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International Rectifier Electronic Components Datasheet

ARM28XXT Datasheet

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

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ARM28XXT 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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International Rectifier Electronic Components Datasheet

ARM28XXT Datasheet

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

No Preview Available !

ARM28XXT 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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International Rectifier Electronic Components Datasheet

ARM28XXT Datasheet

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

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ARM28XXT pdf
ARM28XXT Series
Electrical Performance (Continued)
Parameter
Enable Input
open circuit voltage
drive current (sink)
voltage range
Synchronization Input
frequency range
pulse high level
pulse low level
pulse rise time
pulse duty cycle
Power dissipation, load fault
Output response to step load
changes Notes 7, 11
Recovery time from step load
changes Notes 11, 12
Output response to step line
changes Notes 10, 11
Recovery time from step line
changes Notes 10, 11,13
Turn on overshoot
Turn on delay Note 14
Capacitive load Notes 9, 10
Isolation
Symbol
Conditions
19 Vdc< VIN < 50Vdc
External clock signal on Sync. input (pin 4)
PD Short circuit, any output
10% Load to/from 50% load
VTLD
50% Load to/from 100% load
10% Load to/from 50% load
TTLD
50% Load to/from 100% load
VTLN
IOUT = 3000 mAdc
VIN = 19 V to/from 50 V
IOUT = ±500 mAdc
(main)
(dual)
IOUT = 3000 mAdc
TTLN VIN = 19 V to/from 50 V
IOUT = ±500 mAdc
(main)
(dual)
VOS IOUT = minimum and full rated
(main)
(dual)
TDLY IOUT = minimum and full rated
CL No effect on DC performance
(main)
(dual)
ISO 500VDC Input to Output or any pin to case
(except pin 12)
Min
3.0
0.1
-0.5
225
4.5
-0.5
40
20
-200
-200
-350
-1050
5.0
100
Max Units
5.0 V
mA
50.0 V
310
10.0
0.25
80
7.5
200
200
200
200
350
1050
500
500
500
1500
20
500
100
KHz
V
V
V/µs
%
W
mVPK
µs
mVPK
µs
mV
ms
µF
M
Notes to Specifications Table
1. Operation outside absolute maximum/minimum limits may cause permanent damage to the device. Extended operation at the limits may permanently
degrade performance and affect reliability.
2. Device performance specified in Electrical Performance table is guaranteed when operated within recommended limits. Operation outside
recommended limits is not specified.
3. Parameter measured from 28V to 19 V or to 50V while loads remain fixed.
4. Parameter measured from nominal to minimum or maximum load conditions while line remains fixed.
5. Up to 750 mA is available from the dual outputs provided the total output power does not exceed 30W.
6. Guaranteed for a bandwidth of DC to 20MHz. Tested using a 20KHz to 2MHz bandwidth.
7. Load current is stepped for output under test while other outputs are fixed at half rated load.
8. Load current is fixed for output under test while other output loads are varied for any combination of minimum to maximum.
9. A capacitive load of any value from 0 to the specified maximum is permitted without comprise to DC performance. A capacitive load in excess of the
maximum limit may interfere with the proper operation of the converter’s short circuit protection, causing erratic behavior during turn on.
10. Parameter is tested as part of design characterization or after design or process changes. Thereafter, parameters shall be guaranteed to the limits
specified in the table.
11. Load transient rate of change, di/dt 2AA/µ/µsS. ec.
12. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1% of its steady state value.
13. Line transient rate of change, dv/dt 50VV/µ/µsS. ec.
14. Turn on delay time is for either a step application of input power or a logical low to high transition on the enable pin (pin 3) while power is present at the
input.
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Part Number ARM28XXT
Description HYBRID - HIGH RELIABILITY 1 MEGA-RAD HARDENED DC/DC CONVERTER
Maker IRF
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