TNY268PN
Posted by: soheil_khaleghi
on
Hi dear
i have designed a power supply with TNY268pn with PIExpert software.
i followed the software schematic exactly but when i connect the very light load to the output the chip be came hot very much so i do not know why chip became hot whit out any high output current
please help me.
Hi,
There could be a number of reasons why this may happen. Based on the limited information provided it is difficult to provide a specific suggestion.
To help you further, please provide us a copy of the schematic, board layout, transformer construction details and the PIExpert file.
You may wish to check the connection of the clamp circuit used and the polarities of the components in the clamp circuit.
Regards
PI-Sarek