ISL6322 INTERSIL [Intersil Corporation], ISL6322 Datasheet - Page 40

• Manufacturer Part Number: ISL6322
• Description: Four-Phase Buck PWM Controller with Integrated MOSFET Drivers and I2C Interface for Intel VR10, VR11, and AMD Applications
• Manufacturer: INTERSIL [Intersil Corporation]

(CF1)
R
T
+5V
+12V
R
R
EN1
EN2
C
R
R
REF
OFS
SS
C
R
2
C
1
1
COMP
VID7
VID5
VID3
GND
VSEN
RGND
VCC
FS
REF
VID6
VID4
VID2
VID1
VID0
VRSEL
PGOOD
OFS
SDA
SS / RST / A0
SCL
EN
FB
IDROOP
40
FIGURE 29. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
R
ISL6322
FB
VDIFF
(MINIMIZE CONNECTION PATH)
PVCC1_2
UGATE2
UGATE3
UGATE1
PHASE1
PHASE2
PHASE3
LGATE1
LGATE2
LGATE3
EN_PH4
ISEN3-
ISEN3+
BOOT1
BOOT2
ISEN2+
BOOT3
ISEN4+
ISEN1-
ISEN1+
ISEN2-
PVCC3
ISEN4-
LOCATE CLOSE TO IC
PWM4
C
BOOT1
(CF2)
(CF2)
C
+12V
C
ISL6322
BOOT3
BOOT2
PVCC
PWM
VCC
ISL6612
BOOT
PHASE
+12V
+12V
+12V
UGATE
LGATE
GND
C
C
C
BIN1
BIN2
BIN3
KEY
+12V
LOCATE NEAR SWITCHING TRANSISTORS;
HEAVY TRACE ON CIRCUIT PLANE LAYER
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT PLANE LAYER
VIA CONNECTION TO GROUND PLANE
(MINIMIZE CONNECTION PATH)
C
BIN4
R
R
R
R
1
1
1
1
C
C
C
C
1
1
1
1
(MINIMIZE CONNECTION
LOCATE NEAR LOAD;
(C
HFOUT
)
PATH)
C
August 21, 2006
BOUT
LOAD
FN6328.0