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BQ500210 operation at 12V

Lee Coppins-Brown
Prodigy 110 points
Other Parts Discussed in Thread: BQ51013, BQ500210, BQ500211, BQ500410A

 Hi

We are completing development of a portable battery powered product  which incorporates a BQ51013 receiver. 

We are now starting the wireless transmitter half and have a draft BQ500210 design based on the BQ500210 EVM.

However, the hope was to adapt this to run at 12V rather than 19V, following Apps Notes such as SLUA635A.

I am now not sure if this is as straightforward as I anticipated.  Are there any other Apps Notes or Reference Designs to help us with this?

Or would we be better off changing to a BQ500211 design, say, and running from 5V (using a 12V to 5V Buck)

 Lee

  • 0
    TI__Guru 69186 points

    I would recommend the bq500410A (12V) configured as a Single coil, data sheet figure 6.

    The bq500410A can be configured with 1, 2 or 3 coils.

     The bq500210 power section is designed to operate at 19V +/-1V.  Conversion to 12V may be possible but there is some risk.