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DP30V5A power supply module - test, opinion, applications

TechEkspert 8766 45
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  • DP30V5A power supply module - test, opinion, applications
    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.

    DP30V5A power supply module - test, opinion, applications

    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.

    DP30V5A power supply module - test, opinion, applications

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

    DP30V5A power supply module - test, opinion, applications

    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:

    DP30V5A power supply module - test, opinion, applications DP30V5A power supply module - test, opinion, applications DP30V5A power supply module - test, opinion, applications DP30V5A power supply module - test, opinion, applications DP30V5A power supply module - test, opinion, applications DP30V5A power supply module - test, opinion, applications DP30V5A power supply module - test, opinion, applications

    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:
    DP30V5A power supply module - test, opinion, applications

    And efficiency at a constant output current of 1A, output voltage adjustable in the range of 1-28V, supply voltage 30V:
    DP30V5A power supply module - test, opinion, applications

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

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  • #2
    sylweksylwina
    Computers FAQ editor
    Everything is great, but the price is lethal ...
  • #3
    User removed account
    Level 1  
  • #4
    LA72
    Level 40  
    sylweksylwina wrote:
    Everything is great, but the price is lethal ...


    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.
  • #5
    kkknc
    Level 43  
    I am wondering about it myself. Make a good and accurate battery charger. Or for testing relays, coils, motors etc.
  • #6
    piterek-23
    Level 33  
    DPH3205 is also quite interesting - you can read a lot about it, and the price (I think) is not too high, $ 35 with shipping.
  • #7
    SylwekK
    Level 31  
    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 will be rather hard to buy something of comparable quality and possibilities. Of course, we will buy a line that will turn into a stove at 2A, but you can forget about additional useful functions, such as programming of "fuses" or a bank of presets. This module is ideal for charging virtually any type of battery. The preview of all parameters also deserves praise, the more that the indications are quite accurate and sufficient for me. You can fault the operation itself - setting the presets is a bit unintuitive, but once you do it, you can get used to it. In general, praise the Chinese for making such cool modules :)
  • #8
    Urgon
    Level 37  
    AVE ...
    TechEkspert wrote:

    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 power, and with analog regulation.

    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 regulation costs about PLN 150, the cheapest 30V / 5A power supply on ebay costs almost $ 56, or PLN 187 ...
  • #9
    LA72
    Level 40  
    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 have a cost of x2 and more.
  • #10
    SylwekK
    Level 31  
    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 the impulse form, which I ordered for my father for the same module:
    (original spelling ;-) )
    2017 Best Sale AC-DC Power Supply Module AC 100-240V to DC 24V 9A Power Supply board
    http://s.aliexpress.com/IbyINbEJ
  • #11
    GrandMasterT
    Level 24  
    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 the end of the year. At that time, there was a promotion from a Chinese and I bought the whole set a little cheaper.

    I put together 2 power supplies, one regulated to 30V 5A on the DPS 3005 and the other quite large and heavy with 2 transformers and 2 3003 modules, from which in theory I can get a symmetrical output (unfortunately, of course, each half is regulated separately).

    I use the smaller one quite a lot when starting various systems, testing equipment, etc., I also use it to drive a 24V drill and charge various batteries. It is driven from a 120VA toroidal transformer, I have added protection against overheating of the transformer and the rectifier plate (ordinary permanently disconnecting thermals), I chose the output voltage from the rectifier so that without load it is close to the maximum allowable for the module (approx. 37V), thanks to which I have lower losses on the rectifier itself.

    Overall, it works very well, I was a bit afraid that the Chinese module would explode, for example, in contact with a fairly large drill motor, but nothing like that has happened yet.
    Efficiency in average working conditions is so good that I will overheat the transformer (which I consciously gave a little too small, but it was also about weight and dimensions) than the module.

    The modules also have a memory of several settings.
    When enabled, it starts up with the last settings, but is always disabled by default. In addition, you can set some of the most frequently used presets in the menu and you can easily switch between them. The user interface itself is quite good, it is easy to change the settings during work and at the same time it is designed in such a way that you cannot easily break something - e.g. pressing the voltage regulation causes the "knob" to regulate the last digit, so even if you accidentally pressed it , it will be hard to accidentally shoot more than a few dozen mV. To adjust with greater momentum, you still need to press the encoder.

    In fact, so far, after a few months of use, I found only one drawback - poor current limit regulation at the lowest settings, type
  • #12
    Urgon
    Level 37  
    AVE ...
    SylwekK wrote:
    The metal casing cost me PLN 20 (I designed it myself).

    Could you please provide more details and show the pictures?
  • #14
    GrandMasterT
    Level 24  
    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:

    DP30V5A power supply module - test, opinion, applications
  • #15
    tzok
    Moderator of Cars
    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 be especially useful when powered by a transformer, where the open-circuit voltage is much higher than at full load. On the other hand, limiting the power would be useful in cooperation with a switched-mode power supply with a power lower than the module, so that at lower voltages it would be possible to use the full range of current regulation, and at higher currents, the range of current regulation would be gradually limited so that the power supply did not turn off due to overload .

    I have a DPS3003 (powered by 100W 32V switching power supply) and a DPS5020 (powered by 1000VA 32V toroid).
  • #16
    LA72
    Level 40  
    tzok wrote:
    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 be especially useful when powered by a transformer, where the open-circuit voltage is much higher than at full load. On the other hand, limiting the power would be useful in cooperation with a switched-mode power supply with a power lower than the module, so that at lower voltages it would be possible to use the full range of current regulation, and at higher currents, the range of current regulation would be gradually limited so that the power supply did not turn off due to overload .

    I have a DPS3003 (powered by 100W 32V switching power supply) and a DPS5020 (powered by 1000VA 32V toroid).


    Take a look here .
    This is one of the people who modify the software for the DPSxxxx models.
  • #17
    tzok
    Moderator of Cars
    I've seen it, but compared to the stock soft, this alternative is very "poor".
  • #18
    reaven22
    Level 28  
    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 of $ 10, it is not possible to sculpt the housing and charge the transformers as a power supply for the panel.

    I use 2 pcs with symmetrical power supply they work without problems.

    https://pl.aliexpress.com/item/CPS-3205-0-30V...160W-SMPS-Switchable-AC-110V/32648605972.html

    here are the tests of this power supply:
    https://www.youtube.com/watch?v=yIx_VWWgKUI

    DP30V5A power supply module - test, opinion, applications
  • #19
    tomybb
    Level 26  
    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 the 5A, unwinding the entire secondary winding and winding it with a thicker wire does not smile very much, I would have to combine the wire, maybe unwinding to 40V and winding the second one with the same wire and connecting them in parallel? It would be nice to get 10A 40V from it, what's the easiest way to do it?
  • #21
    tomybb
    Level 26  
    However, I am waiting for another proposal. He would like to use that luck, however.
  • #22
    kkknc
    Level 43  
    Unfortunately, without unrolling and re-winding it with a thicker wire, which does not smile to you, it will not be possible. It makes sense to buy power tools overseas and use them. ;)
  • #23
    barti10
    Level 15  
    Buddy tzok, I have a power supply built on a DPS module and there, in the settings under the SET button, there are exactly the limiters you are talking about: voltage, current and power and each of them can be set separately depending on the parameters of the source that we "drive" the module.
  • #24
    tomybb
    Level 26  
    kkknc wrote:
    Unfortunately, without unrolling and re-winding it with a thicker wire, which does not smile to you, it will not be possible.

    Okay, and unwrapping the secondary 40V and the same wire, connecting another 40V winding to it and connecting them in parallel?
  • #25
    kkknc
    Level 43  
    Only across bridge rectifiers. Never directly.
    But I don't see the point of this, think.
  • #26
    tomybb
    Level 26  
    So from each winding a bridge, constant voltage from the bridges connect in parallel, then the electrolyte and DPS?
  • #27
    kkknc
    Level 43  
    Just like that.
    Only if you unwind so much, and there will be a lot of it. Why not wind the whole thing with thicker wire as it should be?
  • #28
    tzok
    Moderator of Cars
    barti10 wrote:
    voltage, current and power, and each of them can be set separately depending on the parameters of the source that "drives" the module.
    Either you have a newer firmware version and it has been changed, or you are wrong about how they work.

    When it comes to OVP / OCP / OPP set yourself eg OVP to 10V and see that you can still set the output voltage eg 15V. Yes - you will not turn on the output then (and you won't know why), but you can set it (to Vcc-2V, I think).
  • #29
    SylwekK
    Level 31  
    These limiters operate in such a way that, when the set parameter (e.g. current) is obtained, the output voltage is immediately cut off.
  • #30
    tzok
    Moderator of Cars
    Exactly, it is a pity that at the same time they do not prevent the setting of a higher voltage / current.