Wide range power supply design

Hi,

I am afraid of using series pass regulator for such a wide input voltage range. Series pass transistor will have to dissipate huge amount of power in order to deliver the required output power.

May I know for which application you want design this power supply?

We have a design example with an input voltage range of 57V AC to 580V AC with StackFET configuration. In this design example Linkswitch-TN has been used, since Linkswitch requires very minimal external components.

http://www.powerint.com/sites/default/files/PDFFiles/di124.pdf

If the minimum input voltage is not that critical, you can use this design example if it meets your output voltage and current requirements. If the minimum input voltage is a critical parameter, then I would recommend to use TOPSwitch-HX or TOPSwitch-JX family devices for this wide input voltage range. However using StackFET configuration for higher output power levels is not recommended, because of poor efficiency.

Regards,

PI-NANO

Hi,

If I want to use design as per di124, How do I make output current as 1Amp?

If it provides 1Amp at 12V, My design can go fo rvolumes now...

Right now I am using TNY278PG, 12V and 1Amp, but it is only for 265VAC Max...

SR

Hi,

You can still design with TNY278 for wide range by using StackFET configuration approach as shown in DI124.

If you need any design help please contact any of our field application engineers in your geographical region. They will be able to you with the design.

Please find our sales locations at the following link

http://www.powerint.com/en/company/sales-information/worldwide-sales-support-locations

Regards,
PI-NANO