TIDA-00779: tida-00779

anjana desai

Prodigy 190 points

Part Number: TIDA-00779

Hi,

In TIDA-00779 3.5KW PDC design, why two boost diodes(D1, D3) are used? also how to calculate D2 and L4? plz help

over 8 years ago

0 Yuan Tao over 8 years ago

TI__Intellectual 950 points

Hi Desai,

We used two diodes in parallel just because the current is higher than one, we don't need L4 (you can short it) if no EMI concern, D2 is designed for inrush current when we started, which is relevant with the value of bus capacitor, thanks.

0 anjana desai over 8 years ago in reply to Yuan Tao

Prodigy 190 points

Thanks for reply,
Can you please mention equations (if any) for selection of D2.

0 Yuan Tao over 8 years ago in reply to anjana desai

TI__Intellectual 950 points

Hi Desai,

You can refer to di= C du/dt

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TIDA-00779: tida-00779