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WEBENCH® Tools/LM5176-Q1: Using lm5176 to design the power input port of vehicle computing platform

user6318457
Prodigy 10 points
Part Number: LM5176-Q1
Other Parts Discussed in Thread: LM5176

Tool/software: WEBENCH® Design Tools

Using lm5176 to design the power input port of vehicle computing platform。

use WEBENCH® POWER DESIGNER  ，

Input: 
DC 9 V - 36 V
Output: 
12 V at 20 A
Temp: 
30 °C
 

 but 

Design cannot be created!

Your preferred device does not work with the inputs you selected.

OpVal table param temperature > 150°C

Please change your inputs or select another device.

in the datasheet：

宽输入电压：4.2V（2.5V 偏置）至 55V（60V 最大输入电压）,外置mos管应该可以输出25A的电流

  • 0
    TI__Mastermind 21720 points

    Hello user631857,

    Thanks for reaching out with your question and for considering the LM5176 in your design. Sorry to hear you having issue with WEBENCH. I have contacter the responsible engineer and the should get back to you shortly.

    I would also recommend that you take a look a this reference design. It has very similar operating conditions to your design. It might be a good starting point.

    Please let me know if you have any questions.

    -Garrett

  • 0 in reply to Garrett Roecker
    Genius 4910 points

    Hello User,

    Please note that the design fails for your condition as it violates the maximum junction temperature of 150C.Also the junction temperature of FETS violate the limit.

    You can create the design for the same condition by reducing the ambient temperature to -20C or below than that as this would reduce the temperature of those devices by that amount.

    Thanks and Regards,

    Atul