ISL6540A Datasheet, PDF (17/22 Pages) Intersil Corporation – Single-Phase Buck PWM Controller with Integrated High Speed MOSFET Driver and Pre-Biased Load Capability

ISL6540A
+3.3V TO +20V
R_VIN
(C_F1)
R_CC
L_IN
(C_F2) ^DBOOT
(C_HFIN)
C_BIN
R_VFF
(C_F3)
VCC
VIN
VFF
C_VFF
EN
REFIN
REFOUT
VCC
PVCC
INTERNAL BIAS
LINEAR REGULATOR
BOOT
HSOC
R_HSOC
C_HSOC
UGATE
PHASE
LGATE
LOCATE NEAR SWITCHING TRANSISTORS
(MINIMIZE CONNECTION PATH)
C_BOOT
Q1
L_OUT
(C_HFOUT)
Q2
V_OUT
C_BOUT
C_{PG_DLY}
PG
PG_DLY
R_FS
FS
ISL6540A
LSOC ^RLSOC
C_LSOC
COMP
LOCATE NEAR LOAD
(MINIMIZE CONNECTION PATH)
R_LS-
R_LS+
MARCTRL
R_OFS+
C₁
FB
C₂
C₃
R₃
R₂
R₁
R_MARG
R_OFS-
OFS+
OFS-
VMON
VSEN+
SS
VSEN-
C_SS
LINDRV GND PGND
LOCATE CLOSE TO IC
(MINIMIZE CONNECTION PATH)
R_FB
V_SENSE+
C_SEN
R_OS
KEY
HEAVY TRACE ON CIRCUIT PLANE LAYER
ISLAND ON/POWER PLANE LAYER
ISLAND ON CIRCUIT PLANE LAYER
VIA CONNECTION TO GROUND PLANE
V_SENSE-
FIGURE 8. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
17
FN6288.5
October 7, 2008