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TPS548A28EVM: Switching frequency tolerance

Wiky Liao
Intellectual 1750 points
Part Number: TPS548A28EVM

Hi Team,

We are using TPS548A28EVM and set to 800kHz FCCM mode, Vin=12V and no load here. We measure the switching frequency will be around 950kHz. However the datasheet introduce the switching frequency range will be 720kHz~880kHz, it is not matched to our test data. Could you help to explain here? Thanks.