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increase USB charger current Answered

Hi folks, 

I have built myself a DIY mintyboost USB charger.

I am using a 3.7v 4000mah battery 
Lipo charge controller 
Dc/Dc 3v to 5v 1am boost circuit 

I am looking for ways to increase my charging rate, my phone will often display a charging light when it is actually discharging. 
I have used several diodes between the components 1n5817 diode (lowest voltage drop i could find)

Would installing a transister be able to boost my mA? if so what one.

I use my charger for my android, go pro and other 3.7v battery devices.
thanks!

Discussions

0
steveastrouk
steveastrouk

6 years ago

If you're using the mintyboost circuit, the regulator is the limiting factor. The LT1302 is only rated to 600mA. You can always redesign it around another switching chip.

0
frollard
frollard

Answer 6 years ago

and remember to add resistors on the data pins to tell the device how much current it is allowed to draw.