UCC27624: Using UCC27624 drive transformer,and 0.1A electronic load is loaded on the secondary side, and the heating UCC27624 is serious and soon reaches more than 100 °C

Tool/software:

Hi team,

We are Using UCC27624 drive transformer, the ratio of the primary and secondary turns of the transformer is 1:2, and 0.1A electronic load is loaded on the secondary side, and the heating UCC27624 is serious and soon reaches more than 100 °C

White is the unloaded OUTA output waveform, and green is after 0.1A load

My questions :Is it normal to heat up after adding 0.1A load, the specification is the ability to ± 5A, and the second is how to keep the output voltage of OutA constant after loading?

Thankyou

UCC27624: 使用UCC27624驱动变压器，变压器原副边匝比为1:2，在副边加载0.1A负载，UCC27624发热严重很快达到100℃以上 - 电源管理论坛 - 电源管理 - E2E 设计支持 (ti.com)