Teardown of An Isolated LED Driver

I saw an LED driver in my office and thought of opening it to see what is there inside. Mainly was used for decorative LED strip.

It take AC input an drives LED strip directly.

Teardown of An Isolated LED Driver 1
Teardown of An Isolated LED Driver 2

Basically AC input is first rectified with a bridge rectifier(MB6S) and a bulk capacitor and then fed to a PWM LED driver which gives constant current output.

Teardown of An Isolated LED Driver 3

PWM LED Driver IC used is PL3536 from PowerLink Microelectronics China.

There was no EMI filter or MOV protection of any sort. Just a Fuse wire is soldered directly on the PCB.

Typical Application circuit is as shown below:

Teardown of An Isolated LED Driver 4

Some more pictures for your reference.

  • Teardown of An Isolated LED Driver 5
  • Teardown of An Isolated LED Driver 6
  • Teardown of An Isolated LED Driver 7
  • Teardown of An Isolated LED Driver 8

I hope you found this teardown useful and learned something new!

If you have any feedback about the blog, you can share in the comments below or you can also contact me directly.

Read more interesting articles on Embedded Systems Design.


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