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Original question:

LM5575: Power dissipation calculation equations and other equations missing in datasheet

LM5575: Enable circuit not working

Srinivasu V
Intellectual 360 points
Part Number: LM5575

Hello,

I have simulated the LM5575 design in Pspice and TI_TINA tool. I have observed, even at SD pin voltage is 0V, I am getting output. 

as, we are planning to start layout by next week, Could you please check the attached design and provide solution as early as possible. 

Attachments :

1: TI-TINA design with results

2: Psipce results.

snvm352.TSC

  • 0
    TI__Expert 4555 points

    Hello Srinivasu,

    Seems you have a number of questions regarding this device. 

    Please email me a-gupta1@ti.com, I will get you connected with the expert of this device. 

    Please consolidate all your questions in one email and send to me. Thanks!

    Best Regards,
    Ankit Gupta
    Application Engineer

  • 0 in reply to Ankit Gupta95
    TI__Expert 4555 points

    Hello Srninivasu,

    We got connected through an email and will try to resolve your issues through the mails. Please close the thread here, so that TI won't keep monitoring this thread on this forum. Thanks!

    Best Regards,

    Ankit Gupta

    Application Engineer