Crane Aerospace & Electronics Power Solutions
SMTR Single, Dꢀꢁl ꢁnd Triple DC/DC Converters
28 VOꢂT INPuT – 30 WaTT – PENDINꢃ REVISION F REꢂEaSE
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
–P
OUT
=15W (50%)
V
IN
V
15W to 7.5W
7.5W to 15W
IN
+V
OUT
V
OUT
–V
OUT
50μs/div
25% 50%
500 µs / div
50μs/div
16 V TO 40 V
SMTR2805S TURN-ON INTO NO LOAD
SMTR2815D +V
STEP LOAD RESPONSE
OUT
SMTR2815D STEP LINE RESPONSE
1
Fi g u r e 15
Fi g u r e 16
Fi g u r e 17
10
9
8
7
–P
OUT
=15W (50%)
2812D
2805D
6
5
4
V
15W to 3W
3W to 15W
3
IN
2
2815D
1
+V
OUT
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
2815D
–V
OUT
2812D
2805D
50μs/div
10% 50%
+P
–P
0
3
6
9
12 15 18 21 24 27 30
200µs/div
OUT
OUT
30 27 24 21 18 15 12
9
6
3
0
SMTR2815D TURN-ON INTO NO LOAD
OUTPUT LOAD (Watts)
10% to 90% LOAD +V
90% to 10% LOAD –V
CROSS REGULATION
SMTR2815D +V
STEP LOAD RESPONSE
OUT
1
Fi g u r e 18
Fi g u r e 19
Fi g u r e 20
16.0
15.5
15.0
14.5
14.0
13.5
13.0
8
7
6
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
80
75
70
65
60
55
16V
2812D
2805D
40V
COND A
2815D
28V
COND B
2805D
2812D
9
12
15
18 21 24
27 30
10
20
30
40
50
5
10
15
20
25
30
OUTPUT POWER (Watts)
1% DROP
SMTR SINGLES AND DUALS
LOW LINE DROPOUT
OUTPUT LOAD (%)
OUTPUT POWER (WATTS)
SMTR28512T EFFICIENCY
COND. B: 50% LOAD +V, 50% to 10% –V
COND. A: 50% LOAD –V, 50% to 10% +V
CROSS REGULATION
Fi g u r e 21
Fi g u r e 22
Fi g u r e 23
ꢀotes:
1. Percent (%) of power refers to the percent of the total output power of the converter.
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Rev F - 20090324 - Pending Revision F Release
CRANE [ Crane Aerospace & Electronics. ]
