In a conventional diode ... forward-drop losses. This one benefit alone typically outweighs all synchronous MOSFETs’ negatives. Figure 3 shows how you can add an isolated gate-drive signal with ...

Take for example a flyback that generates two 12-V outputs at 1 A each from a 48-V input, as shown in Figure 1 ’s simplified simulation model. Ideal diode models have zero forward-voltage drop and ...

Linear Technology’s LT3809 flyback secondary-side synchronous rectifier driver replaces the output diode forward-voltage drop with the RDS(ON) of an external N-channel MOSFET, thus reducing the ...

Nps is the turns ratio of the transformer used, and Vf is the voltage drop across the secondary-side flyback diode. This is usually quite temperature dependent. For output voltages set to high values ...

Conceptually, diodes are quite simple. But, they’re extremely useful because of their V-I curve, shown in Figure 2. The X-axis is voltage ... Use #4: Flyback Diodes Flyback diodes are the ...

Zetex has announced a synchronous rectifier controller for flyback converters ... intrinsic body diode becomes forward biased to 0.6V, and turns it off again when current through the Fet drops to zero ...

By delivering performance superior to conventional switching diodes, they offer high junction temperature capability, low leakage and ultra-low forward voltage drop. Their higher junction ...