ISL6328 Datasheet, PDF (31/33 Pages) Intersil Corporation – Dual PWM Controller For Powering AMD SVI Split-Plane Processors

+5V
VCC
ISL6328
CS1-
CS1+
CS2-
CS2+
CS3-
CS3+
CS4-
CS4+
CS_NB-
CS_NB+
+12V
ENABLE
CORE_FB
ISEN1-VCC ^RSVD _TCOMP1
ISEN1+
TCOMP2
ISEN2-
ISEN2+
PWM3
PWM4
PWM3
PWM4
ISEN3-
PVCC
ISEN3+
GVOT
ISL6328
ISEN4-
ISEN4+
BOOT1
ISEN_NB-
ISEN_NB+
DRPCTRL
FS
OFS
OCP
SVC
SVD
PWROK
VDDPWRGD
APA
UGATE1
PHASE1
LGATE1
BOOT2
UGATE2
PHASE2
LGATE2
VSEN
RGND
BOOT_NB
UGATE_NB
PHASE_NB
EN
LGATE_NB
+12V
+12V
R_NTC^*
+12V
CS1-
CS1+
CS3-
CS3+
+12V
+12V
CS2-
CS2+
CORE_FB
+12V
CS_NB-
CS_NB+
CS4-
CS4+
Core
CPU
North
Bridge
ISL6614
BOOT1PWM1
PWM3
PWM2
PWM4
UGATE1
PHASE1
+12V
PVCC
LGATE1
VCC
BOOT2
GND
UGATE2
PHASE2
PGND
LGATE2
KELVIN
SENSE
LINES
KELVIN
SENSE
LINE
FB_PSI
FB
COMP
VSEN_NB
FB_NB
COMP_NB
GND
RED COMPONENTS:
LOCATE CLOSE TO IC TO
MINIMIZE CONNECTION PATH
BLUE COMPONENTS:
LOCATE NEAR LOAD
(MINIMIZE CONNECTION PATH)
MAGENTA COMPONENTS:
LOCATE CLOSE TO SWITCHING TRANSISTORS
(MINIMIZE CONNECTION PATH)
KEY
HEAVY TRACE ON CIRCUIT PLANE LAYER
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT PLANE LAYER
KELVIN TYPE TRACE/SENSE LINE
(Keep these traces away from any switching nodes)
VIA CONNECTION TO GROUND PLANE
*LOCATE NTC RESISTOR CLOSE TO PHASE1 INDUCTOR
FIGURE 26. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
31
FN7621.1
June 7, 2011