isl6312a Intersil Corporation, isl6312a Datasheet - Page 33

• Manufacturer Part Number: isl6312a
• Description: Four-phase Buck Pwm Controller With Integrated Mosfet Drivers For Intel Vr10, Vr11, And Amd Applications
• Manufacturer: Intersil Corporation

(CF1)
R
T
+5V
+12V
R
DR
R
R
EN1
EN2
R
C
IOUT
R
REF
R
OFS
C
SS
R
2
C
1
1
COMP
VID7
VID5
VID3
GND
VSEN
RGND
VCC
FS
REF
VID6
VID4
VID2
VID1
VID0
VRSEL
PGOOD
IOUT
OFS
OVPSEL
SS
EN
DRSEL
FB
33
FIGURE 25. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
ISL6312A
R
FB
VDIFF
(MINIMIZE CONNECTION PATH)
PVCC1_2
UGATE1
PHASE1
UGATE2
PHASE2
UGATE3
PHASE3
LGATE3
EN_PH4
LGATE1
LGATE2
ISEN3-
ISEN3+
BOOT1
BOOT2
ISEN2+
BOOT3
ISEN4+
ISEN1-
ISEN1+
ISEN2-
PVCC3
ISEN4-
LOCATE CLOSE TO IC
PWM4
C
BOOT1
(CF2)
(CF2)
ISL6312A
C
+12V
C
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
BOUT
August 1, 2007
LOAD
FN9290.3