Rugged Environment
DC-DC Converters <40 W
3 Watt-Family
Electrical Input and Output Data
General Conditions: TA = 25°C, unless otherwise specified
Table 5: Input Data
Input
.. IPS/IPW 3-05 .. .. IPS/IPW 3-12 .. .. IPS/IPW 3-15 ..
min typ max min typ max min typ max
Characteristics
Conditions
Unit
Ui
Input voltage
range
24 IPS/IPW
48 IPS/IPW
TA min...TA max
Io = 0...Io nom
10
18
33
72
10
18
33
72
10
18
33
72
V DC
Ui abs
Input voltage
limits without
any damage
24 IPS/IPW 1
48 IPS/IPW 2
0
0
45
75
0
0
45
75
0
0
45
75
Ii o
No load input current
Ui nom = 24 V, Io = 0
Ui nom = 48 V, Io = 0
5
3
5
3
5
3
mA
Ii SD
Ii L
Input current in
shutdown condition
Ui min...Ui max
TA min...TA max
1.3
1.25 Ii
30
1.3
1.25 Ii
30
1.3
1.25 Ii
30
Input current limitation
response
Ui min...Ui max
TA min...TA max
Io = 0...Io nom
ii rfi
RFI current at the input
mApp
V DC
USD
Shutdown voltage
for converter
operating
not operating
open or 8...10
–0.3...+2
open or 8...10
–0.3...+2
open or 8...10
–0.3...+2
ISD
fs
Shutdown current
for converter
operating
not operating
+1...+5
–25...–35
+1...+5
–25...–35
+1...+5
–25...–35
µA
Switching frequency
Ui min...max, Io nom
TA min...TA max
130
130
130
kHz
1 35 V DC for 500 ms, repetition rate 50 s; 45 V DC for 10 ms repetition rate 10 s; according to Siemens standard SN 26555, section 9
2 The applied minimum load must be 25% between 72.0...75.0 V DC
Table 6: Output Data
Output
.. IPS/IPW 3-05 ..
.. IPS/IPW 3-12 ..
.. IPS/IPW 3-15 ..
min typ max
12.24 14.70 15.30
Characteristics
Conditions
Ui nom, Io nom
Ui min…Ui max
min typ max
min typ max
Unit
V DC
mA
Uo
Output voltage
Nominal output Group 01
current
4.90
5.10
11.76
Io nom
500
250
250
125
200
100
Group 02/03 TA min...TA max
uo
Output voltage noise
(BW = 20 MHz)
Ui min...Ui max
Io nom
100
100
100
mVpp
∆Uo U
∆Uo I
Static line regulation
Static load regulation
±10
±12
±15
mV
%
Ui min...Ui max
0...5
0...2 1
0...2 1
Io nom...0.25 Io nom
αUo
Temperature coefficient
Ui nom, Io nom
±0.02
±0.02
±0.02
16+5/–0%
15
%/K
V
Output overvoltage clamping
5.6 +5/–0%
13 +5/–0%
Co ext
Maximum admissible
capacitive load
33
15
µF
1 0...5% for the galvanically isolated second output of the types ..05-12.. and ..05-15..
Double and dual output units should have the same (%) load conditions at both outputs to comply with above specifications
Table 7: Efficiency
Efficiency
.. IPS/IPW 3-05 ..
.. IPS/IPW 3-12 ..
.. IPS/IPW 3-15 ..
Characteristics
Conditions
min typ max
min typ max
min typ max
Unit
%
η
Efficiency
Ui nom = 24 V, Io nom
Ui nom = 48 V, Io nom
78
80
80
82
78
80
80
82
78
80
80
82
Edition 2/96 - © Melcher AG
6 - 13
MELCHER
The Power Partners.