TPS65987D: Please tell me the recommended step-down DCDC converter.

Yuta Nishie

Part Number: TPS65987D
Other Parts Discussed in Thread: TPS55288

Hi,

I am looking for a step-down DCDC converter that controls the output voltage by setting the register with I2C or SPI like the TPS65987D+TPS55288.

Is there a product you recommend for the following conditions?

・USB-PD source

・Input voltage: 24V

・Output power: Max 60 W

Best Regards,

Nishie

over 2 years ago

0 Matthew Schafer over 2 years ago

TI__Expert 4795 points

Hi Nishie,

As you have suggested, the TPS65987D + TPS55288 is TI's recommended solution for PD sourcing applications. We have a few technical articles and app notes outlined on how to implement this solution if needed. Please let us know if you have any further questions.

https://e2e.ti.com/blogs_/b/powerhouse/posts/ease-power-supply-design-for-usb-pd-applications-with-buck-boost-converters

Thanks,

Matt Schafer

0 Yuta Nishie over 2 years ago in reply to Matthew Schafer

Genius 5140 points

Hi Matt-san,

Thank you for your reply.

I think the TPS55288 is a Buck-Boost converter.

I am looking for a Buck (step down) converter and would like to know which product meets the requirements of the first post.

Best Regards,

Nishie

0 Matthew Schafer over 2 years ago in reply to Yuta Nishie

TI__Expert 4795 points

Hi Nishie,

For specifics on buck converters, I will redirect this post to another engineer who supports these products.

Thanks,

Matt

0 Yuta Nishie over 2 years ago in reply to Matthew Schafer

Genius 5140 points

Hi Matt-san,

Thank you for the redirect.

Can I assume that someone else will reply to this thread?

Best Regards,

Nishie

0 Jim Carrillo over 2 years ago in reply to Yuta Nishie

TI__Genius 9148 points

Hi Yuta - yes, someone from our buck converter team will respond tomorrow

0 Yuta Nishie over 2 years ago in reply to Jim Carrillo

Genius 5140 points

Hi Jim-san,

OK!

I look forward to answering from the Buck Converter Team.

Best Regards,

Nishie

+1 Miranda Gu over 2 years ago in reply to Yuta Nishie

TI__Genius 16632 points

Hello Nishie-san,

Could you accept Vout adjustment by changing FB resistors (add a MOSFET to change R_FB)?

We have a new part could support 24Vin, 22Vout max, 8A max. If you are interested, please send me an email (miranda-gu@ti.com).

0 Yuta Nishie over 2 years ago in reply to Miranda Gu

Genius 5140 points

Hi Miranda-san,

I sent you an email. I appreciate your support.

Best Regards,

Nishie

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TPS65987D: Please tell me the recommended step-down DCDC converter.