We designed a demo using TPS23731. During debugging, we found that the output of the transformer secondary could not be stabilized at a fixed 12V voltage and would decrease with the increase of current.
And the power is lower than our design, we expect to up to 25W,but current power is much less than 25W,what may be the reason for this?
Here's our schematic:
This is the change curve of the current and voltage output of the transformer secondary that we used for electronic load testing:
In addition, due to procurement issues, we used a new transformer instead of the recommended transformer model in the specification, and this is its specification:
