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Boost converter? Answered

How to make boost converter that will convert 3.8 volts to 5 volts for my android????

16 Replies

user
iceng (author)2016-02-15

Is the yellow area where you want to put the boost converter ?

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user
PavleP (author)iceng2016-02-17

I need it because I want to power OTG devices when I connect them and I need 5 volts for that.

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iceng (author)PavleP2016-02-17

I understand you need 5 volts.

Where do you believe there is room for a mini boost parts....

Consider that the through hole parts can be reduced by 1/3 by using SMD parts and the electrolytic capacitors can be reduced 1/3 size if you use tantalum smd.

So where is there room for these parts.

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user
PavleP (author)iceng2016-02-16

No,yellow area is place for battery.

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user
iceng (author)PavleP2016-02-16

Would you like to have me keep on guessing ?

Or do you have an area that is suitable for a booster ?

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-max- (author)2016-02-16

Buck and boost converters take a good amount of space. You need a thick PCB to mount all the parts, a chunky inductor, some capacitors, diodes, maybe resistors, the converter chip itself, all that together will simply take too much space. There almost isn't even enough room in a modern phone to stick even a paper thin (literally!) business card! Let alone another PCB... Unless you get a smaller battery and create a little space in the phone.

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-max- (author)2016-02-16

There are these things called OTG cables, often sold with a small microUSB type B on one end, big female USB on the other (the kind that stuff plugs into.) Almost all modern phones, even old ones already have a built in boost converter for USB master support. (So that you can connect external devices to your phone, like flash drives and the such.)

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-max- (author)2016-02-16

Why? What for? Where? Current requirements? Noise level requirements?

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user
PavleP (author)2016-02-15
user
Yonatan24 (author)PavleP2016-02-15

Why did you take apart your phone?

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user
PavleP (author)Yonatan242016-02-15

To see where can I put converter.

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user
PavleP (author)2016-02-15

What do I need to make boost converter that will be inside my android????

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PavleP (author)2016-02-15

I want to put converter inside my android.

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iceng (author)PavleP2016-02-15

I doubt there is any room inside even for three grains of sand !

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iceng (author)2016-02-14

Here is an excellent ible about how to build just such a converter

https://www.instructables.com/id/MintyBoost!---Smal...

Or if you don't want to do the tin foil part

https://www.instructables.com/id/MintyBoost!-Kit-V1...

A....

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steveastrouk (author)2016-02-14