hi team:
My customer use UCC25600 IC for the main control solution design. Currently, the following batch differences are encountered. Please help share your inside~
Problem phenomenon: During mass production, some prototypes have a phenomenon of high no-load voltage. By swapping the main control IC UCC25600 of the prototype, the problem can be solved;
Check with CQE team , the LTC#24A0LFM and 22A8YEM wafer versions in the system, both are A.
Good one:
Bad one:
Normal waveform:
Abnormal waveform：
SCH:
The current analysis results are: the reason for the high no-load voltage is related to the sudden change of the driving frequency and duty cycle.
For the above consultation, please help confirm the differences. Thank you for your support!
