TPS54228: Webench does not work at Vin 5V, Vout 3.3V

Hisao Uchikoshi

Genius 13820 points

Part Number: TPS54228

Hi Experts,

My customer wants to estimate the efficiency with below condition but Webench says below.

Vin ; 5V

Vout : 3.3V

Iout : 1.1A

Ta = 85 degC

We need to estimate the efficiency. What is the problem?

Regards,

Uchikoshi

+1 Ruby Li over 2 years ago

Hi Uchikoshi

Please see the info below. The maximum recommended operating duty cycle is 65%, so you may not get the design through Webench. Thanks.

Ruby

+1 Hisao Uchikoshi over 2 years ago in reply to Ruby Li

Hi Ruby,

Thank you for your confirmation. Min ON time was not on the specification but now I found the sentence.

Regards,

Uchikoshi

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