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Robust 14VDC and 24VDC (13.5VDC to 28VDC) to
12V DC/DC converter |
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12 volt DC/DC converters with 13.5 to 28 VDC input |
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These are regulated switching power
converters (switchmode), designed to allow the use of 12 volt equipment 24V vehicles. These 12V
output converters have been designed to be very rugged electrically and can be operated
continuously at 75°C (65°C for the 2A version).
These are also known as 12 volt
voltage reducers, and voltage regulators.
Custom output voltages are available from 3.3VDC
to the input voltage minus 1.5 volts (10.5VDC for a 12 volt input, 22.5 for a 24 volt input)
Prices:
PST-DCZ1203 12V
1.25A
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| Quantity |
Price |
| 1-49 |
$47.60 |
| 50-99 |
$39.70 |
| 100-199 |
$35.08 |
| 200+ |
$33.00 |
PST-DCZ1203-W weather
resistant 12V 1.25A
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| Quantity |
Price |
| 1-49 |
$61.00 |
| 50-99 |
$50.80 |
| 100-199 |
$44.95 |
| 200+ |
$42.25 |
| Note: weather resistant
versions have wire leads instead of screw terminals |
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PST-DCZ1205 12V 2A
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| Quantity |
Price |
| 1-49 |
$57.60 |
| 50-99 |
$47.00 |
| 100-199 |
$40.00 |
| 200+ |
$38.20 |
PST-DCZ1205-W weather resistant
12V 2A
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| Quantity |
Price |
| 1-49 |
$73.80 |
| 50-99 |
$61.50 |
| 100-199 |
$54.40 |
| 200+ |
$51.10 |
| Note: weather resistant versions
have wire leads instead of screw terminals |
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Electrical
Specifications |
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1.25 Amp version |
2 Amp Version |
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Output Voltage |
12.0 VDC ± 0.1 VDC |
12.0 VDC ± 0.1 VDC |
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Readily Available Custom
Output Voltages |
3VDC to 13VDC |
3VDC to 13VDC |
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Maximum steady state
input voltage range |
13.5 VDC to 28 VDC
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13.5 VDC to 28
VDC |
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Nominal continuous output
current when input voltage is between 8VDC and 20VDC |
1.25A |
2.0A |
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Line regulation |
± 0.5% |
± 0.5% |
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Load regulation |
± 1.0% |
± 1.0% |
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Minimum input voltage for
load regulation of 10 %, see Note 1 |
13.5 VDC (1 minute
duration) |
13.5 VDC (1 minute
duration) |
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Maximum output ripple
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10mV p-p |
25mV p-p |
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Maximum switching noise
level |
90mV p-p |
90mV p-p |
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Maximum operating
temperature range |
-40°C to 75°C
(-40°F to 167°F) |
-40°C to 65°C
(-40°F to 149°F) |
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Maximum storage
temperature range |
-40°C to 90°C (-
40°F to 194°F) |
-40°C to 90°C (-
40°F to 194°F) |
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Minimum efficiency, see
Figure 1 |
78% 24 VDC input, 0.15A
load |
77% 24 VDC input, 1A
load |
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Maximum efficiency,
see Figure 1 |
89% 12 VDC input, 1.0A
load |
88% 12 VDC input, 1.0A
load |
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Isolation |
Common ground, the
negative input is tied to the negative output. The frame is isolated. |
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Protection
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Overload
protection |
If there is a short
circuit connection or other overload connection is sensed, the unit will automatically limit
the output current and, depending on severity, will go into a hiccup mode. See Note
2. |
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Over temperature
protection |
If an extreme over
temperature condition occurs the unit will shut down until the temperature is reduced. See Note
3. |
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Reverse polarity
protection |
If an
in-line 4A fast acting fuse (5A for the 1205 model) is connected as shown in Figure 2, then the
unit will be protected from reverse polarity connection. If the fuse is used and there is
a reverse polarity connection, the fuse will blow and protect the unit from damage. See Note
4. |
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Physical
Specifications for both models |
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Weight |
108
grams or about 3.8 ounces |
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Dimensions |
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120mm
(4.73 inches) |
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55mm
(2.17 inches) |
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33mm
(1.30 inches) |
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Connections
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Input connector |
2 position screw terminal
block will accept 14awg to 24 awg wire |
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Output
connector |
2 position screw terminal
block will accept 14awg to 24 awg wire |
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| Input and output connectors for weather resistant
versions |
18AWG Red and
Black wires, 6 inches (15 cm) long |
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Note 1: Extended operation at voltages less than 13.5
VDC is not recommended although the unit will work at voltages lower than this with reduced
load regulation.
Note 2: If an overload is sensed, the unit will automatically limit the
output current and reduce the output voltage. If the output voltage is excessively reduced to
limit current, the unit will go into a hiccup mode and wait until the overload is removed to
restore power. This dual-mode overload protection system allows the unit to be protected from
continuous short circuit connection and other overload conditions.
Note 3: Extended
operation at temperatures above 75C can damage the unit and will void the warranty.
Note
4: If the in-line 4A fast-acting fuse is not connected as shown in Figure 2, a reverse polarity
connection can damage the unit and will void the warranty.
Typical efficiency curve for
the 5VDC 3Amp version
Efficiency curves for the 5VDC 5Amp DC-DC
converter
 
Advantages:
 Inexpensive Switchmode DC/DC Converter.
High efficiency.
Excellent line and load regulation.
Wide input
voltage range. |
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PowerStream Technologies: 1163 S.
1680 West. Orem Utah 84058
Phone: 801-764-9060
Fax: 801-764-9061
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© Copyright 2000, 2002, 2003, 2004, 2005, 2006, 2007,
2008, 2009, 2010 Lund Instrument Engineering, Inc. All rights reserved |
24 to 12 volt DC/DC converter
28 to 12 volt DC/DC converter |
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