I designed several power supply converting 49V into 12V (7A) but output tantale capacitors are destroyed after power-up, do you know what happened?
Please find the design in attachment.PDF
The tantale capacitors are TR3D157K016C0075.
Beside, after removing them (leaving 3 ceramics 22uF), the design works well : 12V not load and 11.74V at 7A. But I cannot explain why when the load is around 1 or 2A, the voltage up to 13V.
Thank you for your help