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IR3553 Datasheet(PDF) 12 Page - International Rectifier

Part No. IR3553
Description  40A Integrated PowIRstage
Download  22 Pages
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Maker  IRF [International Rectifier]
Homepage  http://www.irf.com
Logo IRF - International Rectifier

IR3553 Datasheet(HTML) 12 Page - International Rectifier

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July 16, 2014 | DATASHEET V3.3
12
IR3553
40A Integrated PowIRstage®
TYPICAL OPERATING CHARACTERISTICS (CONTINUED)
Circuit of Figure 32, VIN=12V, VOUT=1.2V, ƒSW = 400kHz, L=150nH (0.29mΩ), VCC=7V, TAMBIENT = 25°C, no heat sink, no air flow,
8-layer PCB board of 3.7” (L) x 2.6” (W), no PWM controller loss, no inductor loss, unless specified otherwise.
Figure 25: Diode Emulation Setup through BBRK# Input
Figure 26: Diode Emulation Setup through BBRK# Input
Figure 27: Current Sense Amplifier Output vs. Current
Figure 28: Current Sense Amplifier Output, IOUT = 0A
Figure 29: Current Sense Amplifier Output, IOUT = 20A
Figure 30: Current Sense Amplifier Output, IOUT = 20A, 300kHz
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0
5
10
15
20
25
30
35
40
Output Current (A)
VCC
2V/div
BBRK#
2V/div
4ms/div
VCC
2V/div
BBRK#
2V/div
4ms/div
V(IOUT)-
V(REFIN)
0.2V/div
IL
10A/div
2us/div
SW
20V/div
V(IOUT)-
V(REFIN)
0.2V/div
IL
10A/div
2us/div
SW
20V/div
V(IOUT)-
V(REFIN)
0.2V/div
IL
10A/div
2us/div
SW
20V/div


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