Crane Aerospace & Electronics Power Solutions
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.
C
SIꢀꢁLE OUTPUT MODELS
SMRT2812S
SMRT2815S
unItS
parameter
COnDItIOnS
MIꢀ
TYP
MAX
MIꢀ
TYP
MAX
Output VOltage
Output Current
11.76 12.00 12.24 14.70 15.00 15.30
VDC
A
2
—
0
—
—
—
5
2.92
35
—
0
—
—
—
5
2.33
35
2
Output pOwer
V
= 19 tO 56 VDC
W
In
Output rIpple
10 khz - 20 mhz
—
—
—
—
200
30
—
—
—
—
180
30
mV p-p
mV
2
lIne regulatIOn
V
= 19, 50 VDC
In
lOaD regulatIOn
5
40
5
40
mV
V
= 19, 50 VDC
—
90
—
90
In
1
tOtal regulatIOn
all COnDItIOnS OF
lIne, lOaD, agIng,
temp anD raDIatIOn
V
10.9
—
13.1
14.0
—
16.0
VDC
OUT
Input VOltage
Input Current
COntInuOuS
19
0
28
—
—
—
10
—
—
—
—
—
56
80
19
0
28
—
—
—
10
—
—
—
—
—
56
80
VDC
V
1
tranSIent 100 ms
InhIbIteD
nO lOaD
—
—
—
75
—
—
—
—
50
—
—
—
75
—
—
—
—
50
mA
110
50
110
50
3
Input rIpple Current
eFFICIenCy
10 kHz - 20 MHz
mA p-p
%
—
—
4, 5
lOaD Fault
POWERꢀDISSIPATION
20
20
W
1
reCOVery
25
25
ms
5, 6, 7
Step lOaD reSpOnSe
tranSIent
reCOVery
±575
3
±575
3
mV pk
ms
1, 5, 6
Step lIne reSpOnSe
19 - 50 - 19 V
In
—
—
—
—
—
—
±700
4
—
—
—
—
—
—
±700
4
mV pk
ms
tranSIent
reCOVery
8
Start-up
Delay
nO lOaD anD Full
25
25
ms
OVerShOOt
—
—
—
—
120
—
—
—
—
150
mV pk
µF
1
CapaCItIVe lOaD
unCOnDItIOnally
Stable, Start-up
Delay InCreaSeD
t
= 25°C
5000
5000
C
ꢀotes
1. ꢊꢀꢄꢃꢄnꢁꢂꢂd by dꢂꢈign, noꢁ ꢁꢂꢈꢁꢂd.
2. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs.
3. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple
current is much less, the limit in the characteristic table is based on measurement resolution..
4. Maximum power dissipation when output is shorted.
5. Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.
6. Transition time >10 µs.
7. Half load to/from full load.
8. Measured from release of inhibit or input voltage step
www.interpoint.com
Page 8 of 19
SMRT28 Rev E - 20100216
CRANE [ Crane Aerospace & Electronics. ]
