A client of mine is running into an issue where the BQ24073 charger seems to be activating it's Short Circuit Protection due to heavy current demands at the load.
There are two loads. One is a RF device, another is a misc peripherals and an MCU.
The RF device has relatively high current demands, up to 2A spikes over a duration of half a millisecond every few milliseconds.
When the spike occurs, the voltage on the output seems to sag enough to the point that short circuit protection is activated - causing issues down the line. (eg. reseting the MCU)
The client here placed diode between the Vout (pins 10/11) and BAT (pins 2/3) to ensure the short circuit condition is never reached. They found that this solution works.
The questions here is: Which charger functions are affected? Are there better solutions to get this system working?
My best guess here is the actual charging of the battery will never be quite full (always be a diode drop from max, 4.2). I'm not 100% sure if any of the protection features would be affected.
Thank you!
