HI,
The query is related to DC-DC PSFB full bridge converter. We are facing some MOSFET device failing issue during minimum load condition. We observed the device is failing due to over temperature. I have attached the testing observation. If required any additional input, Please let me know.
Design Specification:
| Output Power | 2000 | W |
| Vin Nom | 390 | V |
| Maximum Output Voltage | 55 | V |
| Ouput Current | 36 | A |
| Switching Frequency | 230 | KHz |
Transformer Details:
Turns Ratio : 4.1
Primary Turns: 12
Secondary Turns: 3
Primary inductance: 1052 Micro henry
Leakage inductance: 2.6 micro henry
Primary MOSFET Part No: IPP65R190CFD
DELAB = 440nS
DELCD = 440nS
Thanks & Regards
Parthipan R
