TPS54240: efficiency data

kura

Genius 4840 points

Part Number: TPS54240
Other Parts Discussed in Thread: TPS62175,

If you have efficiency data of this part,please send it to us.(Vin:24V,Vout:5V,Iout:0.2A,fsw:1390KHz)

over 7 years ago

0 Robert Blattner over 7 years ago

TI__Expert 6245 points

Hello kura

Using a 400 kHz BOM, I get 78% when converting 24 V to 5 V at 1350 kHz. If you want a more accurate measurement, please send me which inductor you intend on using.

0 kura over 7 years ago in reply to Robert Blattner

Genius 4840 points

Robert-san

Thank you for your reply.

We got inductor information from customer.

Inductance:22uH +/-20%

Current rating:1.4A

DCR:0.259Ω +/-20%

Regards,

0 Chris Glaser over 7 years ago

TI__Guru**** 150770 points

Hi Kura-san,

If the 24V is somewhat well regulated, the 28V-rated TPS62175 gives about 82% efficiency at your conditions, being more optimized for lower currents.

0 kura over 7 years ago in reply to Chris Glaser

Genius 4840 points

Chris-san

Thank you for your reply.

We will introduce TPS62175 as high efficiency option.

Robert-san

Please give us your comment TPS54240 efficiency with their inductor.

0 Robert Blattner over 7 years ago in reply to kura

TI__Expert 6245 points

Hello Kura-san,

I only get 76% when using an inductor similar to the one you describe.

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TPS54240: efficiency data