TPS560430: TPS560430:

david sun36

Part Number: TPS560430

if the input and output voltage is close, for example, one is 4.0V, one is 3.6V. for the duty cycle limit, many DC/DC converter will not work. does TI has a convert like Diodes AP63200, which can work like an LDO when in input voltage goes down very close to the output voltage.

Thanks,

David Sun

over 5 years ago

0 Neal Zhang over 5 years ago

TI__Expert 4720 points

Hi David,
TPS560430 is a good choice for you.

0 david sun36 over 5 years ago in reply to Neal Zhang

Prodigy 90 points

Dear TI support

thank you very much for the prompt response, but design tool tells me there is a duty cycle problem.hen I use TI

0 Neal Zhang over 5 years ago in reply to david sun36

TI__Expert 4720 points

Hi David,
Thanks for your feedback and Webench needs to be changed. TPS560430 is our new designed part and can support max 98% duty cycle and can meet your application. We will update Webench later.

0 david sun36 over 5 years ago in reply to Neal Zhang

Prodigy 90 points

Hi Neal,

I am glad that this chip can support supper high duty cycle, I rely on the Webench to optimize the periphral components. when do you think I can use it.

Thanks,

David Sun

0 Neal Zhang over 5 years ago in reply to david sun36

TI__Expert 4720 points

Hi David,

It may take some time. In the mean time I suggest you just change Vin_min to 4.5V, and the Webech will work correctly, and you can rely on the result for simulation. For the IC, it doesn't make any difference whether Vin is 4.4V or 4.5V.

0 david sun36 over 5 years ago in reply to Neal Zhang

Prodigy 90 points

the worst case in my application is input 4V, output 3.6V. I want to know the design value of this use case.

0 Neal Zhang over 5 years ago in reply to david sun36

TI__Expert 4720 points

Yes you can use my suggested method for calculation and simulation.

0 Neal Zhang over 5 years ago in reply to Neal Zhang

TI__Expert 4720 points

Hi David,
You can send an email to me neal-zhang@ti.com if you need further help

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TPS560430: TPS560430: