Boost Controllers for 3.3V to 12~24V conversion

Jeferson Pehls

Other Parts Discussed in Thread: TPS61170, LM2731

Hello sirs.
I have a PCB where I have a precision 3.3V power supply with 1A capacity.
I will need another power supply with 12V or 15V or 20V or 24V capable of supplying around 80mA DC, generated from this 3V3 rail.

I will change the PCB layout when needed, and the only power source available to generate the "boost" voltage is the 3.3V rail.

Somebody recomends controller ICs for this purpose?

I have many types and values of inductors here so I just need to get some samples of some controller ICs, to test them in practice.

This power supply can be not insulated (no need of a flyback insulated design).
I can buy the Boost controllers on Digikey.

The parameters are:

3.3V -> 12V (80mA or more, if possible)
3.3V -> 15V (80mA or more, if possible)
3.3V -> 20V (70mA or more, if possible)
3.3V -> 24V (60mA or more, if possible)

Recommendations?

This power supply will be used in supersonic applications. Help?

over 13 years ago

0 Matthew Day over 13 years ago

TI__Mastermind 36110 points

The Power Management Selection Guide and Product Quick Search found by clicking on www.ti.com and then Power Management will be a good starting point. Webench will also provide working solutions when you enter the electrical requirements. Your local distributor will also be able to help with detailed component selection.

0 Jeff F over 13 years ago in reply to Matthew Day

TI__Guru**** 165786 points

I suggest using Webench to design TPS61170 solutions.

0 Giuseppe Pinto over 13 years ago

TI__Expert 3950 points

Hello Jeferson,

Please cosider also the LM2731

1. two version at 1.6MHz and 600kHz

2. ISW max 2A

3. smal package SOT-23

furthermore you can use WEBENCH for the selection.

Regards,

Giuseppe

0 Jeferson Pehls over 13 years ago in reply to Giuseppe Pinto

Expert 1170 points

Hi.

Yes, I found this IC suitable for my application. It supports a minimum input of 2.7V. 

Another persons of other forums also recommended this IC. I will buy some samples.

Thanks.

Power management

Power management forum

Boost Controllers for 3.3V to 12~24V conversion