DPS3003 DIY Portable Lab Power Supply

DPS3003 DIY Power Supply Assembled 2
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About

In this post, I will show my DIY portable power supply. The PSU uses the DPS3003 module. This module is rated for voltages from 0-32V and currents from 0-3A. You can get other models with higher or lower voltage/current ratings. The input voltage, however, must be in the range of 6-40V and your maximum output voltage is limited to your input voltage. In my case, the battery provides around 16V to the input so the output voltage can’t go higher than that.

Hardware used:

Making It

Assembling the power supply is pretty straight forward. Screw the terminals into the case. Connect the positive wires to the positive terminals and the negative wires to negative terminals. Put the cover onto the case and it’s all done. To make it portable I took a quadcopter S4 LiPo battery and attached it to the PSU using some velcro. To connect the battery to the power supply I had to make an XT60 to banana plug adapter cable.
The DPS3003 DIY PSU all assembled.

Testing

Testing the maximum load using a DC electronic load.
As you can see the PSU performs to the specifications. 🙂 I also used an oscilloscope to look for any noise on the output. And well … this power supply is essentially a DC to DC converter so there was some noise on the output. It wasn’t that great or horrible. Just your average SMPS noise in the order of a few hundred millivolts. It’s more than good enough for most of the things I intend to use it for.
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