Today, I did a teardown of Wipro 9W Smart LED Bulb which has Wi-Fi connectivity for dimming and color controlĀ and wanted to share all the images I took which reveals a lot about interesting details , how the smart bulb was designed.
I did not use the bulb that much, I was more curious of what is inside
It is always great to see how different companies are designing products, their choice of microcontrollers, ICs and the over all construction.
You learn a lot by looking at someone else design, you get to know their perspective.
Here you go.
Various ICs used in the LED Bulb are:
MB10F: Bridge Rectifier Diode
BP1638: 3-channel PWM dimmable Linear constant current LED driver
BP2513D: Non-isolated CCCV driver IC
BP2306: Dimmable Non-isolated APFC Buck LED Driver
BP8516: Not able to find the datasheet.
BP5926: PWM LED Driver
WB3L: Tuya Wi-Fi Module (using BEKEN BK7231)
To be honest I think this design is quite complicated especially from Power side.
I did see Halonix LED bulb also, it doesn’t have 5 ICs but only two. teardown of that in a future blog š
Hope you have enjoyed the teardown pictures and learned something new.
If you have any further question you ask in the comments section, I will try to respond as soon as possible.
I am currently working as an embedded systems design consultant and helping companies build custom embedded products, develop test automation solution for their PCB.
If you have any feedback about the blog, you can share in the comments below or you can also contact me directly.
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Nice!.this is exactly the same as one avita bulb. Can we get the schematic of the led pcb?
I am not sure about Avita Bulb, never heard of. No, I don’t have a schematic of LED bulb.
ok. no worries.! its cool you took time to look into this.!
btw, the link for the controller board actually takes to another board and not
“https://developer.tuya.com/en/docs/iot/wb3l-module-datasheet?id=K9duiggw2v8sp”
the above one is the working link for WB3L
in my wipro 9watt smart bulb IC ā BP8516 4th pin gone how can i repair it, as per your post data sheet not available and i also check in internet its also not available anywhere. please help me
U4 ic details plz
Hi Nice work @Pallav.. somedays before I had doing the same work on Tapo-smart bulb. seeing your picture its looks same in inside but controller is Realtek – https://pdf1.alldatasheet.com/datasheet-pdf/view/458190/EON/EN25QH16-104HIP.html. Yes power supply part is looking complicated even for me pretesting on SOC is also tough.
Thanks for taking time to go through. Glad you found it interesting.