Operating Frequency :

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I am using TOP264VG in once of My SMPS Design, but unfortunately I am not able to Get 132 KHz Switching Frequency even if the F Pin is Connected to Source / Power Ground. Can anybody inform me on what could be the Problem ?

There are several factors that can cause your design to have a frequency less than 132kHz, can you please provide more information such as the schematic and output specifications?