Tool/software:
Hi Team,
I would like to confirm the ILIM feature. In datasheet, it says the the ILIM mean the "average" inductor current limit.
If we are operating in buck mode which means that inductor current should be the same as Iout if we ignore the inductor ripple.
So can I say that the IAVG_LIMIT in buck mode here is Iout_avg? We don't need to care about the I_inductor peak for the ILIM, correct?
Regards,
Roy
Hi Roy,
Thank you for reaching out.
1. In buck mode, average inductor current equals to output current, so output current will nor exceed the average inductor current limit value. Meanwhile, there is still output current limit function. Please refer to chapter 7.3.12. Output current limit value equals to 50mV/Rsns. If Rsns equals to 10ohom, then output current limit value equals to 50m/10m=5A. The average inductor current limit and output current limit are 'OR' relationship. So I think we cannot simply say that ' IAVG_LIMIT in buck mode here is Iout_avg'.
2. There is still peak current limit. In some transient occasions, peak current limit will possibly triggered. So we also need to consider it.
Regards,
Mulin
