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How to select Switching Frequency for IRS2982SPBF

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vrmidhun12

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Hi

I am trying to make an SMPS using IRS2982SPBF ic. Input is 85-265Vac and output is 12V, 5A.
The datasheet only says the maximum switching frequency. It is 320kHz. It is not saying anything
about frequency selection. In some application notes they are using 40kHz and 65kHz. How can I select
the switching frequency. Someone help me please
 

In contrast to SMPS controllers that use a programmable oscillator, this device generates the switching frequency according to the parameters of the connected flyback transformer and load. The details are explained in the datasheet.
 

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