H Series Data Sheet
50 Watt DC-DC Cassette Converters
REV. MAR 27, 2006
Page 9 of 19
www.power-one.com
Table 7b: R 2 for Vo > Vo nom (conditions: Vi nom, Io nom, rounded up to resistor values E 96); R1 =
Vo nom = 5.1 V
Vo nom = 12 V
Vo nom = 15 V
Vo nom = 24 V
Vo nom = 48 V
Vo [V]
R2 [k
Ω]
Vo [V]
R2 [k
Ω]
Vo [V]
R2 [k
Ω]
Vo [V]
R2 [k
Ω]
Vo [V]
R2 [k
Ω]
5.15
464
12.1
1780
15.2
1470
24.25
3160
48.5
6810
5.20
215
12.2
909
15.4
750
24.50
1620
49.0
3480
5.25
147
12.3
619
15.6
511
24.75
1100
49.5
2370
5.30
110
12.4
464
15.8
383
25.00
825
50.0
1780
5.35
90.9
12.5
383
16.0
332
25.25
715
50.5
1470
5.40
78.7
12.6
316
16.2
274
25.50
590
51.0
1270
5.45
68.1
12.7
274
16.4
237
25.75
511
51.5
1100
5.50
61.9
12.8
249
16.5
226
26.00
453
52.0
953
13.0
200
26.25
402
52.5
845
13.2
169
26.40
383
52.8
806
Table 7a: R1 for Vo < Vo nom (conditions: Vi nom, Io nom, rounded up to resistor values E 96); R2 =
Vo nom = 5.1 V
Uo nom = 12 V
Vo nom = 15 V
Vo nom = 24 V
Vo nom = 48 V
Vo [V]
R1 [k
Ω]
Vo [V]
R1 [k
Ω]
Vo [V]
R1 [k
Ω]
Vo [V]
R1 [k
Ω]
Vo [V]
R1 [k
Ω]
0.5
0.432
2.0
0.806
2.0
0.619
4.0
0.806
8.0
0.806
1.0
0.976
3.0
1.33
4.0
1.47
6.0
1.33
12.0
1.33
1.5
1.65
4.0
2.0
6.0
2.67
8.0
2.0
16.0
2.0
2.61
5.0
2.87
8.0
4.53
10.0
2.87
20.0
2.87
2.5
3.83
6.0
4.02
9.0
6.04
12.0
4.02
24.0
4.02
3.0
5.76
7.0
5.62
10.0
8.06
14.0
5.62
28.0
5.62
3.5
8.66
8.0
8.06
11.0
16.0
8.06
32.0
8.06
4.0
14.7
9.0
12.1
12.0
16.2
18.0
12.1
36.0
12.1
4.5
30.1
10.0
20.0
13.0
26.1
20.0
40.0
20.0
5.0
200.0
11.0
44.2
14.0
56.2
22.0
44.2
44.0
44.2
Display Status of LEDs
Fig. 11
LEDs
"OK"
and "i" status versus input voltage
Conditions: Io
≤ Io nom, TC ≤ TC max, Vinh ≤ 0.8 V
Vi uv = undervoltage lockout, Vi ov = overvoltage lockout
LED "OK" status versus output current
Conditions: Vi min to Vi max, TC
≤ TC max, Vinh ≤ 0.8 V
LED "i"versus case temperature
Conditions: Vi min to Vi max, Io
≤ Io nom, Vinh ≤ 0.8 V
LED "i"versus Vinh
Conditions: Vi min to Vi max, Io
≤ Io nom, TC ≤ TC max
V
o1 > 0.95 to 0.98Vo1 adj
V
i max
V
i ov
V
i min
V
i uv
U
i
V
i abs
OK
i
V
o1 > 0.95 to 0.98Vo1 adj
I
o nom
I
oL
I
o
OK
V
o1 < 0.95 to 0.98Vo1 adj
T
C
i
T
C max
T
PTC threshold
V
i inh
i
+50 V
+0.8 V
+2.4 V
-50 V
V
inh threshold
LED off
LED on
LED Status undefined
06090