PMP20878: Transformer (Primary: auxiliary) turns ratio and inductance how to calculate?

Tracy Song

Part Number: PMP20878
Other Parts Discussed in Thread: UCC2897A

Just touched the power field，In the schematic diagram, how is transformer T2 and inductance L6 calculated to obtain VCIN of about 12.7v?PMP7410 SCH.pdf

over 4 years ago

0 Robert Taylor1 over 4 years ago

TI__Expert 5425 points

Hi Tracy,

I am confused are you looking for info on how to calculate the parameters for PMP20878 or PMP7410?

A great tool to help with these is Power Stage Designer, it is a free java based program that can help you calculate the values.

Please check it out

Thanks,

Robert

0 Tracy Song over 4 years ago in reply to Robert Taylor1

Intellectual 350 points

I want to know the specific calculation formula and process.Can you tell me?

0 Robert Taylor1 over 4 years ago in reply to Tracy Song

TI__Expert 5425 points

Hi Tracy,

please refer to the applications section of the UCC2897A datasheet.

Thanks,

Robert

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PMP20878: Transformer (Primary: auxiliary) turns ratio and inductance how to calculate?