TPS61178EVM-792: Not getting enough current

Jeff Maier

Part Number: TPS61178EVM-792
Other Parts Discussed in Thread: TPS43061

Using the development board, input voltage is 12V from 3 18650 batteries and output is at 16V. Perfect! Just not getting enough current to run our motor. We are using batteries, so our input voltage can be between 4V and 12V and we would like the output at 16V. We need up to 6A under our heaviest load, but typical is 3A. At 6A, we would like to cut the power and resume when the load is under 6A.

Can you please recommend a part for us (hopefully with an eval kit) that would make more sense for us?

Thank you!

over 4 years ago

0 Jeff Maier over 4 years ago

Prodigy 30 points

0 Jeff Maier over 4 years ago in reply to Jeff Maier

Prodigy 30 points

As you can see in the introduction, it says that this is a 10A part which should have plenty of power for our application. Could this be a configuration issue? The table shows much less for Amperage. Is 10A peak Amperage? and the max steady state only 2A? If so, is there a better part for our application?

0 Jasper Li over 4 years ago in reply to Jeff Maier

TI__Mastermind 46905 points

Hi Jeff,

the 10A is the input current, not output current. in this application, output power is 96W, the input current could reach at least 24A from 4V input.

I would suggest a boost controller device, such as TPS43061

Power management

Power management forum

TPS61178EVM-792: Not getting enough current