Hi all,
I am designing a product that will be powered off of a small (~60 W) ~12 V DC adapter. This product will also contain a 3s Li-ion battery. Many parts of this product will be low power and can run continuously off the adapter. But there will also be low duty cycle high power consumers, like motors, that will require up to 60 W on their own. In this case I hope to supplement power from a high discharge Li-ion battery. When these low duty cycle portions are off, the battery would be slowly charged by the adapter. I have spent some time looking for good solutions for a complete battery management, protection, and charge solution. There are so many options, and it is a little overwhelming to determine which product(s) are best suited for my application.
I have looked at the bq40z60 and it looks promising, but I also see a lot of documents mentioning the bq76920 + bq78350 + (some charger). What is the advantages and disadvantages of these two systems? Are there other solutions that are common that I have missed?
I also know that I will need some sort of power path solution whether I just implement some ideal diodes or find a solution that lets me supplement the system power like I want automatically.
Thank you in advance for any guidance or clarification you can give.
Chris Jones