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  • Author Author: johnsocm
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BQ51050B Qi Wireless Receiver-A Qi Powered and Battery Charging Receiver NEW from TI

johnsocm

Hello World,

 

I just wanted to let you know that Rev 2 of both of my boards will be out very soon even though Rev 1 are about to be delivered and then tested. TI just came out with the BQ51050B Receiver and this allows us to have the Qi Receiver and the Li-Ion Charger in one Chip. According to TI, this allows up to a 60% less footprint! This will help costs go down significantly and this will also allow for either a smaller board, less components or BIGGER proto area.

 

I am going to integrate this new chip on both my Hot Qi Dog Cape and the Qi Lime Pi Shield. This is the device we have been all waiting for!

 

Website

http://www.ti.com/product/bq51050b

 

Datasheet/Product Brief

http://www.ti.com/lit/gpn/bq51050b

 

BQ51050B Receiver Eval Kit User Guide

http://www.ti.com/lit/ug/sluua25a/sluua25a.pdf

 

Here is a video of TI testing and showing off the new chip!

Click here

 

Enjoy!

 

Chad

  • in reply to COMPACT

    I forgot to mention that you are correct, the BATT is the OUT pins. :) That is why we need a buck boost:).

  • Hello COMPACT,

     

    I knew you were just like me and can't leave the new technology alone. :) It is too fascinating to be playing with the newest technology out there and Love it because I am constantly keeping my prototype designs open for expansion and adaptability for the new technogy. I have almost completed the new board but like you stated that isn't the scope of this competition. I will post it but there is no way to actually have the new board developed and properly tested before Nov 30:) I just know that our products have to go to this 90% efficient design instead of our 90% minus 10-20% efficient designs for the discrete chargers.

     

    The four output pins I will be tying together.

     

    I will not have a adapter input but only allow wirelesscharging or power from the battery. I am still using a buck boost to give us the 5.0V we need for these devices!

     

    You read it right!

  • Hi Chad,

    I've got a copy of both documents and the Schematic on the EVM user's guide and at a passing glance many things don't yet match up.

    Amongst the mismatches, the product brief shows the bq51050B having BATT pin. The EVM shows that it has 4 OUT pins.

     

    What I'm about to say might be wrong. but here goes anyway.

     

    I've noted that the bq51050B outputs 4.2V @1A (max) on J3 whereas on bq51013A it outputs 5V @ 1A (max)

    The output goes from Pre-Charge mode (200mA) to Fast-Charge mode (1000mA) depending upon the state of the Battery.

    Charging will terminate (i.e. Wireless power stops) when battery has reached 4.2V.

     

    I can't see any DPPM (Dynamic Power Path Management) apart from the External Adapter (Non-wireless) input.

     

    I don't know what ramifications this has to any permanently connected downstream devices.

    I'll look into this in more detail later and for the time being I'll concentrate on completing my project.

     

    Cheers

     

    Very Compact

  • in reply to COMPACT

    I've downloaded the EVM User's guide but still need the Datasheet for more information.

    I've clicked on the Request DataSheet link and am waiting for approval to receive it.

    Having the inbuilt Li-Ion charger will reduce the part count and required real estate.

  • Hello COMPACT,

     

    No I just have the information off of the website! But you can gather a lot of information and even place in in a schematic and PCB without the data sheet for now. It is the same 20QFN package and basically same layout but I will for sure wait as well for the data sheet before I order my new boards. But I am right now developing off of the eval board BQ51050BEVM-764 for a side project and to reduce the footprint and increase the Efficiency of my boards significantly! This gives me enough to work off of to be able to see what has changed and what I need to get rid of!

     

    Here is the link:

    http://www.ti.com/lit/ug/sluua25a/sluua25a.pdf

     

    Enjoy!

     

    Chad