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International Rectifier Electronic Components Datasheet



ARM2812T

HYBRID - HIGH RELIABILITY 1 MEGA-RAD HARDENED DC/DC CONVERTER


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ARM2812T pdf
PD - 94530B
HYBRID - HIGH RELIABILITY
1 MEGA-RAD HARDENED
DC/DC CONVERTER
ARM28XXT SERIES
28V Input, Triple Output
Description
The ARM Series of three output DC/DC converters are
designed specifically for use in the high-dose radiation
environments encountered during deep space planetary
missions. The extremely high level of radiation tolerance
inherent in the ARM design is assured as a result of
extensive research, thorough analysis and testing,
careful selection of components and lot verification
testing of finished hybrids. Many of the best circuit
design features characterizing earlier International
Rectifier products have been incorporated into the ARM
topology. Capable of uniformly high performance
through long term exposures in radiation intense
environments, this series sets the standard for distributed
power systems demanding high performance and
reliability.
The ARM converters are hermetically sealed in a
rugged, low profile package utilizing copper core pins
to minimize resistive DC losses. Long-term hermeticity
is assured through use of parallel seam welded lid
attachment along with International Rectifier’s rugged
ceramic pin-to-package seal. Axial lead orientation
facilitates preferred bulkhead mounting to the principal
heat-dissipating surface.
Manufactured in a facility fully qualified to MIL-PRF-
38534, these converters are fabricated utilizing DSCC
qualified processes. For available screening options
refer to device screening table in the data sheet.
ARM
Features
n Total Dose > 1MRad (Si)
n SEE Hardened to LET up to 83 Mev.cm2/mg
n Derated per MIL-STD-975 & MIL-STD-1547
n Output Power Range 3 to 30 Watts
n 19 to 50 Volt Input Range
n Input Undervoltage Lockout
n High Electrical Efficiency > 80%
n Full Performance from -55°C to +125°C
n Continuous Short Circuit Protection
n 12.8 W / in3 Output Power Density
n True Hermetic Package
n External Inhibit Port
n Externally Synchronizable
n Fault Tolerant Design
n 5V, ±12V or 5V, ±15V Outputs Available
Variations in electrical, mechanical and screening
specifications may be accommodated. Contact IR Santa
Clara for special requirements.
www.irf.com
1
08/11/06
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ARM2812T pdf
ARM28XXT Series
Specifications
Absolute Maximum Ratings
Recommended Operating Conditions
Input Voltage range
-0.5V to +80VDC Input Voltage range
Minimum Output Current
Soldering temperature
Storage case temperature
5% Maximum rated
current, any Output
Output Power
300°C for 10 seconds Operating case
-65°C to +135°C
temperature
+19V to +60VDC
+19V to +50V for full derating to MIL-STD-975
3.0W to 30W
-55°C to +125°C
-55°C to +85°C for full derating to MIL-STD-975
Electrical Performance -55°C < TCASE < +125°C, VIN=28V, CL=0 unless otherwise specified.
Parameter
Output voltage accuracy
Output power Note 5
Output current Note 5
Line regulation Note 3
Load regulation Note 4
Cross regulation Note 8
Total regulation
Input current
Output ripple voltage Note 6
Input ripple current Note 6
Switching frequency
Efficiency
Symbol
Conditions
VOUT
IOUT = 1.5Adc, TC = +25°C
(main)
IOUT = ±250mAdc, TC = +25°C ARM2812(dual)
IOUT = ±250mAdc, TC = +25°C ARM2815(dual)
POUT 19 Vdc< VIN < 50Vdc
IOUT 19 Vdc< VIN < 50Vdc
(main)
(dual)
VRLINE
VRLOAD
150 mAdc < IOUT < 3000 mAdc
19 Vdc< VIN < 50Vdc
±75 mAdc < IOUT < ±750 mAdc
150 mAdc < IOUT < 3000 mAdc
19 Vdc< VIN < 50Vdc
±75 mAdc < IOUT < ±750 mAdc
VRCROSS 19 Vdc< VIN < 50Vdc
(main)
(dual)
(main)
(dual)
(main)
(dual)
All conditions of Line, Load,
(main)
VR Cross Regulation, Aging,
Temperature and Radiation ARM2812(dual)
ARM2815(dual)
IOUT = minimum rated, Pin 3 open
IIN
Pin 3 shorted to pin 2 (disabled)
VRIP 19 Vdc< VIN < 50Vdc
IOUT = 3000 mAdc (main), ±500 mAdc (dual)
IRIP 19 Vdc< VIN < 50Vdc
IOUT = 3000 mAdc (main), ±500 mAdc (dual)
FS Sychronization input open. (pin 6)
Eff IOUT = 3000 mAdc (main), ±500 mAdc (dual)
Min
4.95
±11.50
±14.50
3.0
150
75
-15
-60
-180
-300
-10
-500
4.8
±11.1
±13.9
Max
5.05
±12.50
±15.15
30
3000
750
+15
+60
+180
+300
+10
+500
5.2
±12.9
±16.0
250
8.0
100
Units
Vdc
W
mAdc
mV
mV
mV
V
mA
mVp.p
150 mAp.p
225 275 KHz
80 %
For Notes to Specifications, refer to page 3
2
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Part Number ARM2812T
Description HYBRID - HIGH RELIABILITY 1 MEGA-RAD HARDENED DC/DC CONVERTER
Maker IRF - IRF
Total Page 13 Pages
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