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DC-DC Converters
Isolated and ISP
Series
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Isolated
Series
As well as voltage
conversion, this series provides input/output isolation, allowing use of
negative ground electronics on off-highway vehicles which typically employ
positive ground battery systems. May also be used as a Voltage Stabilizer for
sensitive equipment.
ISP
Series
offer the benefits of an isolated converter (above) plus protection against line
transients and voltage spikes typically caused by large DC motors and switching
transients often encountered on fork lifts, locomotives and light rail. A
special circuit clamps input spikes to a safe level, protecting both the
converter and the powered equipment.
This product series is further enhanced with extra rugged construction of case
and internal components for severe vibration applications.
Features:
Isolated & ISP Series
• Reverse polarity
protection
• Input fuse
• Output fuse
• Current limiting, short circuit proof output
• Automatic resetting thermal shutdown
• Input transient protection*
• High/low input voltage shutdown
• Polyurethane conformal coating on PC board
• Power “ON” light
• On/Off switch
*ISP Series only
Performance Specifications: Isolated and ISP Series
Download Data Sheet -
DC-DC Converters - Isolated and ISP Series
Output:
13.6 VDC (internally adjustable 12.6-14.5) or 24.5 VDC (or specify)
Ripple:
150 mV P-P Regulation: +/- 2% Line/Load Duty Cycle Ratings*: Intermittent -
20 minutes, max on time,20% duty, Continuous - 24 hours, 100% duty
*Current limit set at approximately 105% of
intermittent rating
Idle Current:
(including power "on" indicator light) approx. 50 mA
Operating Temp:
Isolated Series: 0-50° C; derate linearly from 100% @ 40° C
to 50% @ 50° C
ISP Series: see temperature rating curves (below)
Switching Frequency:
70Khz
Efficiency:
85% - typical.
DC Isolation:
Input/Output, Input/Chassis, Output/Chassis):
Isolated Series: 250 VDC
ISP Series: 1,400 VDC
Isolated
Series
|
Model
|
Input
Voltage
|
Output
Voltage
|
Output Amps
|
Case
Size
|
Weight
|
|
Intermittent
|
Continuous
|
Lbs
|
Kg
|
|
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
|
ISP Series
|
Model
|
Input
voltage
|
Output
voltage
|
Output Amps
|
Case
Size
|
Weight
|
|
Intermittent
|
Continuous
|
Lbs
|
Kg
|
|
36-12-6ISP†
|
18-65
|
13.6
|
6
|
6
|
C-7
|
5
|
2.3
|
|
36-24-3ISP
|
18-65
|
24.5
|
3
|
3
|
C-7
|
5
|
2.3
|
|
36-12-18ISP
|
20-65
|
13.6
|
18
|
10
|
C-6
|
8
|
3.6
|
|
36-24-9ISP
|
20-65
|
24.5
|
9
|
5
|
C-6
|
8
|
3.6
|
|
36-12-35ISP*
|
20-65
|
13.6
|
35
|
20
|
C-9
|
12
|
5.5
|
|
72-12-6ISP
|
42-90
|
13.6
|
6
|
6
|
C-7
|
5
|
2.3
|
|
72-24-3ISP
|
42-90
|
24.5
|
3
|
3
|
C-7
|
5
|
2.3
|
|
72-12-18ISP
|
42-90
|
13.6
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18
|
10
|
C-6
|
8
|
3.6
|
|
72-24-9ISP
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42-90
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24.5
|
9
|
5
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C-6
|
8
|
3.6
|
|
110-12-18ISP
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80-140
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13.6
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18
|
10
|
C-6
|
8
|
3.6
|
|
110-24-9ISP
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80-140
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24.5
|
9
|
5
|
C-6
|
8
|
3.6
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† This model EMC and safety
CE certified for sales within the European Union.
*Build to order only – 10 unit minimum |
ISP Surge Protection
Transient Energy Capability:
36 VDC Input: 140 joules (Watt-Seconds)
Peak Current, 2,000 Amps
72 & 110 VDC Input: 100 Joules (Watt-Seconds) Peak Current, 12,000 Amps
Temperature
Specifications - ISP Series
Operating Temperature -40° C to +80°C Thermal
shutdown @ 85° C Case Temperature
ISP Series
Temperature/Amperage Derating Curves
Options
• operation
as a battery charger or parallel/ redundant operation (contact factory)
• Other “Special” output voltages available
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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