ISL6323 Datasheet, PDF (33/34 Pages) Intersil Corporation – Hybrid SVI/PVI

ISL6323
R_APA
C_APA
C₂
C_C
R_C
FB
COMP
ISEN3+
ISEN3-
PWM3
R_FB
VSEN
BOOT1
UGATE1
PHASE1
APA
DVC
LGATE1
ISEN1-
ISEN1+
+5V
C_FILTER
VCC
OFS
R_OFS
PVCC1_2
BOOT2
UGATE2
FS
R_FS
PHASE2
R_SET
NC
NC
RSET
VFIXEN
SEL
SVD
SVC
VID4
VID5
PWROK
VDDPWRGD
GND
LGATE2
ISEN2-
ISEN2+
RGND
ISEN4+
ISEN4-
PWM4
+12V
ISL6323
OFF
ON
R_EN1
EN
R_EN2
PVCC_NB
BOOT_NB
UGATE_NB
PHASE_NB
LGATE_NB
ISEN_NB-
COMP_NB
FB_NB
R_{C_NB}
C_{C_NB}
ISEN_NB+
RGND_NB
R_{FB_NB}
+12V
C_BOOT
C_IN
R_{1_1}
C₁
R_{1_2}
+12V
R_{3_2}
C₃
R_{3_1}^CIN
C_BOOT
BOOT1
UGATE1
PHASE1
LGATE1
PGND
PWM1
C_FILTER
C_BOOT
+12V
V_CORE
C_IN
C_BULK
C_HF
R_{2_1}
C₂
R_{2_2}
CPU
LOAD
+12V
C_IN
C₄
R_{4_1}
R_{4_2}
ISL6614 ^+12V
BOOT2
C_BOOT
VCC
PVCC
UGATE2
PHASE2
GND
PWM2
LGATE2
C_FILTER
+12V
C_FILTER
C_{BOOT_NB}
C_IN
R_{1_NB C1_NB} ^CBULK
R_{2_NB}
V_NB
C_HF
NB
LOAD
KEY
HEAVY TRACE ON CIRCUIT PLANE LAYER
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT PLANE LAYER
VIA CONNECTION TO GROUND PLANE
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)
FIGURE 28. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
33
FN9278.2
April 7, 2008