Other Parts Discussed in Thread: EV2400,
Hi,
We're using an EV2400 evaluation kit. We use a battery pack of 2 Li-SOCl2 batteries in parallel, 3.6V. Our application normally draws 30μA, up to about 90μA when idle, with higher spikes of up to 10mA during activity.
We had anticipated that the average power consumption would be less than 2μA, according to the datasheet. In fact, because this is described as the average power consumption, it implies that even though the peak consumption is higher, the idle power consumption should be even lower, in order for it to average out to <2μA. However, what we measure is that we have a power consumption of 40μA, even while we are idle (with GAUGE_ENABLE not asserted).
Now, on Page 12 of the datasheet, it does say that power consumption can change significantly based on host commands and device configuration (via data flash updates). It then references the BQ35100 Technical Reference Manual's section on Power Control. However, when we look there, it just again re-iterates that power consumption depends on host commands and device configuration, but does not seem to describe what those various configuration options are. After that, it just describes how to calculate the average power consumption of our own BQ35100 based on how often (and for how long) we would assert GAUGE_ENABLE. It claims that when the GAUGE_ENABLE pin is low, we should see power consumption from the BQ35100 in the 10s of nA. So we're still a bit confused as to why we're seeing such high power consumption even when our GAUGE_ENABLE pin is low.
We'd appreciate any advice or tips on how we can investigate what we're doing wrong, and how to rectify it.
Thanks!
Regards,
Yu Fei
