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Robust 3VDC DC/DC Converter, input
range 8VDC to 28VDC (12VDC and 24VDC) |
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3 volt
DC/DC converters with 8 to 28 VDC input |
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These are regulated switching power
converters (switchmode), designed to allow the use of 3 volt equipment in 12V or 24V vehicles.
These 3V output converters have been designed to be very rugged electrically and can be
operated continuously at 75°C (65°C for the 5A version).
These are also known
as 3 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-DCZ0303 3V
3A
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| Quantity |
Price |
| 1-49 |
$47.60 |
| 50-99 |
$39.70 |
| 100-199 |
$35.08 |
| 200+ |
$33.00 |
PST-DCZ0303-W water
resistant 3V 3A
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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-DCZ0305 3V 5A
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| Quantity |
Price |
| 1-49 |
$57.60 |
| 50-99 |
$47.00 |
| 100-199 |
$40.00 |
| 200+ |
$38.20 |
PST-DCZ0305-W water resistant
3V 5A
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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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3 Amp version |
5 Amp Version |
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Output Voltage |
3.0 VDC ± 0.1 VDC |
3.0 VDC ± 0.1 VDC |
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Readily Available Custom
Output Voltages |
3VDC to
9VDC
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3VDC to
9VDC
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Maximum steady state input
voltage range |
8 VDC to 28 VDC |
8 VDC to 28 VDC |
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Nominal continuous output current
when input voltage is between 8VDC and 20VDC |
3.0A |
5.0A |
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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 |
7 VDC (1 minute duration)
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7 VDC (20% sag) (1 minute
duration) |
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Maximum output ripple |
10mV p-p |
25mV p-p |
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Maximum switching noise level
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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
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77% 24 VDC input, 1A
load |
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Maximum efficiency,
see Figure 1 |
89% 12 VDC input, 1.0A load
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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
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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
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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
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If an in-line 4A
fast acting fuse (5A for the 5A 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 8.0 VDC is
not recommended although the unit will work at voltages lower than this with reduced load
regulation. With voltages lower than 7.0 VDC, output voltage will drop out until the voltage is
increased.
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 model
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, 2011 Lund Instrument Engineering, Inc. All rights reserved |
12 to 3 volt DC/DC converter
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