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IRVRM2 数据表(PDF) 5 Page - International Rectifier

部件名 IRVRM2
功能描述  Pentium II1 Power Supply Design Specification
PDF  8 Pages
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制造商  IRF [International Rectifier]
网页  http://www.irf.com
标志 IRF - International Rectifier

IRVRM2 数据表(HTML) 5 Page - International Rectifier

  IRVRM2 Datasheet HTML 1Page - International Rectifier IRVRM2 Datasheet HTML 2Page - International Rectifier IRVRM2 Datasheet HTML 3Page - International Rectifier IRVRM2 Datasheet HTML 4Page - International Rectifier IRVRM2 Datasheet HTML 5Page - International Rectifier IRVRM2 Datasheet HTML 6Page - International Rectifier IRVRM2 Datasheet HTML 7Page - International Rectifier IRVRM2 Datasheet HTML 8Page - International Rectifier  
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Q1 MOSFET Replacement
It would be very rare for any design to
operate at 12.7A continuous output. All three
MOSFET options given in Table 4 will
operate at 12.7A continuous reliably. All
three, however, will exceed the Intel
recommended 115°C maximum junction
temperature.
Perfomance using MOSFET replacement
Figures 9 thru 11 show that in most practical
cases the less expensive IRL3302S would be
the device of choice. Test conditions shown
on Figure 8.
Inductor Specifications
Assembly Options
Inductor Drawing
The specified inductors IR001 and IR002
can be purchased, assembled and tested (see
BOM).
IRVRM2
5
A more useful comparison is using the Intel
specified typical current on a continuous
basis, and adding higher current demand on
a pulsed basis. Figure 8 shows typical
waveforms and junction temperature
excursions. For a given “t1” pulse width
and “d” duty factor, there is an “I1” current
which will cause Q1 to reach the Intel
recommended 115°C maximum.
Eliminate L2
Inductor L2 may be eliminated if your design
does not require meeting the Intel
recommended input di/dt specification, or if
your design has additional external
inductance. Figures 21, 22, 23, 25 shows the
input di/dt both with and without L2.
Rectifier
International
Fig 8. Typical load current and T
j waveform
Fig 6. IR001
Fig 7. IR002
Fig 9.
I1 current boundary @ Tj
≤≤≤≤≤ 115°C (IRL3302S)
Fig 10.
I1 current boundary @ T
j ≤
≤≤≤≤ 115°C ( IRL3202S)
Fig 11.
I1 current boundary @ Tj
≤≤≤≤≤ 115°C ( IRL3102S)
Table 4
Continuous current boundary @ T
j ≤
≤≤≤≤ 115°C
Q1
CURRENT
IRVRM2a
IRL3102S
11.92A
IRVRM2b
IRL3202S
11.66A
IRVRM2c
IRL3302S
11.48A



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