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Part Name
Description
ISL6553 View Datasheet(PDF) - Renesas Electronics
Part Name
Description
Manufacturer
ISL6553
Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Renesas Electronics
ISL6553 Datasheet PDF : 15 Pages
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ISL6553
Block Diagram
PGOOD
VSEN
X 0.9
X1.15
+
UV
-
+
OVP
-
OV
LATCH
S
VCC
POWER-ON
RESET (POR)
CLOCK AND
SAWTOOTH
GENERATOR
THREE
STATE
FS/EN
COMP
SOFT-
START
AND FAULT
LOGIC
+
-
VID3
VID2
VID1
VID0
VID25mV
FB
+
-
D/A
+
E/A
-
I_TOT
CURRENT
CORRECTION
+
OC
-
+
+
I_TRIP
GND
Simplified Power System Diagram
VSEN
ISL6553
PWM 1
PWM 2
VID
SYNCHRONOUS
RECTIFIED BUCK
CHANNEL
SYNCHRONOUS
RECTIFIED BUCK
CHANNEL
FN4931 Rev 1.00
August 2004
+
PWM
-
+
PWM
-
PWM1
PWM2
ISEN1
ISEN2
MICROPROCESSOR
Page 2 of 15
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