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TPS54335A working curve

Other Parts Discussed in Thread: TPS54335A

Dears,

At present, I used the TPS54335A to design a Buck Converter, Vin:12V  Vout:5V  Iout:2A.

I have tested the chip temperature at normal work(5V/2A), but the chip temperature arrived about 86℃ after work 30 minutes. The design parameters is provided according the datasheet.

Could you tell me the Load vs Temperature Curve or other suggestions for me?

Best regards!