Type Survey and Key Data
Table 1: Type survey
Output 1
U
o1 nom
I
o1 nom
[V DC]
[A]
5.1
3.3
4.5
4.0
Output 2
Output power
P
o nom
[W]
30
22
Input Voltage Range and Efficiency
U
i min
...U
i max
typ
32...75 V DC
[%]
48 IMS 30-0503-9G
48 IMS 30-0302-9G
87
83
Option
U
o2 nom
[V DC]
3.3
1.8
I
o1 nom
[A]
6.0
5.0
i
i
Type Key
48 IMS 30 - 0503 -9 G i
Input voltage range
U
i
32...75 V DC
....................................
48
Series ...................................................................... IMS 30
Output voltage type output .................... ( 5.1 and 3.3Vout)
Operating ambient temperature range
T
A
–40...71°C .................................................. -9
Synchronous rectifier ...................................................... G
Option:
Inhibit ............................................................ i
Functional Description
The IMS 30 series of DC-DC converters are magnetic feed-
back controlled forward converters using current mode
PWM (Pulse Width Modulation).
This product range features synchronous rectifiers deliver-
ing in very high efficiency. The output voltage of these ver-
sions can be adjusted via the Trim input. The Trim input is
referenced to the secondary side and allows for program-
ming of the output voltage in the range of approximately 90
to 110% of
U
o nom
using an external resistor.
The voltage regulation is achieved with a magnetic feed-
back circuit providing excellent line and load regulation.
Current limitation is provided by the primary circuit, thus
limiting the total output power to approx. 130% of
P
o nom
(see:
Type Survey).
The shut down input allows remote
converter on/off.
Overtemperature protection will shut down the unit in ex-
cessive overload conditions with automatic restart.
Vi –
2
W
3
17
Trim
13
Uo1+
Vi+
1
11
Uo2+
SD
PUL
4
i
PWM
15
Com
4n7F
1500 V
Fig. 1
Block diagram (-0503, -0302 Outputs )
2/11
POWER-ONE [ POWER-ONE ]
