Is there an alternate pin compatible to that TOP247YN (Not Recommended For New Designs)
TOPSwitch-JX has similar functionality with GX, but it is not pin-compatible. A transformer designed for use with GX should work with JX as long as the operating frequency is the same. However, the layout will need alteration going from GX to JX because of the different pinout.
Before making the transition from GX to JX, it is a good idea to run your original design parameters (input voltage, output voltage & power, bulk capacitor value, operating frequency) in PI-XLS, with your current transformer parameters (core type, inductance, turns) locked in place in order to determine the appropriate replacement part. Some adjustment of the current limit programming resistor may be necessary.
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