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Step 7Schematics, Power Specs, other things for designers
Graphs, pretty pictures and schematics are here for designers who want to improve our idea.
I included a schematic of the first boost converter design MAX856. It was good for a LED flashlight or charging a super cap but not powerful enough to charge an iPod.
I am not going to specify the parts we used since we don't plan to continue using it.
We are looking towards using the MAX1522-MAX1524 from Maxim IC but it will take time to source new parts and we don't want to give out an untested schematic. Any recommendations for a good efficiency boost with a 0.8V to 5V input range? Needs to be over 85% efficient for a 500mA output.
I included a schematic of the first boost converter design MAX856. It was good for a LED flashlight or charging a super cap but not powerful enough to charge an iPod.
I am not going to specify the parts we used since we don't plan to continue using it.
We are looking towards using the MAX1522-MAX1524 from Maxim IC but it will take time to source new parts and we don't want to give out an untested schematic. Any recommendations for a good efficiency boost with a 0.8V to 5V input range? Needs to be over 85% efficient for a 500mA output.
MAX856-MAX859.pdf(612x792) 812 KB| « Previous Step | Download PDFView All Steps | Next Step » |
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Jan 24, 2011. 12:22 PMavanner77
says:
In her Mintyboost, Ladyada uses the LT1302 to power any USB device. After looking at the efficiency graphs, it appears to be almost 85% efficiency at 500ma. Hope this helps.
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