TPS548A20: Schematic review

Anandraj Shanmugam

Prodigy 20 points

Part Number: TPS548A20

Tool/software:

Hi Team

Please find the attached Schematic in our design.

Our Requirement as follows:

VIN Min VIN max Output voltage Maximum current (peak) [A]
6.6 13.2 1.2V 15A

Kindly provide the schematic review comments based on above design requirement.

Thanks & Regards,

Anandraj S

6 months ago

0 Ryan Chen 6 months ago

TI__Expert 8886 points

Hi Anandraj,

Looking at the schematic, for a maximum peak current of 15A, recommend increasing Rtrip to 49 kohm.

Also, since this part is DCAP3, it does not need these additional ripple injection components and can be unpopulated.

Best,

Ryan

0 Anandraj Shanmugam 6 months ago in reply to Ryan Chen

Prodigy 20 points

Hi Ryan,

Thanks for your feedback.

Kindly provide the feedback on External MOSFET, Inductor and Output Capacitors as per our requirement mentioned above.

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Regards,

Anandraj S

0 Ryan Chen 6 months ago in reply to Anandraj Shanmugam

TI__Expert 8886 points

Hi Anandraj,

R431, C776, and C777 are used for ripple injection and can be unpopulated for this schematic. The TPS548A20 uses DCAP3 which does not need any external ripple injection components. C775 and R430 are used for snubber which is okay and C778-C789 are output capacitors which are okay. L13 output inductor is okay.
Best,

Ryan

0 Anandraj Shanmugam 6 months ago in reply to Ryan Chen

Prodigy 20 points

Hi Ryan,

Thanks for your feedback.

Regards,

Anandraj S

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TPS548A20: Schematic review