HR121-2812 Datasheet, PDF (4/6 Pages) Crane Aerospace & Electronics. – DC/DC CONVERTERS 28 VOLT INPUT

DC/DC CONVERTERS
HR120 SERIES
12 WATT
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, unless otherwise specified.
90
80
16V
40V
70
28V
60
90
16V
80
70
60
40V
28V
90
19V
80
70
60
40V
28V
50
2 4 6 8 10 12 14
Output Power (Watts)
HR121-2805 Efficiency
FIGURE 2
90
16V
80
70
60
40V
28V
50
2 4 6 8 10 12 14
Output Power (Watts)
HR122-2812 Efficiency
FIGURE 5
50
2
4
6
8 10 12 14
Output Power (Watts)
HR121-2812 Efficiency
FIGURE 3
90
19V
80
70
60
40V
28V
50
2 4 6 8 10 12 14
Output Power (Watts)
HR122-2815 Efficiency
FIGURE 6
50
2 4 6 8 10 12 14
Output Power (Watts)
HR121-2815 Efficiency
FIGURE 4
10
8
6
4
2812
Cond. A
2
0 2815
2
–4
–6
2812
Cond. B
–8
–10
0
10
2
30 40 50
Output Load (%)
Condition A: 50% Load Pos. Vout, 50% to 20% Neg. Vout
Condition B: 50% Load Neg. Vout, 50% to 20% Pos. Vout
HR122 Negative Output Voltage
Cross Regulation
FIGURE 7
20
15
10
5
0 ₂₈₁₅
–5
–10
2812
–15
–20
0
20 40 60 80 100
Output Load (%)
Positive Output 20% to 80% Load
Negative Output 80% to 20% Load
HR122 Negative Output Voltage
Cross Regulation
FIGURE 8
19
18
17
2815
16
15
2812
14
13
2805
12
11
2 4 6 8 10 12 14
Output Power (Watts)
50 mV Drop
HR121 Low Line Dropout
FIGURE 9
19
18
17
2815
16
15
14
13
2812
12
11
2 4 6 8 10 12 14
Output Power (Watts)
50 mV Drop
HR122 Low Line Dropout
FIGURE 10
B4-50
21821-009-DTS Rev A
DQ# 2011
All technical information is believed to be accurate, but no responsibility is assumed
for errors or omissions. Interpoint reserves the right to make changes in products
or specifications without notice. HR120 Series is a trademark of Interpoint.
Copyright © 1994 - 1999 Interpoint. All rights reserved.