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| ISL6431 Datasheet, PDF (2/10 Pages) Intersil Corporation – Advanced Pulse-Width Modulation (PWM) Controller for Home Gateways | |||
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Block Diagram
ISL6431
VCC
SAMPLE
AND
HOLD
+
-
OC
COMPARATOR
POR AND
SOFTSTART
+
0.8V
-
FB
COMP/OCSET
20µA
ERROR
AMP
+
-
PWM
COMPARATOR
+
-
INHIBIT
GATE
CONTROL
PWM LOGIC VCC
OSCILLATOR
FIXED 300kHz
GND
BOOT
UGATE
PHASE
LGATE
Typical Application
VCC
C3
C4
VCC
R1
5
BOOT
1
ISL6431
COMP/OCSET
7
UGATE
2
PHASE
R2
8
C2
C1
63
LGATE
4
FB
GND
C5
DBOOT
C6
LOUT
C7
R3
R4
+VO = 0.8 to VIN
2
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