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Getting a Boost converter to safely power a project North St
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Getting a Boost converter to safely power a project North St

by nickybee123 on Mon Aug 12, 2019 8:05 pm

I've been playing with a project North Star display board - and while it has slightly higher demands than the official USB spec of 5V - I was hoping that the PowerBoost 1000 (at 5.25V and up to 1A) would be enough.

and it was ;)

Essentially I needed 5.2V and 850mA so the Powerboost 1000 did a great job of powering my device.

However then I decided to boost the brightness - which worked perfectly on the regulated DC power supply (the voltage min. demand seemed to increase to 5.6V and the current draw doubled to 1.56-1.6A approximately. (It seems to happily take 6V also)

So now I have a dilemma - I would like to construct a circuit which can supply this - and even if I add two powerboosts in parallel - it won't be enough.

There are some Boost converters - e.g. https://www.amazon.com/Converter-Voltag ... B06XWSV89D but I worry about their stability going from 3.7V on the Adafruit battery packs)

Anyone got any ideas for a stable way to get 5.6-6V but be able to continuously feed over an amp?

nickybee123
 
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Re: Getting a Boost converter to safely power a project Nort

by franklin97355 on Mon Aug 12, 2019 10:00 pm

Pololu has some that might work. https://www.pololu.com/category/132/step-up-voltage-regulators Make sure your battery can handle the increased demand.

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Re: Getting a Boost converter to safely power a project Nort

by nickybee123 on Tue Aug 13, 2019 2:18 am

Thanks for that - I'm gonna test of the Polulu ones - as for the battery discharge - I have some of these https://www.adafruit.com/product/353 lying around

They can easily handle the load - except in this case it would be sustained...

i need 1.5A max - your docs do not recommend exceeding 1.3A - it's kinda/sorta close...

Any suggestion of a LiPo setup which can handle delivering 1.5A or more

nickybee123
 
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Please be positive and constructive with your questions and comments.