isl8120 Intersil Corporation, isl8120 Datasheet - Page 20

• Manufacturer Part Number: isl8120
• Description: Dual/n-phase Buck Pwm Controller With Integrated Drivers
• Manufacturer: Intersil Corporation

MODE
2A
2B
3A
3B
3C
5A
5B
5C
5D
7A
7B
7C
1
4
6
8
9
EN1/
FF1
(I)
0
0
1
-
-
-
-
-
-
-
-
-
-
-
-
1ST IC (I = INPUT; O = OUTPUT; I/O = INPUT AND OUTPUT, Bi-DIRECTION)
EN2/
FF2
(I)
0
1
0
-
-
-
-
-
-
-
-
-
-
-
-
VSEN2-
ACTIVE ACTIVE ACTIVE
<VCC -
<VCC -
<VCC -
<VCC-
0.7V
0.7V
0.7V
0.7V
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
(I)
-
-
Cascaded IC Operation MODEs 5A+5A+7A+5A+5A+5A/7A, No External Clock Required
ACTIVE ACTIVE 29% to 45% of
ACTIVE ACTIVE 45% to 62% of
ACTIVE ACTIVE > 62% of VCC (I)
ACTIVE ACTIVE < 29% of VCC (I)
FB2 (I)
GND
GND
GND
GND
VCC
VCC
VCC
VCC
External Clock or External Logic Circuits Required for Equal Phase Interval
20
-
-
VSEN2
GND
VCC
VCC
VCC
+ (I)
-
-
-
-
-
-
CLKOUT/REFIN
WRT 1ST
VCC (I)
VCC (I)
(I or O)
120°
60°
60°
60°
60°
90°
90°
90°
-
-
-
ISL8120
BOTH CHANNELS
BOTH CHANNELS
BOTH CHANNELS
BOTH CHANNELS
BOTH CHANNELS
BOTH CHANNELS
BOTH CHANNELS
BOTH CHANNELS
TABLE 1.
REPRESENTS
1
1
1
1
1
CHANNEL(S)
ISHARE (I/O)
ST
ST
ST
ST
ST
CURRENT
WHICH
CHANNEL
CHANNEL
CHANNEL
CHANNEL
CHANNEL
N/A
-
VMON2 to Keep
VMON2 to Keep
2ND CHANNEL
WRT 1ST (O)
PGOOD Valid
PGOOD Valid
VMON1 =
VMON1 =
180°
180°
180°
180°
180°
240°
180°
180°
180°
-60°
90°
0°
-
OPERATION
MODES OF OPERATION
of 2
5A or 7A
5A or 7A
MODE
3, 4
5A
5A
5A
2B
ND
-
-
-
-
-
-
-
-
IC
OPERATION
of 3
5A or 7A
5A or 7A
MODE
3 or 4
RD
-
-
-
-
-
-
-
-
-
-
-
-
IC
(1st IC in Mode
(1st IC in Mode
March 28, 2008
OUTPUT (See
11, or (PHASE
REGULATOR
REGULATOR
REGULATOR
5, 7, 8, 9, 10,
Description
DDR MODE
3 OUTPUTs
4 OUTPUTs
2 OUTPUTs
3 OUTPUTs
for Details)
DISABLED
12-PHASE
2-PHASE
6-PHASE
3-PHASE
4-PHASE
SINGLE
SINGLE
PHASE
PHASE
DUAL
DUAL
DUAL
FN6641.0
>12)
7A)
7A)