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DP30V5A power supply module - test, opinion, applications

TechEkspert  45 14037 Cool? (+9)
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TL;DR

  • DP30V5A is a panel-type DC-DC power supply module rated at 5A, 32V, and 160W.
  • It runs from 6-40V, works in CC/CV mode, and lets you set maximum output voltage, current, and power with memory presets.
  • Compared with a 0.2% multimeter, voltage differed by ±1d and current by ±3d, which the test judged satisfactory.
  • It can modernize an existing analog linear supply or serve as a mobile source from a battery or recovered switching supply for laptops, printers, and similar loads.
  • At about $30, it is expensive enough that a complete mains-powered supply with similar parameters may be the better value.
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DP30V5A is a 5A 32V 160W panel-type power supply module. The power supply modules are available in various versions differing in the maximum voltage and output current. DP30V5A can be powered with 6-40V. The power supply can operate in CC / CV mode and it is possible to set the maximum voltage / current / power at the output. Settings memories are available. Voltage indication accuracy: + -0.5% + 1d, current indication accuracy + -0.5% and + 2d. Comparison of the power supply indications with a 0.2% multimeter showed deviations + -1d for voltage, and + -3d for current, this is a satisfactory result. The power supply shows the currently set output voltage and current at which the limitation will work, the current voltage, current and power consumed at the output, as well as the input voltage of the power supply. I had the opportunity to test the module in practice, the results can be found in the material.

The DP30V5A module costs ~ $ 30, which is a considerable amount, because at this price we can buy a complete power supply with similar parameters, adapted to mains supply and with analog regulation. Digital parameter adjustment and indication of the output power are an added value in the DP30V5A. The module can be used to modernize or expand the functionality of the existing linear power supply with analog regulation. Another application may be the use of the module as a mobile power supply, using a battery or a "recovered" switching power supply as a power supply, e.g. being a power supply for a laptop, printer, etc.



The power supply has a surprisingly small heat sink. The high efficiency of the impulse converter allows for high power operation without excessive heating of the switching elements.



The resistor used to measure the output current is located close to the input and output terminals:



The following elements are mounted on the heat sink:
J652 - MOSFET P 60V 28A 38mom,
RB085T - 60V 10A double Schottky diode.

The module for its own needs consumes about 17mA with a 30V power supply.

The shape of the voltage at the output with the parameters Uwy = 10V, Uwe = 30V and currents successively 0A, 0.5A, 1A, 2A, 3A, 4A, 5A:



This is how the efficiency of the power supply looks like with an input voltage of 30V, output voltages of 5V and 10V and an output current of 0.5A - 5A:


And efficiency at a constant output current of 1A, output voltage adjustable in the range of 1-28V, supply voltage 30V:


What do you think about this panel power supply - where can it be used?

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TechEkspert
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Comments

sylweksylwina 19 Feb 2018 20:12

Everything is great, but the price is lethal ... [Read more]

Anonymous 19 Feb 2018 21:07

I have this module :) From my observations: the encoder has a lot of resistance, maybe it is a matter of my copy. The system does not allow overloading the power source it is powered by. I had to use a... [Read more]

LA72 19 Feb 2018 21:19

It is better to add to the DPSxxxx series. I have a DPS5015 myself and so far it has been doing well. Although the fan starts to "howl" when the load exceeds 10A. [Read more]

kkknc 19 Feb 2018 21:27

I am wondering about it myself. Make a good and accurate battery charger. Or for testing relays, coils, motors etc. [Read more]

piterek-23 19 Feb 2018 22:50

DPH3205 is also quite interesting - you can read a lot about it, and the price (I think) is not too high, $ 35 with shipping. [Read more]

SylwekK 20 Feb 2018 09:12

I have had it for some time and am happy with it. I drive it with a 24V 8A transformer and it gets the full range of currents and voltages. As for the price, I have a different opinion. For PLN 120 it... [Read more]

Urgon 20 Feb 2018 09:16

AVE ... Where can I buy a 30V / 5A analog laboratory power supply for 30 bucks (around 100PLN)? At this price, there are some crap 0-15V 0.6-2A power supplies, the cheapest power supply with zero current... [Read more]

LA72 20 Feb 2018 09:20

However, remember that these prices are for the modules themselves. Add a good transformer, bridge and connectors. Well, the housing and connecting cables would also be useful. And at some point you... [Read more]

SylwekK 20 Feb 2018 09:51

The metal casing cost me PLN 20 (I designed it myself). Bridge, connectors - cheap general cargo, and I had a chance - if I bought it, it would probably cost PLN 50-100 for a toroid or an alternative in... [Read more]

GrandMasterT 20 Feb 2018 10:06

I bought myself a whole series of these power supplies out of curiosity, more or less at the time when Dave on EEVBlog was describing the 20V 2A and 30V 3A or 5A versions - the movies were probably at... [Read more]

Urgon 20 Feb 2018 10:19

AVE ... Could you please provide more details and show the pictures? [Read more]

SylwekK 20 Feb 2018 10:24

By the way, my power supply looks like this: https://obrazki.elektroda.pl/5196577700_1519118535_thumb.jpg https://obrazki.elektroda.pl/3937629100_1519118608_thumb.jpg [Read more]

GrandMasterT 20 Feb 2018 10:33

And here one of mine, still at the stage of assembly, the housing, of course, recovery from something (probably some ISDN or something like that), the transformer and the module in height come into contact: ... [Read more]

tzok 20 Feb 2018 21:03

What I miss most in these modules is the possibility of limiting the voltage setting range and limiting the power. For some time now I have been "tormenting" the author / producer about it. This would... [Read more]

LA72 20 Feb 2018 21:08

Take a look here . This is one of the people who modify the software for the DPSxxxx models. [Read more]

tzok 20 Feb 2018 21:42

I've seen it, but compared to the stock soft, this alternative is very "poor". [Read more]

reaven22 21 Feb 2018 08:42

I use such a power supply, the GOPHERT CPS3205. CC CV 0-32V 0-5A Mains power, compact housing. price 45 $ (~ 160PLN) I was also thinking about the discussed panel power supply, but with a price difference... [Read more]

tomybb 22 Feb 2018 21:13

My friends have a DPS5015, I want to use an old transformer from the 1950s 220 / 110V 5A 1100VA to drive it - how to do it? simply unwinding the secondary winding to about 40V will make me stay with only... [Read more]

kkknc 22 Feb 2018 22:18

Sell and buy the right one. [Read more]

FAQ

TL;DR: DP30V5A delivers up to 92 % efficiency [Elektroda, TechEkspert, post #17049202]; “He does what he has to do” [Elektroda, Anonymous, post #17049452] Cost ≈ $30, 0–32 V, 0–5 A. Why it matters: you can add laboratory-grade digital control to any 6–40 V source for little money.

Quick Facts

• Output range: 0–32 V, 0–5 A, 160 W max [Elektroda, TechEkspert, post #17049202] • Input range: 6–40 V DC, self-consumption 17 mA [Elektroda, TechEkspert, post #17049202] • Accuracy: ±0.5 % + 1 d (V), ±0.5 % + 2 d (A) [Elektroda, TechEkspert, post #17049202] • Peak efficiency: 92 % at 30 V in, 10 V out, 2 A [Elektroda, TechEkspert, post #17049202] • Street price: US $28–35 shipped [Elektroda, sylweksylwina, post #17049249]

What is the DP30V5A power module?

A compact buck converter panel supplying 0–32 V at up to 5 A (160 W). It shows set limits and live V-A-W readings and stores nine presets [Elektroda, TechEkspert, post #17049202]

How accurate are its voltage and current readouts?

Measured deviation was ±1 count in voltage and ±3 counts in current versus a 0.2 % meter, matching its ±0.5 % spec [Elektroda, TechEkspert, post #17049202]

Which power source works best?

Feed 6–40 V DC. Users report stable 5 A only when the source delivers ≥24 V 8 A or 400 W transformer + filter [Elektroda, Anonymous, #17049452; SylwekK, #17050147].

Do I need a large smoothing capacitor after a transformer?

No. A Graetz bridge alone suffices; the module’s input capacitors handle ripple [Elektroda, kkknc, post #17083534]

Three-step hookup from raw transformer?

  1. Connect secondary to a 10 A bridge rectifier. 2. Wire bridge DC output to DP30V5A IN terminals. 3. Add 1 A slow-blow fuse in series for safety. Done.

Can it charge batteries safely?

Yes. Constant-current/constant-voltage plus programmable OVP/OCP make it suitable for Li-ion, lead-acid, and Ni-MH packs [Elektroda, kkknc, #17049510; SylwekK, #17050147].

How does DP30V5A compare to DPS5015 or RD6006?

DPS5015 raises current to 15 A but needs a fan and costs ~US $45; RD6006 adds USB/Wi-Fi and 60 V 6 A output for ~US $60 [Elektroda, LA72, #17049488; LA72, #18433556].

What is the real total cost for a bench PSU build?

One user spent PLN 20 on a custom case and PLN 50–100 on a toroid, bringing the full build near PLN 190 (~US $50) [Elektroda, SylwekK, post #17050207]

Is firmware upgradable or modifiable?

Community firmware exists for DPS-series; similar work may reach DP30V5A, but current mods are “very poor” compared with stock [Elektroda, tzok, post #17051858]

How do I save and recall presets quickly?

Hold SET, rotate to choose S0–S9, press SET to load; M0 is live, M1–M9 are stored slots [Elektroda, tzok, post #17061436]
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