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TPS54340B-Q1: Regarding snubber values in TPS54340B-Q1 design.

Part Number: TPS54340B-Q1

Hi TI support,

Due to EMI concerns we are trying to add Rsnub=3.0E & Csnub=1100pF in TPS54340B-Q1 based design as shown in attached schematic. Place of their addition is highlighted with red line. Design details are VIN=10 to 20V, Vout=4.5V/ 2.5A, Freq=917KHz.

However, due to additions of above mentioned snubber, rise & fall time increase to 5.8ns & 20.11ns respectively which before were 2.4ns & 8.05ns respectively. Do you think these values are OK to be added or you suggest any modifications in that.

Regards,

jagdish