Step up DC-DC Converter

Pavan Kondaka

Other Parts Discussed in Thread: TPS61220, TPS61222

Dear All,

I am designing a circuit which operates at +3.3V, to this circuit I have to interface an analog sensor which operates at +5V.

My question is, how can I power up the analog sensor?

Can I use step up dc-dc converter for stepping up +3.3V to +5V, if so kindly let me know which is the best suitable to my application.

over 10 years ago

0 Juergen over 10 years ago

TI__Expert 5425 points

Yes, this is how it is usually done. To recommend a device it is important to know how much current the sensor needs at its 5V rail.

You can use power quick search on http://www.ti.com/lsds/ti/analog/powermanagement/power_portal.page
to get suitable step up dc-dc converter recommendations.

0 Pavan Kondaka over 10 years ago in reply to Juergen

Prodigy 50 points

Dear Juergen,

Thank you for replying me. The sensor requires a current of 10mAdc at 5V rail.

The link which you sent is showing an error, its not opening.

Kindly suggest me a simple, compact step up dc-dc converter.

0 Juergen over 10 years ago in reply to Pavan Kondaka

TI__Expert 5425 points

You can use TPS61222. This is a 5V fixed output voltage step up converter. In case you want to keep the option to adjust the output voltage TPS61220 would be a good choice.

If the link does not work you may try typing power.ti.com in the address bar of your browser.

0 Pavan Kondaka over 10 years ago in reply to Juergen

Prodigy 50 points

Dear Juergen,

Thank you for your valuable suggestion.

Power management

Power management forum

Step up DC-DC Converter