

3, 4

-

3 Outputs

Mode 7A)

8

Cascaded Module Operation MODEs 5B+5B+7A+5B+5B+5B/7A, No External Clock Required

12-Phase

9

External Clock or External Logic Circuits Required for Equal Phase Interval

5, 7, 8, 9, 10,

11, or (PHASE

>12)

NOTE:

column. For example, 90° means Channel 2 lags Channel 1 by 90°; -60° means Channel 2 leads Channel 1 by 60°.

14. “VMON1” means that the pin is tied to the VMON1 pin of the same module.

“Divider” means that there is a resistor divider from VOUT to SGND; refer to Figure 26.“

953Ω//22nF” means that there are 953Ω resistor and 22nF connecting the pin to SGND; refer to Figure 24.