ISL6566A Datasheet, PDF (27/28 Pages) Intersil Corporation – Three-Phase Buck PWM Controller with Two Integrated MOSFET Drivers and One External Driver Signal

ISL6566A
C₂
LOCATE CLOSE TO IC
R_FB
(MINIMIZE CONNECTION PATH)
VDIFF
C₁
FB
R₁
COMP
PVCC1
VSEN
RGND
+5V
(CF1)
VCC
R_OFS
OFS
BOOT1
UGATE1
PHASE1
ISEN1
LGATE1
(CF2)
C_BOOT1
R_ISEN1
+12V
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)
FS
R_T
REF
C_REF
VID4
VID3
VID2
VID1
VID0
VID12.5
VRM10
PGOOD
ISL6566A
PVCC2
BOOT2
UGATE2
PHASE2
ISEN2
LGATE2
ISEN3
+12V
GND
ENLL
IREF
OCSET
ICOMP
EN_PH3
ISUM
PWM3
+12V
(CF2)
C_BIN2
C_BOOT2
R_ISEN2
R_ISEN3
+12V
C_BOOT3
BOOT
VCC UGATE
PVCC
PHASE
ISL6612
LGATE
PWM _GND
+12V
(CF2)
C_BIN3
R_COMP
R_S
R_OCSET
R_S
R_S
C_COMP
(C_HFOUT)
C_BOUT
LOAD
LOCATE NEAR
LOAD (MINIMIZE
CONNECTION PATH)
FIGURE 25. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
27
FN9200.2
July 27, 2005