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ISL6440IAZ-TK Datasheet(PDF) 3 Page - Intersil Corporation

Part # ISL6440IAZ-TK
Description  300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6440IAZ-TK Datasheet(HTML) 3 Page - Intersil Corporation

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Block Diagram
ERROR AMP 1
FB1
180k
Ω
PWM1
+ 0.8V
ISEN1
SAMPLE
CURRENT
SAMPLE
CURRENT
PHASE1
VCC_5V
UGATE1
BOOT1
LGATE1
PGND
+
0.8V REFERENCE
OCSET1
ERROR AMP 2
ADAPTIVE DEAD-TIME
VSEN2
18.5pF
1400k
Ω
180k
Ω
PWM2
+
0.8V
ISEN2
SAMPLE
CURRENT
SAMPLE
CURRENT
PHASE2
VCC
UGATE2
BOOT2
LGATE2
PGND
DIODE EMULATION
V/I SAMPLE TIMING
+
0.8V REFERENCE
OCSET2
VIN
VCC
DUTY CYCLE RAMP GENERATOR
PWM CHANNEL PHASE CONTROL
OC2
OC1
2 CLOCK CYCLES
SAME STATE FOR
REQUIRED TO LATCH
OVERCURRENT FAULT
2 CLOCK CYCLES
SAME STATE FOR
REQUIRED TO LATCH
OVERCURRENT FAULT
VIN
PGOOD
UV
PGOOD
18.5pF
1400k
Ω
UV
PGOOD
ADAPTIVE DEAD-TIME
DIODE EMULATION
V/I SAMPLE TIMING
OC1
POR
FAULT LATCH
BIAS SUPPLIES
REFERENCE
ENABLE
SOFT-START
SGND
SD1
SD2
SS1
SOFT2
OC2
REF
REF
16k
Ω
16k
Ω
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
VCC
FB3


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