ISL6310_06 Datasheet, PDF (26/27 Pages) Intersil Corporation – Two-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers

ISL6310
+5V
C_HF0
R_OFST
R_FS
R_REF
C_REF
+12V
R₁
VDIFF
VSEN
RGND
C₁
FB
LOCATE CLOSE TO IC
(MINIMIZE CONNECTION PATH)
C₂
R₂
COMP
PVCC
BOOT1
UGATE1
C_HF01
C_BOOT1
+12V
C_HF1
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)
2PH
VCC
PHASE1
ISEN1
LGATE1
R_ISEN1
L_OUT1
OFST
FS
DAC
REF
ISL6310
C_BOUT (C_HFOUT)
REF1
REF0
OVP
PGOOD
to PVCC
GND
BOOT2
UGATE2
C_BOOT2
ENLL
IREF
DROOP
OCSET ICOMP
ISUM
R_COMP
R_OCSET
C_COMP
PHASE2
ISEN2
LGATE2
R_ISEN2
R_S
R_S
C_SUM
+12V
C_BIN2
C_HF2
L_OUT2
LOAD
LOCATE NEAR LOAD;
(MINIMIZE CONNECTION PATH)
FIGURE 27. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
26
FN9209.3
December 12, 2006