YL2020 Amplifier Module Review - diyAudio
Go Back   Home > Forums > Amplifiers > Class D
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th June 2015, 08:14 PM   #1
diyAudio Member
 
Join Date: Apr 2013
Default YL2020 Amplifier Module Review

Hi Guys, Does anyone know about the YL2020 mini amp module? Any experiences?
  Reply With Quote
Old 23rd June 2015, 09:00 PM   #2
diyAudio Member
 
Join Date: Oct 2013
no experience so far.
but have one right in front of me on the desk.
i try to figure out what the actual circuit is compared to the datasheet.
i'm going to solder a strip of 12 pin headers on it and build the rest of the datasheet-circuit on perfboard.
the output lc filter and the recommended snubber are not onboard.
the ic produces a voltage vreg (4V at Pin 15) which sets FAULT (pin 46), MUTE (pin 45), SD (shutdown) (pin 44) into on and off status.
there is no VREG output from the YL2020 board, but the FAULT, MUTE, SD have to be set external.
as the datasheet recommends to not leave those pins unconnected, i will get started with this amp as soon as i found a solution to get control of those pins.
the gain control pins are both connected via a 10k resistor to VREG.
i like how the R-output is close to the pin.
although the bootstrap cap of the L-output is close to the chip, the trace towards the board-output is looooooong.
.....just some observations.
  Reply With Quote
Old 25th June 2015, 03:17 PM   #3
diyAudio Member
 
Join Date: Apr 2013
Hi Buehgemeiste,

Thanks for your response. I will appreciate any info of your experience with it. I am building a mini guitar amp, I have built many lm386 mini amps but I want more headroom. I have tested the PAM8610 module and I am very disappointed with it.
  Reply With Quote
Old 14th December 2015, 11:12 AM   #4
den_hr is offline den_hr  Croatia
diyAudio Member
 
Join Date: Mar 2009
Location: Croatia
Did you get the chance to try this module (YL2020)?
Any opinions?
__________________
Hana-Lab Custom Audio Solutions
  Reply With Quote
Old 14th December 2015, 02:13 PM   #5
diyAudio Member
 
doctormord's Avatar
 
Join Date: Oct 2007
Quote:
Originally Posted by mnesarco View Post
I have tested the PAM8610 module and I am very disappointed with it.
Can you get more into detail? So what disappoints you?
  Reply With Quote
Old 18th January 2016, 10:50 AM   #6
den_hr is offline den_hr  Croatia
diyAudio Member
 
Join Date: Mar 2009
Location: Croatia
Default Anyone got his working?

Mine arrived a couple of days ago, so I tried (rather naively, I guess) to connect it as described by the usual ebay sellers - i.e. leaving FAULT, MUTE and SD unconnected.
Naturally, all I got from the speakers was rather loud buzz
(I used 12V power supply). The sound input was from my Rasberry Pi server via RCA connectors, input signal was connected/soldered to Lin, AGND and Rin...

As there are no instructions from the sellers, I managed to find some reference in one of the aliexpress sellers' description:
"Recently, customers reflect on the use of bottom-to-noise problem, the solution is to use a wire input and power turned on, can be solved. Because the scope of application of the requirements are not the same, the design time, there is no audio input to the wiring and power turned on. "

Now, for the life of me, I don't understand what this Chinglish is supposed to mean, but I guess others are having the same issues with this module

Any ideas how to make this one work?
Attached Images
File Type: jpg sku_418865_1.jpg (61.4 KB, 182 views)
__________________
Hana-Lab Custom Audio Solutions
  Reply With Quote
Old 18th January 2016, 10:29 PM   #7
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
Assuming it's like its bigger brothers...

Connect shutdown to VCC to enable.

Tie mute and fault together and connect to VCC through a 10k resistor. This way if fault is triggered it will automatically mute the amp until the fault is cleared. Alternately you can just connect mute to ground.
  Reply With Quote
Old 19th January 2016, 12:01 PM   #8
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
After looking though at a few pictures of the board more closely, it looks like there are already 10k pull-up/down resistors on the board. I also found a picture that says shutdown and mute don't need to be connected, which confirms that's.

If your board isn't working as-is then I would guess it's either a wiring problem or a faulty board.
  Reply With Quote
Old 19th January 2016, 04:20 PM   #9
den_hr is offline den_hr  Croatia
diyAudio Member
 
Join Date: Mar 2009
Location: Croatia
Quote:
Originally Posted by theAnonymous1 View Post
If your board isn't working as-is then I would guess it's either a wiring problem or a faulty board.
THX for your help: as you noticed, the pullup resistors are already there, so nothing changes with these modifications.

The buzz persists, and it's probably a grounding issue - rather noticeable...
I've used voltage divider using resistors on the input, and got rid of the buzz when no input is connected. However, as soon as I connect input (plug in RCA interconnect cable), there's loud buzz again. Hmmm, will have to check everything thoroughly and fiddle a bit more... current connections are rather messy, will have to check soldering carefully and all signal paths/wires...
__________________
Hana-Lab Custom Audio Solutions
  Reply With Quote
Old 19th January 2016, 08:46 PM   #10
diyAudio Member
 
Join Date: Oct 2013
I never finished the amp, but i remember, that the module was missing an external voltage.
You'll propably have to use an voltage regulator to set fault, mute, etc. into working states.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Class-A Amplifier Module The Saint Aussie Amplifiers 26 1st May 2015 07:19 AM
Review of Connexelectronic TA-3020 v3b audio amplifier Richie B Class D 76 6th April 2014 06:29 AM
class D amplifier module,power amplifier module sunlight009 Vendor's Bazaar 2 19th October 2011 01:02 AM
Sub Amplifier Module Manufacturers schmeet Subwoofers 6 4th October 2011 03:23 PM
Review of Connexelectronic TA-3020 v3b audio amplifier #2 Richie B Class D 0 26th April 2011 09:21 PM


New To Site? Need Help?

All times are GMT. The time now is 04:09 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright 1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki