TPS5401: TPS5401_review

Manjunath G14

Expert 2075 points

Part Number: TPS5401

Hi,

Please review the attached TPS5401 DC-DC converter design and please share your valuable comments on the same to improve the design,

I/p to the device is 4.5-32V and o/p is 3.3V/0.5A

Thanks

over 7 years ago

0 Brani Dubocanin over 7 years ago

TI__Expert 4100 points

Hello,
Your schematic looks good.
Just a few comments:
1. replace 1uF capacitors on input with 4.7uF
2. add small bypass capacitor on input . Suggested 100nF between VIN and GND pin. Place this capacitor as close as possible to IC pins
3. add bypass capacitor on output. Suggest 47 nF or 100nF

Regards
Brani

0 Manjunath G14 over 7 years ago in reply to Brani Dubocanin

Expert 2075 points

Hi Brani,
Thanks for the quick response,
Please find the attached reference document from TI only, for the same spec that is,. 3.3V/0.5A output. I have followed the same design.
Please check it and confirm.

Regards
Manjunath G

0 Manjunath G14 over 7 years ago in reply to Manjunath G14

Expert 2075 points

Hi Brani,
Please update on the design review, waiting for your valuable response on TPS5401 DC-DC converter.

Regards,
Manjunath
Hardware design engineer
Crevavi Technologies

0 Manjunath G14 over 7 years ago in reply to Manjunath G14

Expert 2075 points

Hi Brani,
Please update on the design review.

Regards,
Manjunath
Hardware design engineer
Crevavi Technologies

0 Brani Dubocanin over 7 years ago in reply to Manjunath G14

TI__Expert 4100 points

Hello Manjunath,
Your document is not attached.
Please re-attach.
Regards
Brani

0 Manjunath G14 over 7 years ago in reply to Brani Dubocanin

Expert 2075 points

please find the attached reference design from TI.

Regardswebench_design_4730282_21_257048457.pdf

Manjunath

Design Engineer

0 Brani Dubocanin over 7 years ago in reply to Manjunath G14

TI__Expert 4100 points

Hello,
This design looks good.
Please see comments above regarding need to place small bypass capacitor on input and output.
regards
Brani

0 Manjunath G14 over 7 years ago in reply to Brani Dubocanin

Expert 2075 points

Thanks Brani for all your support.

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TPS5401: TPS5401_review