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What is the equation for the LM259x AC losses during switch turn-on and turn-off?

April 26, 2017AC equation losses Switch turn-off turn-on

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What is the equation for the LM259x AC losses during switch turn-on and turn-off?

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AC (switching) losses depend on the transistor switch transition times, and the currents and voltages being switched. Power dissipation while the switch turns on is: Pdac(on)= ton x (Ipk- Ipp) x f x Vin. Power dissipation while the switch turns off is: Pdac(off)= toff x Vin x f x Ipk. In these equations, f is the frequency, Ipk is the switch peak current, Ipp is the peak to peak ripple, ton (the switch turn on time) = 20ns, and toff (the switch turn off time) = 30ns.