TPS55340: TPS55340 and TPS25924

Shosuke Sekikawa

Prodigy 50 points

Part Number: TPS55340
Other Parts Discussed in Thread: TPS25924

Dear Support Member

Hello. I'd like to use TPS55340 and TPS25924 together.

could you check my circuit and give some advice.

12V to 24V

Output capacitor : about 1000uF
I'm worry about Inrush current.

C022: No mount

Best Regards.

12V to 24V.pdf

over 5 years ago

0 Yinsong Cai1 over 5 years ago

TI__Expert 7450 points

Hi Shosuke,

Thanks for your interest in TPS55340.

What would be the input voltage range?

Thanks,
Yinsong

0 Shosuke Sekikawa over 5 years ago in reply to Yinsong Cai1

Prodigy 50 points

Hi Yinsong.

Thank you for reply.

Input voltage range is around 12V +/- 5% (11.4V to 12.6V).

Best Regards.

S.Sekikawa

0 Yinsong Cai1 over 5 years ago in reply to Shosuke Sekikawa

TI__Expert 7450 points

Hi S.Sekikawa,

Thank you for the information. I checked the boost part.

The peak current would be 5.2A assuming 90% efficiency, which is very close to the 5.25 current limit. Note that some margin is usually given for transient current overshoot and tolerance.

Not sure about the diode connection.

It looks good to me other than these.

For the input protection part. I'm not very familiar with TPS25924. You can create another thread for this.

Please let me know if you have any questions.

Thanks,
Yinsong

0 Shosuke Sekikawa over 5 years ago in reply to Yinsong Cai1

Prodigy 50 points

Hi Yinsong

Thank you for your reply.

OK. I'll ask another thread.

And I'll take care about current margin.

Thank you.

S.Sekikawa

Power management

Power management forum

TPS55340: TPS55340 and TPS25924