Boost/Buck Converter for a tethered power supply

Val Schmidt

Hello,

I'm looking to power by a thin tether a robotic device (with motors) that is usually powered by batteries.

So what I am thinking is to temporarily increase the voltage of a power source allowing a corresponding decrease in current for a fixed maximum wattage, such that the power supply can be supplied through a very small diameter wire for some distance, before decreasing the voltage back to the original value to supply the load.

I think this looks like a pair of DC/DC converters that could take a 5V, 10+ Amp DC power source, boost it to a high voltage (100 V or more), low amperage, but equivalent wattage signal capable of being transmitted over a high-gauge wire, and then buck converted back to a 5V high amperage supply.

Can anyone recommend a pair of devices that could do this?

Thanks,

Val

over 5 years ago

0 Garrett Roecker over 5 years ago

TI__Mastermind 21720 points

Hi Val,

Thanks for reaching out with your questions.

Can you please let me know what your desired output voltage range is? It might be hard to find a design that meets your application requirements exactly. Please take a look at this design for a high step-up ratio boost controller. It should be a good starting place.

Thanks,

Garrett

0 Youhao Xi over 5 years ago in reply to Garrett Roecker

TI__Guru* 78370 points

Hi Val,

Can we assume the issue is resolved, given not updates for a week? You can always re-open the thread by adding a new post.

Thanks,

Youhao Xi, Applications Engineering

Power management

Power management forum

Boost/Buck Converter for a tethered power supply