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IR3550 Datasheet(PDF) 3 Page - International Rectifier

Part # IR3550
Description  60A Integrated PowIRstage
PDF  22 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3550 Datasheet(HTML) 3 Page - International Rectifier

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July 16, 2014 | DATASHEET V3.2
3
IR3550
60A Integrated PowIRstage®
TYPICAL APPLICATION DIAGRAM (CONTINUED)
SW
PWM
VIN
PGND
Gate
Drivers
and
Current
Sense
Amplifier
IOUT
VCC
PHSFLT#
VCC
BOOST
VIN
PWM
REFIN
PHSFLT#
BBRK#
BBRK#
CS+
LGND
CSIN-
CSIN+
IR3550
4.5V to 7V
4.5V to 15V
C2
10uF x 2
C5
0.22uF
C3
0.22uF
R1
10k
C4
0.22uF
R2
2.49k
L1
150nH
3
18-23
24
25
26
27
28
30
29
1
2
16, 17
6-15
C1
0.22uF
PGND 4
31
TGND
No Connect
CS-
VOUT
C7
470uF
C6
22uF
Figure 5: Application Circuit without Current Sense Amplifier
FUNCTIONAL BLOCK DIAGRAM
VIN
SW
PWM
6
7
8
9
10
11
12
13
14
15
18
19
20
21
22
23
VIN
VIN
VIN
VIN
VIN
SW
SW
SW
SW
SW
SW
SW
SW
SW
1
31
16
17
CSIN-
PGND
PGND
TGND
24
BOOST
Power-on
Reset
(POR),
3.3V
Reference,
and
Dead-time
Control
26
IOUT
30
VCC
3
BBRK#
27
5
32
GATEL
GATEL
Driver
Driver
25
PHSFLT#
2
CSIN+
28
LGND
29
REFIN
Current Sense
Amplifier
MOSFET
& Thermal
Detection
S
Q
R
POR
3.3V
VCC
-
+
3.3V
4
PGND
200k
18k
-
+
Diode
Emulation
Comparator
IR3550
Offset -+
VCC
Figure 6: IR3550 Functional Block Diagram



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