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S2812S Datasheet(PDF) 6 Page - International Rectifier

Part No. S2812S
Description  HYBRID-HIGH RELIABILITY RADIATION HARDENED LOW POWER DC-DC CONVERTER
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

S2812S Datasheet(HTML) 6 Page - International Rectifier

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S-SERIES
(28V Input, Single/Dual Output)
1.
Parameter is tested as part of design characterization or after design changes. Thereafter, parameter
shall be guaranteed to the limits specified.
2.
Parameter verified during line and load regulation tests.
3.
Output load current must be distributed such that at least 20% of the total load current is being provided by
one of the outputs.
4.
Load currents split equally between outputs on dual output models. For dual output models, the output may
not meet regulation limits but the converter will not be damaged under this condition.
5.
Cross regulation is measured with 20% rated load on output under test while changing the load on the
other output from 20% to 80% of rated.
6.
Guaranteed for a D.C. to 20MHz bandwidth. Tested using a 20KHz to 10MHz bandwidth.
7.
Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A
capacitive load in excess of the maximum limit may interfere with the proper operation of the converter’s
overload protection, causing erratic behavior during turn-on.
8.
Overload power dissipation is defined as the device power dissipation with the load set such that VOUT =
90% of nominal.
9.
Load step transition time
≥ 10 µs.
10. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1% of
its steady state value.
11. Line step transition time
≥ 100 µs.
12. Turn-on delay time from either a step application of input power or a logic low to a logic high transition on
the inhibit pin (pin 4) to the point where VOUT = 90% of nominal.
13. Current limit point expressed as a percentage of full rated load current.
14. Total Regulation includes all combinations of line and load compared to the nominal output voltage. For dual
models all line, load, and cross regulation conditions are tested per Note 4 and Note 5.
Notes: Electrical Performance Characteristics
Radiation Performance Characteristics
International Rectifier currently does not have a DLA Land and Maritime certified Radiation Hardness
Assurance Program.
Test
Conditions
Min
Typ
Unit
MIL-PRF-883, Method 1019.5
Total Ionizing Dose (Gamma)
Operating bias applied during exposure,
Half Rated Load, VIN = 28V
100
Krads(Si)
Heavy Ions (LET)
Single Event Effects
Operating bias applied during exposure,
SEU, SEL, SEGR, SEB
Full Rated Load, VIN = 18V, 28V & 40V
82
MeVxcm
2/mg
Test lab: Cyclotron Institute,
Texas A & M University


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