TPS65270: Seeking Dual-Output Buck Converter Recommendation (12V/5V) for 16V-20V Battery

Dhruvit Bhimani

Part Number: TPS65270
Other Parts Discussed in Thread: TPS62933

Tool/software:

Dear TI Support Team,

I'm working on a project that requires a dual-output buck converter to power a 12V DC motor and a 5V MCU. The power source is a 16V-20V battery. My priorities are cost-effectiveness and readily available components.

Requirements:

Input voltage: 16V to 20V (battery)
Output 1: 12V, 2A to 3A (motor)
Output 2: 5V, 1A to 2A (MCU)
Low cost and readily available components preferred

Research and Questions:

I've researched TI's buck converter offerings and came across the TPS65270PWPR. However, the datasheet doesn't provide clear instructions on configuring the outputs for 12V and 5V.

My questions:

Can the TPS65270PWPR be configured to meet my specific voltage requirements (12V and 5V outputs)? If so, could you please provide guidance on the configuration process?
If the TPS65270PWPR is not suitable, could you recommend alternative TI buck converter options that meet my needs for a low-cost, dual-output solution with readily available components?

Additional Information:

I have experience with basic soldering and component selection.
Project deadline is approaching, so a prompt response would be greatly appreciated.

Thank you for your time and assistance.

Sincerely,

Dhruvit Bhimani

over 1 year ago

0 Dhruvit Bhimani over 1 year ago

Intellectual 310 points

also iclude 3 output channel 12v,5v,3v ic if possible

0 Lucia Gao over 1 year ago in reply to Dhruvit Bhimani

TI__Mastermind 31861 points

Hi Dhruvit,

TPS65270 input range is from 4.5-18V. As you need 16-20V, I don't think it will be suitable for your application.

Will dual Buck a must requirement? We also have other good recommendations which is single Buck but are cost effective.

Thanks!

BRs

Lucia

0 Dhruvit Bhimani over 1 year ago in reply to Lucia Gao

Intellectual 310 points

Hi, Lucia

Thank you for your suggestion & I am also thinking of to do that,
My need is max 18v input

1. 12v output with at least 2.5A to 3A current and least pinout so the price and component count also be less

2. 5v output with decent 1A output is sufficient less then 1 will also acceptable but same as above less component count and least pin out

as of I have found on your product selector, I have selected each one for above application, but I think I've missed few cheaper options if you can help me on that.

Regards,

Dhruvit Bhimani

0 Lucia Gao over 1 year ago in reply to Dhruvit Bhimani

TI__Mastermind 31861 points

Hi Dhruvit,

If you care more about price and component count, I would recommend single Buck TPS62933 which is 3.8-V to 30-V, 3-A, 200-kHz to 2.2-MHz, low-IQ synchronous buck converter in SOT-583 package

BRs

Lucia

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TPS65270: Seeking Dual-Output Buck Converter Recommendation (12V/5V) for 16V-20V Battery