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TPS56837: TPS56837

Part Number: TPS56837

Tool/software:

Hello,

I am designing a buck around the TPS56837.  The voltage out (VDL+) can change depending on the voltage applied to CVD (3V to 12V for 15V Vsupply, see sch)

My question is: is it possible to reduce the transients seen on the AC ripple (about 200mV Pk/Pk) ? and what could be the cause ? this taken at VDL+

I've attached the SMPSU schematic and waveforms

Thank you,