Tool/software:
Hello,
We are using the BQ24610 in our design and I have three related questions about the external setting components:
- For setting a Pre-charge current, are there any guidelines about what to set this to in terms of C-rate? 10%, 20%...?
- The resistor divider at ISET2 controls the both the pre-charge and the termination charge. So if we set the Pre-charge to some high value to help get the cells up quickly, aren't we also terminating the charge cycle at some relatively high trickle charge? It seems like we can either have a) a very slow and long pre-charge, but a complete full charge, or b) a quick pre-charge, but incomplete full charge since the cycle will stop before trickle charge is really complete. Neither seems ideal.
- Considering the pre-charge time and the overall timeout configured with the cap on the TTC pin - is the pre-charge time considered part of the timeout, or does that only begin once fast charge has started? There is a fixed 30 minute timeout on the pre-charge, but it's not clear whether TTC timeout starts during this pre-charge period or not.
Thank you,
Jamie
