M3H280512T Datasheet, PDF (4/8 Pages) International Rectifier – HIGH RELIABILITY RADIATION HARDENED DC/DC CONVERTERS

M3H-SERIES
Electrical Performance Characteristics ( continued )
Parameter
Group A
Subgroup
Inhibit Input
open circuit voltage
drive current ( sink )
voltage range
1,2,3
Current Limit Point
Expressed as a percentage
of full rated output power
1,2,3
Power dissipation, load fault (PD)
Output response to
step load changes (VTLD)
Recovery time,
step load changes (TTLD)
Output response to
step line changes (VTLN)
Recovery time,
step line changes (TTLN)
Turn-on Response
Overshoot (VOS)
(main)
( aux. )
1,2,3
4,5,6
4,5,6
4,5,6
4,5,6
4,5,6
Turn-on Delay (TDLY)
4,5,6
Capacitive Load (CL)
(main)
1
(Each aux. output)
Line Rejection
1
Isolation
1
Device Weight
MTBF
Conditions
-55°C ≤ TC ≤ +125°C
VIN = 28V DC ± 5%, CL = 0
unless otherwise specified
Note 1
Vout = 90% of Nominal, Notes 5, 9
Short Circuit, Overload
Half Load to/from Full Load, Notes 5, 10,14
Half Load to/from Full Load, Notes 10,11,14
18V to/from 50V
IOUT = 100% rated load, Notes 1,5,12
18V to/from 50V
IOUT = 100% rated load, Notes 1,5,11,12
No Load, Full Load; Notes 5,12,13
Notes 5, 12,13
IOUT = 100% rated load, No effect on DC
performance, Notes 1, 5, 7, 8
IOUT = 100% rated load
DC to 50KHz, Notes 1, 5
Input to Output or Any Pin to Case
except pin 10, test @ 500VDC
MIL-HDBK-217F2, SF, 35°C
Limits
Min
Nom
3.0
-0.5
-300
-300
1.0
40
60
100
1.5 x 10⁶
Max
5.0
100
50
135
18
300
200
300
200
10
10
10
1000
200
125
Unit
V
µA
V
%
W
mVpk
µs
mVpk
µs
%
ms
µF
dB
MΩ
g
Hrs
Notes. Electrical Performance Characteristics
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. Although operation with no load is permissible, light loading on the main (+5 volt) output may cause the output voltage of the auxiliary outputs
(±12 volt or ±15 volt) to drop out of regulation. It is therefore recommended that at least 200 mA or 20 percent of the total output power, whichever is
greater, be taken from the main (+5 volt) output.
4. Although operation with no load is permissible, heavy loading on the main (+5 volt) output may cause the output voltage of the auxiliary outputs
(±12 volt or ±15 volt) to rise out of regulation. It is therefore recommended that at least 50 mA or 20 percent of the total output power, whichever is
greater, be taken from the auxiliary (±12 volt or ±15 volt) outputs.
5. Unless otherwise specified, “Rated” load is 20W on the main (+5 volt) output and 10 watts each on the auxiliary (±12 volt or ±15 volt) outputs. Load
currents of up to 5A and ±1A on the main and auxiliary outputs respectively are acceptable as long as the total output power does not to exceed 40 watts.
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.
8. 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.
9. Overload power threshold is defined as the load set point such that V_OUT = 90% of nominal.
10. Load step transition time ≤ 10 µs.
11. Recovery time is measured from the initiation of the transient to where V_OUT has returned to within ±1% of its steady state value.
12. Line step transition time ≤ 100 µs.
13. 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 3) to the point where V_OUT = 90% of nominal.
14. Load is varied for output under test while the remaining outputs are loaded at 50%ofrated. Regulation relative to output voltage at 50% rated load.
15. For operation @ temperatures between +85°C and +125°C, derate the maximum input voltage linearly from 60V to 40V and the maximum output power
linearly from 100% to 75%.
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