BQ76PL455A: Multidrop Comms Scheme instead of Daisychain

Carlos Ramos21

Part Number: BQ76PL455A

Hello,

I am designing a BMS for a battery pack application and I would like to know if the BQ76PL455A is capable of creating such communication scheme. I would like to use for each BQ76PL455A, a microcontroller that controls and communicates with each BQ76PL455A independently. These micros are going to be connected to a CAN bus. I've done the same with the BQ76PL436A and it works perfectly. Would like to know if this can be done with the BQ76PL455A.

Much appreciated,

Carlos Ramos

over 7 years ago

0 Roger Hwang over 7 years ago

TI__Genius 10785 points

Yes, it can be done just like PL536A.

0 Carlos Ramos21 over 7 years ago in reply to Roger Hwang

Prodigy 240 points

Another question,

Is there a way to test any number of cells (6 <= #cells <= 16) using the EVM BQ55A? If so, what should I do to test this scheme?

Thanks for the first reply BTW!

0 Roger Hwang over 7 years ago in reply to Carlos Ramos21

TI__Genius 10785 points

Yes, Vmin is what it matters. as long as you apply more than 12V then you should be okay,

The concept is same as PL536A. Let's say you have 6S solution then you connect Vsense6 to Vsense 7, Vsense8 and etc... to top.

You can find it in the datasheet as well.

Power management

Power management forum

BQ76PL455A: Multidrop Comms Scheme instead of Daisychain