TOP412
What is the recommended replacement for a TOP412 that would allow the least circuitry changes?
Comments
One of my customers is using a TOP412 based power supply since the last 9 years. Now he wants to change the output specs and continue to use TOP412, since he is very much satisfied with its performance (having used it since the last 9 years). Kindly email the design excel sheet of TOP412 so that I can design the revised power supply else suggest a suitable application note of TOP412 wherein I can design a power supply
Hi,
Thanks for contacting PI.
I am glad to see that your customer is satisfied with the TOP412, however, I would really recommend you to use the newest DPA Switch for your new design. TOP412 is a product long time ago, and it may go to obsolesce status in the future. Unfortunately, the design excel design sheet of TOP412 is not available now. You could check our new design software that you can find it in the following link:
http://ac-dc.power.com/design-support/pi-expert/
It is more powerful tool, and you should be able to get your new design ready with the new DPA switch.
Hope this is helpful.

The closes possible replacement is in the TOPswitch DPA family. Keep in mind that there is not a direct replacement. The Maximum DRAIN voltages are different. The packages are different too. SO the design had to be fully reviewed to make the right selection