Electronics > Beginners
Voltage dropping badly
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kjr18:
I did myself something like that, small charger, protection boost and switching circuit. Even though my coil and diode are on the small side, it can deliver about 1A for a short time (diode gets hot, very hot. I might try to overload one, just to see what pops first). Originally I made this to power some not very power hungry projects, so it won't see much action.

It looks like it's really might be a layout issue. Have you tried populating only boost part and powered it from some power supply? Just to make sure if that MT3608 is at fault here.
janoc:

--- Quote from: LukeB on November 03, 2018, 12:52:19 am ---The Modules were made myself from part from lcsc.

--- End quote ---

The chip still could have been fake.
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