ART10012T IRF [International Rectifier], ART10012T Datasheet - Page 9

• Manufacturer Part Number: ART10012T
• Description: 28V Input, Triple Output / HYBRID - HIGH RELIABILITY RADIATION HARDENED DC/DC CONVERTER
• Manufacturer: IRF [International Rectifier]

Although internal filtering is provided at both the input and
output terminals of the ART28XX series, additional filtering
may be desirable in some applications to accommodate
more stringent system requirements.
While the internal input filter of Figure V keeps input ripple
current below 100 mA
to further attenuate this ripple to a level below the CE03
limits imposed by MIL-STD-461B. Figure VI is a general
diagram of the International Rectifier filter module designed
to operate in conjunction with the ART28XX series
converters to provide that attenuation.
This circuit as shown in Figure VI is constructed using the
same quality materials and processes as those employed
in the ART28XX series converters and is intended for use
in the same environments. This filter is fabricated in a
complementary package style whose output pin configuration
allows pin to pin connection between the filter and the
converter. More complete information on this filter can be
obtained from the ARF461 data sheet.
An external filter may also be added to the output where
circuit requirements dictate extremely low output ripple
noise. The output filter described by Figure VII has been
characterized with the ART2815T using the values shown
in the associated material list.
Additional Filtering
www.irf.com
Figure VI. External Input EMI Filter
p-p
, an external filter may be applied
It is important to be aware that when filtering high frequency
noise, parasitic circuit elements can easily dominate filter
performance. Therefore, it is incumbent on the designer to
exercise care when preparing a circuit layout for such
devices. Wire runs and lengths should be minimized, high
frequency loops should be avoided and careful attention
paid to the construction details of magnetic circuit elements.
Tight magnetic coupling will improve overall magnetic
performance and reduce stray magnetic fields.
Measurement techniques can impose a significant influ-
ence on results. All noise measurements should be mea-
sured with test leads as close to the device output pins as
physically possible. Probe ground leads should be kept to
a minimum length.
Return
Return
+5 V
+15V
-15V
15V
5V
Figure VII. External Output Filter
C1
C2
C3
C4
C5
L1
L2
ART28XXT Series
L3
L4
C7
C8
C6
+5V Out
Return
Return
+15V
-15V
+5V
15V
Out
Out
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