ISL6322G Datasheet, PDF (38/39 Pages) Intersil Corporation – Two-Phase Buck PWM Controller with Integrated MOSFET Drivers, I2C Interface and Phase Dropping

ISL6322G
C₃
C₁
R_FB
R₂ C₂
LOCATE CLOSE TO IC
(MINIMIZE CONNECTION PATH)
R₁
FB
COMP
VDIFF
+5V
(CF1)
VSEN
RGND
VCC
R_OFS
OFS
FS
R_T
REF
C_REF
SCL
SDA
SS / RST / A0
R_SS
+12V
BOOT1
UGATE1
C_BOOT1
PHASE1
LGATE1
ISEN1-
ISEN1+
+12V
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
VRSEL
PGOOD
EN_PH2
R_EN1
EN
R_EN2
R_IOUT
IOUT
GND
ISL6322G
PVCC
BOOT2
UGATE2
PHASE2
LGATE2
ISEN2-
ISEN2+
NC
+12V
(CF2)
C_BOOT2
KEY
HEAVY TRACE ON CIRCUIT PLANE LAYER
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT PLANE LAYER
VIA CONNECTION TO GROUND PLANE
C_BIN1
LOCATE NEAR SWITCHING TRANSISTORS;
(MINIMIZE CONNECTION PATH)
R₁ C₁
C_BIN2
(C_HFOUT) C_BOUT
LOAD
R₁ C₁
LOCATE NEAR LOAD;
(MINIMIZE CONNECTION
PATH)
FIGURE 26. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
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38
FN6715.0
May 22, 2008