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Solar Power bank

vaibhav patel
Prodigy 30 points

I want to design a solar power bank for my final year project any one help me to suggest safety feature required and efficient design for circui

  • 0
    Genius 3295 points
    Hi vaibhav,

    Try this reference design. www.ti.com/.../TIDM-SOLARUINV. It has all the safety circuits and is very efficient. The BOM and board files are free. You can mod them however you like.

    Chuck
  • 0 in reply to Chuck Sampson
    Prodigy 30 points

    Thank you for your reply but that product is support for solar panel which have capacity of 28V and above and here in my project we need only 5 V solar panel so it will be difficult to use this product.

  • 0 in reply to vaibhav patel
    Genius 3295 points

    Would it not be a simple task to stack the outputs of 6 solar panels to get 30V? Or could you not use a 5V to 28 V DC DC converter? This is often done in the industry. In fact this is how I designed the Solar Panel Grid Tie PS for Petra Solar. You can use a synchronous buck/boost converter with greater than 95% efficiency to convert the 5V output to 28V. Or you can stack the solar panel outputs.

    Chuck

  • 0 in reply to Chuck Sampson
    Prodigy 30 points

    No i Only want maximum 5V output from My solar panel to charge Li-Ion Battery. and that stored power will charge my smartphone or ipad using usb cable that is my basic concept.

    Input from solar panel Max 5V-Store in Battery- output to smartphone or tablet

    So main three circuit will be use

    1) CHARGING CIRCUIT BUCK CONVERTER 

    2) BATTERY PROTECTION CIRCUIT

    3) BOOST CONVERTER