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jAugust 23, 2020

Robust adjustable DC/DC converter

3 amp 12V to 9V DC/DC converter 5 Amp DC/DC step-down converters with the range of 3.5VDC to 35VDC input, user adjusable

These adjustable buck converters are regulated switching power converters (switchmode), designed to efficiently reduce the input voltage. They will take a wide range of input voltages, but the input voltage must be at least 0.6 volts higher than the output voltage. So you can output 12V, but the input voltage must be at least 12.6V.
The trim pot on the top surface is used to adjust the voltage, but specify what output voltage you want and we will adjust it before shipping.

  Quantity 1-9 10-99 100-999 1000+
PST-DCP-XX (specify output voltage) add_to_cart.gif $21.60 $18.30 $16.50 $12.30
PST-DCP (customer will adjust the voltage) add_to_cart.gif $18.80 $16.70 $15.80 $12.30
Optional barrel socket to screw terminal adapters
adapters with a barrel connector input and screw terminal output
5.5 x 2.1 mm barrel socket
$2.50 each
5.5 x 2.1 mm barrel plug to screw terminal adapter
5.5 x 2.1 mm barrel plug
$2.50 each
Optional DIN mounting hardware
DIN rail mount
(not including the rail)

Electrical SpecificationsDC-DC 5A converter

  5 Amp version

Variable Output voltage

1.2VDC to 33V, continuously adjustable, (input voltage must be at least 0.6V higher than input voltage)

Most popular output voltages

1.5V, 3V, 3.6V, 4V, 4.8V, 5V, 6V, 7.2V, 8V, 9V, 10V, 12V, 14.4V, 16V, 19V, 20V, 22V, 24V VDC output. Output must be at least 0.6V lower than the input voltage

As shipped voltage

Unless otherwise specified the unit will ship with a random voltage of less than 10V

Maximum steady state input voltage range

3.4VDC to 34 VDC

Nominal continuous output current when input voltage is between 1.5VDC and 34VDC

5A, 8A for 3 minutes maximum, 10 amps for 20 seconds

Maximum output power

For output voltages higher than 16V please limit the output power to less than 75 watts

No-load quiescent current


Short circuit protection

12 Amps, automatic recovery

Switching frequency

200 kHz ±20 kHz

Reverse polarity protection

NOT reverse polarity protected on the input

Load regulation

± 0.8%

Line regulation

± 0.8%

Maximum switching noise level

90mV p-p

Maximum storage temperature range

-40°C to 90°C (- 40°F to 194°F)

Maximum operating temperature range 

-40°C to 75°C (-40°F to 167°F)


Up to 96%


2.4 oz, 68g


86x39x23mm (3.4x1.5x0.9 inches) including flange

Mounting holes

2 x 2.7mm, 2x 0.11 inches (7/64 inch), 78mm center-to-center (3 inches)


Non-isolated buck converter


Flying leads 15cm, 6 inches long,
  Input red Positive +
  Input black, Negative –

 Output yellow Positive +
 Output Black Negative –

IP Rating

IP69, suitable for outdoor use if the wires are properly terminated


Common ground, the negative input is tied to the negative output. The frame is isolated.


Over temperature protection

If an extreme over temperature condition occurs the unit will shut down until the temperature is reduced.

Reverse polarity protection

Not reverse polarity protected

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.

Variable buck converter

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PowerStream Technology
1163 South 1680 West
Orem, Utah 84058

Phone: 801-764-9060
Fax: 801-764-9061

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