TPS51220: TPS51220 for dual 12V output

Terry Wu2

Expert 2110 points

Part Number: TPS51220

Hello Sir,

I want to confirm is it ok for 24Vin to dual 12V@17A and 12V@8A ?

Is there design tool for external components ?

Many thanks !

over 5 years ago

0 Sam(MPAA) Zhang over 5 years ago

TI__Mastermind 19080 points

Hi Terry,

Yes, TPS51220 is suitable for this application.
You can follow the design guide in datasheet(page 27) for external components selection. Please be careful with the compensation due to high Vout if you are using current mode control.

Regards,
Hao

0 Sam(MPAA) Zhang over 5 years ago

TI__Mastermind 19080 points

Hi Terry,

You may also use the design calculator here.

TPS5122x_Component_Calculator_N0R1_20170619.xlsx

Regards,

Hao

0 Terry Wu2 over 5 years ago in reply to Sam(MPAA) Zhang

Expert 2110 points

Hello Sam,

Thanks your file so much !

Would you pls help to check this calculator OCP(Rx,Cx,Rc) setting and compensation R/C whether its OK 24Vin to 12V 17A(OCP 20A) and 8A(OCP 11A) output.

Many thanks !0143.TPS5122x_Component_Calculator_N0R1_20170619.xlsx

0 Sam(MPAA) Zhang over 5 years ago in reply to Terry Wu2

TI__Mastermind 19080 points

Hi Terry,

It looks good to me. Thanks.

Regards,

Hao

0 Terry Wu2 over 5 years ago in reply to Sam(MPAA) Zhang

Expert 2110 points

Hello Sam,

Got it.Thanks your help !
Just one question that why the OCP min value in red color ?

TKS !

0 Sam(MPAA) Zhang over 5 years ago in reply to Terry Wu2

TI__Mastermind 19080 points

Hi,

Sorry, I don't konw about this either... This sheet is not created by me.

0 Terry Wu2 over 5 years ago in reply to Sam(MPAA) Zhang

Expert 2110 points

Hello Sam,

Got it and thanks your help ~

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TPS51220: TPS51220 for dual 12V output