ISL6333_14 Datasheet, PDF (38/40 Pages) Intersil Corporation – Three-Phase Buck PWM Controller with Integrated MOSFET Drivers and Light Load Efficiency Enhancements for Intel VR11.1 Applications

ISL6333, ISL6333A, ISL6333B, ISL6333C
R_FB
R₂ C₂
C_DVC R_DVC
+5V VCC
C₃
+5V
(CF1)
DVC VDIFF
IDROOP
FB
C₁
R₁
COMP
R_APA
APA
VCC
VSEN RGND
RSET
BYP1
PVCC1
BOOT1
UGATE1
PHASE1
R_SET
(CF1)
(CF2)
C_BOOT1
R_UGATE
+12V
R_OFS
LGATE1
OFS
ISEN1-
ISEN1+
FS
+12V
R_T
REF
C_REF
ISL6333
PVCC2_3
(CF3)
C_BOOT2
SS
BOOT2
R_SS
UGATE2
PHASE2
R_UGATE
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
PSI#
VR_RDY
EN
IMON
R_IMON
GND
LGATE2
ISEN2-
ISEN2+
PUVCC
BOOT3
UGATE3
PHASE3
(CF4)
C_BOOT3
R_UGATE
+12V
LGATE3
ISEN3-
ISEN3+
KEY
HEAVY TRACE ON CIRCUIT PLANE LAYER
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT PLANE LAYER
VIA CONNECTION TO GROUND PLANE
LOCATE CLOSE TO IC
(MINIMIZE CONNECTION PATH)
C_BIN1
LOCATE NEAR SWITCHING TRANSISTORS;
(MINIMIZE CONNECTION PATH)
R₁ C₁
C_BIN2
C_BIN3
R₁ C₁
(C_HFOUT) C_BOUT
LOAD
LOCATE NEAR LOAD;
(MINIMIZE CONNECTION
PATH)
R₁ C₁
FIGURE 30. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
38
FN6520.3
October 8, 2010