TIDA-01604: I'm a little confused about some material in this design

user6093878

Part Number: TIDA-01604

Hello，

Recently I learned about the TIDA-01604, and I have some questions.

This design is a bridgeless power factor correction (PFC) solution, what's the role of the D102(FET Paralled Rectifier).

Shall we use the SiC MOSFET C3M0065100K or C3M0030090K to take the place of the C2M0025120D(Q7-Q10).

Thanks!

over 4 years ago

0 Xun over 4 years ago

TI__Mastermind 18120 points

Hello,

The D102 rectifier is for inrush current control for protecting the MOSFET body diode.

Yes, you may. Just keep in mind that the higher the Rdson MOSFET being used, the higher the conduction losses are, which eventually decrease the efficiency.

Regards,

Xun

0 user6093878 over 4 years ago in reply to Xun

Prodigy 250 points

Hello,

Thanks, I comprehend the function of the D102 rectifier.

And I wonder that if the Vds and Id (except Rdson) should be consider when we use the MOSFET C3M0030090K(900V, 63A) or C3M0065100K(1000V, 35A) to take the palce of C2M0025120D(1200V, 90A).

Best Regards，

Cao

0 user6093878 over 4 years ago

Prodigy 250 points

Hello,

I'm still a little confused about the device selection.

And I hope to hear from you soon.

Thanks!

0 Xun over 4 years ago in reply to user6093878

TI__Mastermind 18120 points

Hi Cao,

it is ok to replace the C2M0025120D with C3M0030090K. The RMS current flowing into the LF MOSFET bridge is about 32A. C3M0065100K is too less.

0 user6093878 over 4 years ago in reply to Xun

Prodigy 250 points

OK，I see that.

Thank you very much!

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TIDA-01604: I'm a little confused about some material in this design