TPS23753AEVM-004: recommend a transformer

Yuta Nishie

Tool/software:

Hi,

The HA3801-BL implemented in TPS23753AEVM-004 is difficult to obtain, so I am looking for an alternative. Could you please recommend a transformer?

Best Regards,

Nishie

6 months ago

+1 Diang Xing 5 months ago

TI__Mastermind 37061 points

Hi Nishie,

Thanks for reaching out!

You can try EFD15-145 (www.semitelint.com/download_detail_06f5iUsB8nCoUYu_Jk3xIXIla5f8J_J7yuhr3h2nKRM).

Best regards,

Diang

0 Yuta Nishie 5 months ago in reply to Diang Xing

Genius 4955 points

Hi Diang-san,

Thank you for letting me know the model name.

In addition, I am looking for a transformer that can be used at 250kHz. Could you please tell me the recommended model name?

Also, I would like to know if there are any design considerations or reference materials available for use at 250kHz.

Best Regards,

Nishie

0 Diang Xing 5 months ago in reply to Yuta Nishie

TI__Mastermind 37061 points

Hi Yuta-san

Thanks for your reply.

There may not be significant changes in the TPS23753AEVM-004 reference design at 125kHz and 250kHz. The 125kHz transformer are designed with higher saturation current / larger inductance, and can be used in 250kHz also.

Coilcraft also has multiple 3.3V transformers can be checked:

www.coilcraft.com/.../

Best regards,

Diang

0 Yuta Nishie 5 months ago in reply to Diang Xing

Genius 4955 points

Hi Diang-san,

Thank you for your support.

Am I correct in understanding that the EFD15-145 you suggested can also be used at both 125kHz and 250kHz?

Best Regards,

Nishie

+1 Diang Xing 5 months ago in reply to Yuta Nishie

TI__Mastermind 37061 points

Hi Nishie,

EFD15-145 should be ok at 125k and 250k. It shows referring to TPS23753AEVM, which is 125k, and it should be able to work at 250k in most of cases with lower peak current and not significant changes in frequency.

Best regards,

Diang

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TPS23753AEVM-004: recommend a transformer