Comments on: Small switch mode PSU module MPS MP2307 fail

By: Tomi Engdahl

Tomi Engdahl — Mon, 11 Sep 2023 13:11:41 +0000

With Just $0.50 Components I turned Garbage Products into GOLD!
https://www.youtube.com/watch?v=6bicunweBAQ

0:00 The Problem of my AliExpress Products
1:16 Intro
2:04 Why is Noise/Ripple Bad?
3:39 How to Measure Noise Correctly
4:32 5V UPS Noise Problem
5:46 Solution 1: Post Regulation
7:51 Solution 2: Component Improvement
8:39 Capacitor Replacement
9:55 Other Component Problems
10:49 Mini Boost Converter Fix

By: Stephen

Stephen — Fri, 12 Feb 2021 08:15:37 +0000

thanks, God Abbah YHWH bless you

By: Dale Schultz

Dale Schultz — Sat, 13 Jul 2019 02:18:11 +0000

I have also been finding terrible quality control on the MP2307 modules from China. Some drawing 34mA or even 43Ma with no load and getting very hot. Best result is one that draws 15mA by itself!

I was using them for lighting inside model train passenger cars, so the small size was very attractive.

By: Cris

Cris — Fri, 15 Feb 2019 19:49:16 +0000

… I changed the coil, and nothing is changed… With the osciloscope, I saw the line at the exit… was not the line. About 1V ripple, at 5V Vout. I put one 10uF ceramic smd above the one at the pcb, at exit, and….. the idle current dropped from 50 mA to 11 mA, the out line is next to flat, the heat is minimum. In the datasheet, it is required 2X22uF at Vout. And the board is fine.

By: Cris

Cris — Fri, 15 Feb 2019 19:10:48 +0000

Hi, I had the same problem. Much heat, hi current in idle state… But when I receive another lot, I have the surprise to find that all was ok, current in idle is 7-9 mA, not heat at all. Sorry I can not put some photo. The inductor in the new lot are different, they are clear marked “100″ (10uH). The old, which are heating, are unmarked. I think that when the inductors are bad, all will go wrong. I will change the inductors at the wrong ones.

By: Jens

Jens — Sat, 09 Dec 2017 15:25:02 +0000

I just binned a dozen of them with the same issues (output coil getting hot and high current consumption even under no load conditions). Plus some boards had manufacturing defects. Make sure you test these before putting them into use!

By: Tomi Engdahl

Tomi Engdahl — Sun, 18 Jun 2017 22:20:02 +0000

The same switch mode power supply IC was used also in this module (and it works well):
Power supply module tested
http://www.epanorama.net/newepa/2016/04/11/power-supply-module-tested/

By: Kiki

Kiki — Sat, 17 Jun 2017 11:50:41 +0000

great
https://www.wikipedia.org/