ISL78201 Datasheet, PDF (5/23 Pages) Intersil Corporation – 40V 2.5A Regulator with Integrated High-side MOSFET for Synchronous Buck or Boost Buck Converter

ISL78201
Typical Application Schematic I
PGOOD
EN
MODE
SYNC
AUXVCC
VIN
BOOT
VCC
ILIMIT
SS
ISL78201 _PHASE
LGATE
EXT_BOOST
FS
SGND
PGND
FB
COMP
VIN
VOUT
PGOOD
EN
MODE
SYNC
AUXVCC
VIN
BOOT
VCC
ILIMIT
SS
ISL78201 _PHASE
LGATE
PGND
EXT_BOOST
FS
SGND
FB
COMP
VIN
VOUT
FIGURE 4A. SYNCHRONOUS BUCK
FIGURE 4B. NON-SYNCHRONOUS BUCK
Typical Application Schematic II - V_CC Switch Over to V_OUT
PGOOD
EN
MODE
SYNC
AUXVCC
VIN
BOOT
VCC
ILIMIT
SS
ISL78201 _PHASE
LGATE
EXT_BOOST
FS
SGND
PGND
FB
COMP
VIN
VOUT
PGOOD
EN
MODE
SYNC
AUXVCC
VIN
BOOT
VCC
ILIMIT
SS
ISL78201 _PHASE
LGATE
PGND
EXT_BOOST
FS
SGND
FB
COMP
VIN
VOUT
FIGURE 5A. SYNCHRONOUS BUCK
FIGURE 5B. NON-SYNCHRONOUS BUCK
Typical Application Schematic III - Boost Buck Converters
Battery
R1
+
R2
PGOOD
EN
MODE
SYNC
VCC
ILIMIT
SS
EXT_BOOST
LGATE
AUXVCC
ISL78201
VIN
BOOT
PHASE
FS
SGND
PGND
FB
COMP
+
R3
R4
VOUT
PGOOD
EN
SYNC
EXT_BOOST
AUXVCC
VIN
VCC
ILIMIT
SS
FS
BOOT
ISL78201 _PHASE
PGND
LGATE
SGND
FB
COMP
1M
130k
VCC
VIN
VOUT
FIGURE 6A. 2-STAGE BOOST BUCK
FIGURE 6B. NON-INVERTING SINGLE INDUCTOR BUCK BOOST
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5
FN8615.1
March 31, 2015