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TPS23753: Information for designing DCM mode

Satoshi
Guru 19485 points
Part Number: TPS23753

I think that application note of slva305c is design manual for CCM mode.

Is there any manual for PoE designing of DCM mode? 

Best regards,

Satoshi

  • 0
    TI__Intellectual 1695 points
    Hi Satoshi,

    Currently we don't have manual for PoE design guide in DCM mode. But the application note you mentioned can also be referred to.
    Pay attention to the formulas to calculate are a little different. The key point is that you have to make sure the flyback is working at the boundary of DCM and CCM when applied maximum load. So basically you just need to design the parameters using boundary mode formulas which are a little bit different from CCM mode.
    There are a lot of materials online explain the formulas in DCM and CCM you can refer to. Here is a link for your reference.
    www.ti.com/.../slup254.pdf
    Also there is a excel calculator for you to download.
    www.ti.com/.../FLYBUCK-FLYBACK-DESIGN-CALC

    Thank you.
    Best Regards
    Jack Chen