Many MOSFETs do not specify switching losses in their data sheets. Does this imply that the losses are too low to worry about? Too high for the device to be used in a switching application? Variable between units of the same product line? Or does it imply different things with different devices?
Example without losses: http://ixdev.ixys.com/DataSheet/DS100088(IXFN360N10T).pdf Example with losses: http://www2.microsemi.com/document-portal/doc_download/8195-aptm50hm75stg-rev4-pdf