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LM5026 Evaluation Board schematic

Loc Nguyen Huu
Prodigy 180 points
Other Parts Discussed in Thread: LM5026

Hello Member,

I have re-designed LM5026 Evaluation Board for 5V output/10A, input 25VDC to 36VDC as schematic in the datasheet. I changed resistor value to create 5V output such as R8 to 4.99k, R26 to 45.3K and R27 to 14.7K. All other components are unchanged. Our board is applied 30V input and outputs about 5V but Q2 (ZVP2120GTA) blow out in a few second. Please let me know why and which parts I could change to fix the problem.

Thanks and best regards.

Loc