Part Number: BQ24296M
Tool/software:
Hello.
Our products using BQ24296M have an issue with RF noise that significantly affects on our RF subsystem at 868/915MHz.
RF noise from BQ24296M starts when switching converter goes to continuous current mode.
It looks like synchonous switching converter does not work well.
Switcing process has a long dead time. LSFET Rds on is relatively high.
I suspect that this causes RF noise, typical for non-syncronous converters.
Design description is here e2e.ti.com/.../bq24296m-emi-issue-during-pmic-switching
The suggestions from this topic did reduce the noise by 3-5 dB, which is insufficient.
Could you please suggest how to reduce RF noise further?
