12v 3Amps power supply design
Posted by: ikuks
on
Hi there,
I am planning to design 12v 3amps power adapter, can I use TNY268 OR TNY290? Please provide me some application notes.
Supply voltage is 110vac - 230vac.
Thank you.
Hi there,
I am planning to design 12v 3amps power adapter, can I use TNY268 OR TNY290? Please provide me some application notes.
Supply voltage is 110vac - 230vac.
Thank you.
© 2024 Power Integrations. All Rights Reserved
Hi,
Based on your specification the output power is 36W. TNY268 is not applicable for your application since this has only 10W power capability in a typical non-ventilated enclosed adapter measured at 50 °C ambient. You cannot use TNY290 as well because it only has 20W power capability considering your input specs and application (adapter). I would suggest that you use TOP256EN/YN/EG for this application since this has a power capability of 40W. For some design example you may refer below link:
https://ac-dc.power.com/sites/default/files/PDFFiles/der197.pdf
For other design examples you may wish to check the following link:
https://ac-dc.power.com/products/topswitch-family/topswitch-hx/