Crane Aerospace & Electronics Power Solutions
SMTR Single, Dꢀꢁl ꢁnd Triple DC/DC Converters
28 VOꢂT INPuT – 30 WaTT – PENDINꢃ REVISION F REꢂEaSE
Electrical Characteristics: -55 to +125° C T , 28 VDC Vin, 100% load, no irraditaion, unless otherwise specified.
C
SIꢀꢁLE OUTPUT MODELS
SMTR282805S
SMTR2812S
SMTR2815S
unitS
parameter
COnDitiOnS
25°C
MIꢀ
TYP
5.00
—
MAX
MIꢀ
11.88
11.64
0
TYP
12.00
—
MAX
12.12
12.36
2.5
MIꢀ
14.85
14.70
0
TYP
15.00
—
MAX
15.15
15.30
2.0
Output VOltage
4.95
4.85
0
5.05
5.15
5.0
25
VDC
Output Current
Vin = 16 t O 40 VDC
Vin = 16 t O 40 VDC
25°C
—
—
—
A
2
Output pOwer
—
—
—
—
30
—
—
30
W
Output ripple
10 khz t O 2 mhz
–
20
—
50
—
15
40
—
15
40
mV p-p
—
90
—
—
90
—
—
90
line regulatiOn
lOaD regulatiOn
input VOltage
Vin = 16 t O 40 VDC
nO lOaD tO Full
—
—
50
—
—
50
—
—
50
mV
mV
—
—
50
—
—
50
—
—
50
nO lOaD tO Full
COntinuOuS
16
28
40
16
28
40
16
28
40
VDC
V
1
TRAꢀSIEꢀT 50 ms
25°C, nO lOaD
nO lOaD
—
—
—
—
—
35
—
—
50
75
75
8
—
—
—
—
—
35
—
—
50
75
75
8
—
—
—
—
—
35
—
—
50
75
75
8
input Current
mA
mA p-p
%
inhiBiteD
input ripple
10 khz - 10 mhz
25°C
—
—
50
—
—
50
—
—
50
3
Current
eFFiCienCy
74
71
78
—
—
—
78
75
83
—
—
—
79
76
84
—
—
—
7
lOaD Fault
ShOrt CirCuit
—
—
—
—
—
—
12
5
—
—
—
—
—
—
12
5
—
—
—
—
—
—
12
5
W
ms
pOwer DiSSipatiOn
1
reCOVery
Step lOaD
reSpOnSe
50% - 100% - 50% lOaD
tranSient
±300
±400
±500
mV pk
5
1, 4
reCOVery
—
—
—
—
200
—
—
—
—
200
—
—
—
—
200
µs
Step line
reSpOnSe
tranSient
±300
±500
±600
mV pk
1, 5
4
reCOVery
—
—
300
—
—
300
—
—
300
µs
16 - 40 -16 VDC
6
Start-up
Delay
—
—
—
—
—
—
5
—
—
—
—
—
—
5
—
—
—
—
—
—
5
ms
1
OVerShOOt Full lOaD
50
120
600
150
750
mV pk
1
OVerShOOt nO lOaD
250
1
CapaCitiVe lOaD
25°C , nO eFFeCt On
DC perFOrmanCe
—
—
300
—
—
3000
—
—
3000
µF
ꢀotes
(All temperatures in tables and notes refer to case temperature, TC.)
1. ꢃꢀꢁrꢁnteed ꢆꢄ design, not tested.
4. Recovery time is measured from application of the transient to the point at which
Vout is within 1% of final value.
2. Operation is limited below 16 V (see Figure 22).
5. Transient transition time > 10 µs.
3. Tested with 6800 pF ceramic bypass capacitors connected externally from input
common to case.
6. Tested on release from inhibit.
7. Short circuit protection not guaranteed above 125°C case temperature.
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Rev F - 20090324 - Pending Revision F Release
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