line under-voltage detect feature in LNK304

[pasaajan]

Can someone tell if line under-voltage detect feature is available in LNK304 (PI SMPS switch)

 

[Harald Kapp]

Hi,
obviously not intrinsically, but there is an under-voltage feature. From the data sheet:
BYPASS Pin Under-Voltage

The BYPASS pin under-voltage circuitry disables the power
MOSFET when the BYPASS pin voltage drops below 4.85 V.
Once the BYPASS pin voltage drops below 4.85 V, it must rise
back to 5.8 V to enable (turn-on) the power MOSFET.

So you'd have to built a line sense circuit that generates the required bypass voltage.

You may place your question also directly on the Powerint forum:
http://www.powerint.com/en/forum

Regards,
Harald