"I designed a bidirectional buck-boost circuit combining 1EDI20N12AF and IGT60R070D1 based on their datasheets. However, there are some issues with the drive waveforms. The peak of the upper switch(Q20)'s drive waveform increases with the voltage, and after reaching a certain point, it exceeds 6V. Additionally, there is a severe resonance issue in the latter half of the negative voltage waveform. What is the cause of this, and how can it be resolved? I have tried replacing R162, R165, C88, and R168 with different parameters, but the issue still persists.It seems that this issue is causing all IGT60R070D1 devices to fail simultaneously when I apply high voltage input.

these are the sch and waveform.Hope you all can provide answers to the above. Thank you.

Hello

EVAL_2500W_PFC_GAN_A
The initial setting of the output voltage is 390V, but plan to use it at 380V.
Could you tell me how to change parts?
(Please let me know the number/value to be changed in the circuit diagram below)

Best regartds,

Hi, not sure if this is the correct forum for this question. The product is from GaN Systems, who I understood was recently acquired by Infineon. I previously raised a ticket on GaN Systems but to no avail, so thought that I try asking here. 

I understand that the GS61008T (https://gansystems.com/gan-transistors/gs61008t/) is top-cooled. However, wonder if the thermal resistance value for junction-to-board (Theta_JB) is available? 

Thanks 

As it is mentioned in the product status "on request" for the EVAL_3K6W_LLC_GAN(UG_201702_PL52_013). So I want to know the lead time of the product and the contact window to place the order.