Dear PI support team,
we designed AC/DC with PFC using TINY724GN referencing RDR-248. (Please refer to the attached circuit diagram)
1) start-up time limitation
We found Power supply doesn't start-up when Input voltage increases DC=0V to 80V taking 0.5 second.
Is there any limitation for start-up time or possible cause ?
2) Updated line undervoltage current threshold on TinySwitch-III Family datasheet
Refer to "TinySwitch-III Family datasheet", Updated line undervoltage current threshold to 2 mA in Rev.G.on page .23.
But we found .EN/UV Pin Line Undervoltage Threshold is 25uA on page.13.
What is the meaning of different value ?
Your kind and prompt advice is appreciated.