I am creating a SMPS with a bi-polar (dual) output of say +/-15-volts.
I intend to synchronous rectify the outputs (I'm currently using the ucc28950).
I have not been able to find much information on doing this.
My general observation is that it appears as though two identical synchronously rectified secondaries are created - and then the outputs put in "serial" for a common (and +/-). So effectively one FET is in GND (positive output) and the other in -15-volts (which is GND for the negative output) .
Is anyone able to point me towards alternative solutions?
Possibly an application note shows an other method.
