TIDA-010054: TIDA-010054

Upasana Sarma

Part Number: TIDA-010054

Hi,

My application includes a 400V DC at the primary input and 48V DC at the secondary output? What value of capacitor do you recommend to be placed at these two terminals?

over 3 years ago

0 Lei Song over 3 years ago

TI__Intellectual 1100 points

Hello,

you can take an equation C=Ipeak*d*Ts/delta_V for a quick calculation, some margins need to be added for load or line regulations

Ipeak is the peak current for prim or sec sides.

d is the max phase shift.

Ts is switching period

delta V is the max ripple allowed for DC output or input

If prim input is PFC output, the prim cap selection may depend on PFC output as well.

Regards

Lei

0 Upasana Sarma over 3 years ago in reply to Lei Song

Prodigy 100 points

thank you sir

0 Lei Song over 3 years ago in reply to Upasana Sarma

TI__Intellectual 1100 points

You're welcome.

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TIDA-010054: TIDA-010054