High Voltage (200-450V) DC-DC PSU Module $10 Ebay Review
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- Опубліковано 23 січ 2025
- Detailed review of a High Voltage DC-DC Boost/Step Up Converter module advertised as being able to deliver 40W output continuously.
Purchased on ebay for around $10 including shipping
Advertised as being able to deliver 70W peak and 40W continuous, however I find it will not deliver more than 20W max. I don't recommend buying this module unless you plan on powering it using 24V and you don't need more than 20W output.
Very nice review!
I’m currently working in a variable high voltage bench power supply. Actually, I’m using one of this modules as a HV power source, instead of using a heavy transformer. I can say, that the modules I own, are capable to source nicely 40W out of them, with 20Vpp of ripple, at full 100mA, and just 5uF of extra capacitance conected to the output. Not bad at all.
I can notice, that the module shown in your review is not exactly the same type that I have. Mine doesn’t have the big resistor, that gets hot in your video (big green one), it has a short jumper instead. I can also see, that mine doesn’t have the big diode in the middle of the PCB.
Here you can see an Ebay seller that has the same type that I have. Wish you had one of those to see how well perform.
This is the Ebay link with a picture of the module type I’m referring to.
rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.es%2Fulk%2Fitm%2F162083457623
A very weird thing is that at 80mA the module shown in your video, stops sourcing ripple. In mine, ripple is present always at the output. So, something might be going wrong with yours.
Hope it helps.
Keep doing those nice videos!
Forgot to mention that in mine, the input fuse is T10A, not a 3Amp.
The buyer says that it needs a 7A power supply at least, powering from 12Vdc. I believe that’s why the fuse is rated at 10A in mine.
Cheers!
Albert
Thanks, I will try order from the same shop you got your modules. I guess it makes sense they've added some kind of current limit if they experienced a lot of returns because people probably buy these to charge large capacitors for rail guns or similar and they wouldn't survive the low impedance of a large capacitor.
Hi!
Yes, it could be the reason for the current limiting thing.
You’ll love the performance of the module.
Best regards
Albert
Good review but it would have been nice to see how much current it takes from the power supply with each load to know how efficient it is.
It's a good point, my focus was mostly on whether the psu would be able to deliver what was promised in the sales specs. I'd say these are probable fairly low efficiency as they are low input/high output voltage, so I wouldn't expect anything above 50-60%
I know it's already 3 years but do you recommend anything better to convert something like 12V to 450V with better results?
Is it possible to run them parallel with maybe diode isolation?
I haven't tried it but I'd say they would probably work fine in parallel since the output voltage just drops when the module is unable to deliver anymore current and it doesn't seem to overheat or anything.
TheStuffMade thank you for the response!
Is there a link to purchase on eBay?
Good review but I'd like to know type of IC
Hi can you help me to know why my car charger BASEUS 45W, cant charge my laptop.
Input 12-24v
Output 5v-4.5A #9v-3A #12v-3A #15v-3A #20v-2.25A
But he charge my phone very fast
Hi Abdelatif, make sure you laptop supports charging via USB, not all laptops supports this.
I need to to convert 12 VDC to 285 VDC at around 0.400 amp. (400 milli amp). I am trying to charge my dead hybrid batteries. can you help with the info soon, please. thank you very much
That's 114W output, none of the modules I have tested are able to deliver this much, plus it will need to draw at least 30A from your 12V source. You could try running multiple modules in parallel using some diodes and resistors to balance them, but I can't guarantee good results.
Cheers,
Jake
@@TheStuffMade thank you for your reply. I found a way to charge with lower voltage by using a bench power supply, 11VDC at 3.2 amp.
@@bobbauvian7700 - I'm also trying to charge a hybrid vehicle traction battery, a 2008 Prius Gen2 rated at 201.6 volts DC. Have you had any success? Thanks for responding
@@3000Jeffrey yes, I disconnected all the battery cells and charge them 8 cell at a time, You can even do 1 cell at at time. I had a bench top power supply, and 16 alligator connectors. so, I charged 8 at a time. the voltage of a single cell battery of mine is 8 volts. so I set my power supply up to 8.2 and 3 amps. it charges quick so stand by the batteries, disconnect power supply and measure making sure you don't over charge. I probably could have done a better job with lower amp setting and taking my time. but I needed my car. maybe if you do all the cell at the same time you get a more uniform charge....but you make do with what you got. On my Prius I had to replace the 12V battery as well.
you may do a better job if you recondition the hybrid batteries. do your own research on how to recondition hybrid battery. I may be making a mistake but the way I understand it goes like this: using a load drain the battery cells and recharge them. I did 1 cell at a time. I used a halogen bulb (24V 150W). Bulb did not turn on bright at all but it did do a good job at draining the batteries. when you disconnect your load the voltage should go back up. I discharged to about 5.5 or 6 volt and when discounted the load, voltage went over 7 volts which is the indication of a good battery. on my battery any that did not go over 7 volts after load was discounted should have been considered bad battery cell and replaced. the battery cells towards the middle had a hard time but I kept at it recharged and discharged them multiple times and they picked up. My Car had shut down and could not drive any more. Using the method above it came Alivee, and drives up to know, though I do get a triangle, check engine lights and warning still when in traffic specially if air conditioning is on...which I can clear out by disconnecting the main cable from the 12 volt battery for 5 minutes.
I should have replaced the 6 or 7 middle battery cells at about $40 each. since I was not sure about the quality of the cells for sale I decided not to do that.
found a guy close by who would replace the bad cells and charge $600, 3 month warranty. I did not do that either.
found an outfit about 150 miles away who replaces the complete battery for $1200 with I think 2 or 3 year warranty. batteries are green color. this I will do within a couple of months.
I hope this information helps helps you.
will this work to charge 800mfd 450vdc mallory capacitors?
Yes, but you have to add a 10k/20W resistor in series to limit the current.
Hello, thanks for this review. Im planning to use it for my hv 200v battery charging from 12v source. Do you think it can be done?
Hi Bryan, I just hooked up the module with 12V input and a 5K load then set it to 200V output, no problems. So it will deliver 40mA+ at 200V with 12V input. It should work fine to charge a 200V battery, just be aware the 200V output is the lower limit for this module, but you can of course just add a resistor in series to limit the current.
Cheers,
Jake
TheStuffMade Tqvm... cheers
@@bryankok2315 - I'm also trying to charge a hybrid vehicle traction battery, a 2008 Prius Gen2 rated at 201.6 volts DC. Have you had any success? Thanks for responding
Thank you.
(308V*65mA)/(24V*1.2A)= 20.1W/28.8W=0.697 eff.! Not that impressive, but what to expect at 20kHZ? There are low voltage DC/DC converters appearing from China, that operates in the MHZ range and uses a hi Q inducter and fast caps and diode, and they peak at 92-95% eff. So let's hope they design a hi-voltage version like this. However it will need more expensive bits, so it won't be as cheap as this, but China expensive is preferable to Mouser expensive. Thanks for the review, That saved me some trouble.
Thanks, those are useful numbers. For my use I haven't been too concerned about the efficiency and 70% isn't too bad, but sure, I understand if you want to use it for anything battery powered or part of a renewable energy setup, then this converter is not a good solution.
Cheers,
Jake
No 40 Watts from a tiny transformer? Curse you Physics! :)-
Thanks for the review. I saw a similar review a while back as well. Another thing to mention is that these modules usually do not allow hook up in parallel or series.. you are stuck with having to use just one module. I'm getting to the point where I have started looking at rolling my own HV boost convertor... I have seen projects for those in the American ARRL handbooks.
Cheers,
Yeah, you are right, there is no magic, you will not get 100W from a small handful of electronics. However I would probably been satisfied with 20W if that was what it was advertised at, but they had to go 70W peak !!
Very nice
Thanks
400 VDC @ 100 mA for $10 USD? Sorry. Not credible. What would you expect this thing to do?
I would expect it to deliver the promised 40W output, otherwise they should advertise it at 20W only so people know what they are buying.
Where's the daigram