Author Topic: RD DPS5015 (50V/15A ) and DPS5020 (50v/20A) digital power supply rippple test  (Read 3510 times)

0 Members and 1 Guest are viewing this topic.

Offline RD Tech

  • Regular Contributor
  • *
  • Posts: 87
  • Country: cn
This is ripple test for DPS5015 . 

https://www.youtube.com/watch?v=QbcLtOT1IAQ&feature=youtu.be

Product page: https://www.aliexpress.com/item/RD-DPS5015-Constant-Voltage-current-Step-down-Programmable-digital-Power-Supply-buck-Voltage-converter-color-LCD/32702714880.html
upper competer page: https://www.mediafire.com/folder/3iogirsx1s0vp/DPS_communication_upper_computer

The required instruments and requirements for test :
Oscilloscope ? Probe *1, IT6721 power supply 58V +, 20M bandwidth limitation.
Oscilloscope Vertical resolution 50mV , Controling DPS5015 by the upper computer.


we are *1 probe test , VPP is about 100mV,
we also use *10 proble to test , but *10 Probe can cause extra interference to make measurement VPP higher .

we also make ripple test for DPS5020.
DPS5020 page : https://www.aliexpress.com/store/product/RD-DPS5020-Constant-Voltage-current-Step-down-communication-digital-Power-Supply-buck-Voltage-converter-LCD-voltmeter/923042_32821185351.html?spm=2114.10010108.1000023.29.Up1mtg
« Last Edit: August 01, 2017, 05:32:48 pm by RD Tech »
 

Offline floobydust

  • Super Contributor
  • ***
  • Posts: 1436
  • Country: ca
Re: RD DPS5015 digital power supply rippple test 50v15A
« Reply #1 on: August 01, 2017, 02:56:39 am »
That is pretty quiet  :)  No extra output filter needed. Nice.
I see 50mVpp no-load and 75mVpp at 3-10A, and 100mVpp at 15A, f=90kHz (I believe but not sure).

Ordered a DPS3005 (30V 5A) and look forward to trying it out.

The communication -C option with USB and Bluetooth boards looks very good. I should have ordered it.
It might be possible to make voltage waveforms, ramp,  pulse with the PC software?


 
The following users thanked this post: RD Tech

Offline alm

  • Super Contributor
  • ***
  • Posts: 1170
  • Country: 00
Re: RD DPS5015 digital power supply rippple test 50v15A
« Reply #2 on: August 01, 2017, 03:55:21 am »
Your links do not work: the part after the ellipsis (...) is missing.
 
The following users thanked this post: RD Tech

Offline floobydust

  • Super Contributor
  • ***
  • Posts: 1436
  • Country: ca
Re: RD DPS5015 digital power supply rippple test 50v15A
« Reply #3 on: August 01, 2017, 03:59:35 am »
Mods, suggest merging this thread with this one about the DPS5015:
https://www.eevblog.com/forum/testgear/testreview-of-power-supply-frontend-dps5015-50v15a/
 
The following users thanked this post: RD Tech

Offline RD Tech

  • Regular Contributor
  • *
  • Posts: 87
  • Country: cn
Re: RD DPS5015 digital power supply rippple test 50v15A
« Reply #4 on: August 01, 2017, 05:23:10 pm »
That is pretty quiet  :)  No extra output filter needed. Nice.
I see 50mVpp no-load and 75mVpp at 3-10A, and 100mVpp at 15A, f=90kHz (I believe but not sure).

Ordered a DPS3005 (30V 5A) and look forward to trying it out.

The communication -C option with USB and Bluetooth boards looks very good. I should have ordered it.
It might be possible to make voltage waveforms, ramp,  pulse with the PC software?
the result will be different for different test device.
did you buy communication version? if yes, you can show your test result
about the voltage wave , I don't know what you want to do. you can try
 

Offline RD Tech

  • Regular Contributor
  • *
  • Posts: 87
  • Country: cn
Re: RD DPS5015 digital power supply rippple test 50v15A
« Reply #5 on: August 01, 2017, 05:29:21 pm »
sorry, it is some mistakes, I fixed it , you can check it again
 

Offline RD Tech

  • Regular Contributor
  • *
  • Posts: 87
  • Country: cn
Re: RD DPS5015 digital power supply rippple test 50v15A
« Reply #6 on: August 01, 2017, 05:31:09 pm »
Mods, suggest merging this thread with this one about the DPS5015:
https://www.eevblog.com/forum/testgear/testreview-of-power-supply-frontend-dps5015-50v15a/
yes, this is our friends test too
because many friend need ripple test , but we don't have much time ,. so we only a video for riplle
it should be very clear
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf