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LMR36015-Q1: Request for estimation of Power dissipation

Part Number: LMR36015-Q1

Hi team,

My customer would like to know power dissipation of LMR36015AQRNXRQ1 with below condition.

Could you support this request?

- Vin : 15Vmin to 58Vmax

- Vout : 12V

- Iout : 0.4A

- Fsw = 400kHz

- L = 140uH

I tired to estimate with Webench power designer, but output and Fsw are fixed to 3.3V and 2.2MHz.

Best regards,