DC-DC Converters
Standard & Isolated Series
Standard Series
Convert 20-50 VDC to 12 or 24 VDC output for powering communication/ navigation equipment, on negative ground systems. (see Isolated series, below for positive ground applications.) Ideal for powering voice, data and navigation transceivers in mobile and marine applications.
• Excellent Regulation: Output voltage maintained within 1% under all line and load
conditions within rating.• Heat generated by semi-conductors is extracted and dissipated
by large heat sink fins that maximize air contact for cool operation and long life of components.
• Polyurethane conformal coating on PC boards and corrosion-resistant anodized aluminum case
with heavy duty shock mounts assure survival in hostile environments.
• Numerous converter and load protection circuits: Current limiting*; automatic thermal shutdown;
short circuit proof*; reverse polarity and overvoltage protection*.
* Except 3 Amp. Model.
• Carries the CE mark
Isolated series
Same features as Standard Series, but with the additional capability of permitting connection of negative ground gear to positive or floating ground battery systems, or vice-versa. Many models may also be used as 12 or 24 volt
stabilizers for highly input voltage sensitive equipment (see below)
Input range:10-56 VDC; positive, negative or floating ground.
Output: 12 or 24 VDC, 3 to 35 amps.
Options
• 24 VDC output (see specs at below)
• Operation as battery charger or parallel redundant operation* – derate to continuous duty rating (contact factory)
• Extreme vibration mounting kit. (See below)
* Except Model: 24-12-3.
Model |
Input
voltage |
Output
voltage |
Output Amps |
Case
Size |
Weight |
Intermittent |
Continuous |
(Lbs) |
(Kg.) |
Standard Series |
24-12-3 |
17-32 |
13.6 |
3 |
3 |
C-11 |
1 |
.45 |
32-12-6 |
20-50 |
13.6 |
6 |
6 |
C-10 |
2.5 |
.9 |
32-24-6 |
32-50 |
24.5 |
6 |
6 |
C-10 |
2.5 |
.9 |
32-12-10 |
20-50 |
13.6 |
10 |
10 |
C-2 |
4 |
1.8 |
32-24-10 |
32-50 |
24.5 |
10 |
10 |
C-2 |
4 |
1.8 |
32-12-15 |
20-50 |
13.6 |
15 |
15 |
C-2 |
5 |
2.3 |
32-24-15 |
32-50 |
24.5 |
15 |
15 |
C-2 |
5 |
2.3 |
32-12-25 |
20-50 |
13.6 |
25 |
20 |
C-3 |
7.5 |
3.4 |
32-24-25 |
32-50 |
24.5 |
25 |
20 |
C-3 |
7.5 |
3.4 |
32-12-35 |
20-50 |
13.6 |
35 |
30 |
C-4 |
12 |
5.5 |
32-24-35 |
32-50 |
24.5 |
35 |
30 |
C-4 |
12 |
5.5 |
32-12-50 |
20-50 |
13.6 |
50 |
40 |
C-5 |
16 |
7.3 |
32-24-50 |
32-50 |
24.5 |
50 |
40 |
C-5 |
16 |
7.3 |
Isolated Series |
12-12-12I |
10-16* |
13.6 |
12 |
8 |
C-8 |
6 |
2.7 |
12-24-6I |
10-16* |
24.5 |
6 |
4 |
C-8 |
6 |
2.7 |
12-12-35I |
10-16* |
13.6 |
35 |
20 |
C-9 |
12 |
5.5 |
12-24-18I |
10-16* |
24.5 |
18 |
10 |
C-9 |
12 |
5.5 |
48-12-6I |
20-56 |
13.6 |
6 |
6 |
C-7 |
7 |
2.7 |
48-24-3I |
20-56 |
24.5 |
3 |
3 |
C-7 |
7 |
2.7 |
48-12-12I |
20-56 |
13.6 |
12 |
8 |
C-8 |
6 |
2.7 |
48-24-6I |
20-56 |
24.5 |
6 |
4 |
C-8 |
6 |
2.7 |
48-12-18I |
20-56 |
13.6 |
18 |
10 |
C-8 |
8 |
3.6 |
48-24-9I |
20-56 |
24.5 |
9 |
5 |
C-8 |
8 |
3.6 |
48-12-35I |
20-56 |
13.6 |
35 |
20 |
C-9 |
12 |
5.5 |
48-24-18I |
20-56 |
24.5 |
18 |
10 |
C-9 |
12 |
5.5 |
*11.5 VDC minimum start-up voltage, then operates @ 10-16 VDC from 1 amp minimum to full load |
Performance Specifications – Standard & Isolated Series
Output: 13.6 VDC (internally adjustable 12.6-14.5) or 24.5 VDC (or specify)
- except 24-12-3
Ripple: 150 mV P-P maximum
Regulation:
Standard: 1% Line/Load
Isolated: 2% Line/Load
except † 3% Line/Load
Duty Cycle Ratings*
Intermittent - 20 minutes max on time, 20% duty. Current limit set at approx. 105% of intermittent rating
Continuous - 24 hours, 100% duty
Idle Current:
Standard Series: Less than 100 mA (including power “ON” light )
Isolated Series: approx. 50 mA
Operating Temp: 0-50° C, Derate Linearly From 100% @ 40° C to 50% @ 50° C Thermal shutdown @ 70° C Case Temperature
Model 24-12-3I: Full Output -25° C to +30° C; Derate linearly from 100% @ +30° C to 45% @ +50° C
Switching Frequency:
Standard: 40 Khz**
Isolated: 70Khz
Efficiency: 85% - Typical.
Isolation:
Output/Chassis; Input/chassis: 250 VDC
Input/Output: 250 VDC (Isolated Series only)
Certification: Carries the CE mark (Standard Series only)
Dimensions
Case |
inches |
Centimeters |
H |
W |
D |
H |
W |
D |
| C-1 |
2.7 |
4.5 |
6.0 |
6.9 |
11.4 |
15.2 |
| C-2 |
4.5 |
5.9 |
11.0 |
11.4 |
15.0 |
27.9 |
| C-3 |
6.0 |
4.7 |
14.0 |
15.2 |
11.9 |
35.6 |
| C-4 |
6.0 |
4.7 |
16.0 |
15.2 |
11.9 |
40.6 |
| C-5 |
6.2 |
6.8 |
18.1 |
15.7 |
17.3 |
46.0 |
| C-7 |
4.25 |
5.9 |
7.7 |
10.8 |
15.0 |
19.6 |
| C-8 |
4.25 |
5.9 |
14.0 |
10.8 |
15.0 |
35.6 |
| C-9 |
6.0 |
6.8 |
16.5 |
15.2 |
17.3 |
41.9 |
| C-10 |
2.8 |
4.2 |
10.4 |
7.1 |
10.7 |
26.4 |
| C-11 |
3.5 |
3.5 |
1.75 |
8.9 |
8.9 |
4.5 |
|
Extreme vibration mounting kit
The Extreme Vibration Mounting Kit is available to protect NEWMAR power converters from the extreme stresses of shock and vibration when mounted on high–vibration vehicles.
The kit (pictured here) replaces the standard vibration kit provided with the unit and fits into the unit's mounting flange to act as a "super shock absorber" for electronics in high-vibe applications. It is available to fit all NEWMAR units from 2 to 70 lbs. Specify KIT–L for units which weigh 2–15 lbs. and Kit–H for units which weigh 16-70 lbs. |
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