PMP9068: Can this be changed to a 5V Output?

Patrick,

Yes, it can, but it will require a new transformer and other components changes.

Are you going to use the secondary side regulation or primary side regulation?  PSR requires a transformer with good coupling between the bias and secondary windings.

For SSR, PMP11271 is a similar design with a 5V output.

https://www.ti.com/tool/PMP11271?keyMatch=&tisearch=search-everything&usecase=refdesign

We also have the TPS23758 with PSR and integrated primary side FET.

https://www.ti.com/product/TPS23758?keyMatch=TPS23758&tisearch=search-everything&usecase=GPN

Thanks,

David

Thank you for your response.  I had planned to do secondary side regulation. 

 I had not seen the PMP11271, so will look at it.

How can I reduce the output ripple on this TPS23753A designs?  The documentation for the PMP11271 is showing a ripple of  38.7mV.  I have the TPS23753AEVM-001, and can see similar (possibly higher) values. 

Additionally in the TPS23753AEVM, I see a spike of what I’m assuming is the switching of the Q1 mosfet in the output waveform that is quite a bit larger as it repeats at 250khz.  How can I tamp this down?

 Thank you!