Charging Super Capacitor w/Buck Converter: Max Voltage Draw?

[Puglife]

If I am charging a super capacitor with buck converter, that is a 1 amp, 1-18 volt output, and the capacitor is rated for 2.5 volts, how do I stop the buck converter from feeding it more than 2.5 volts? When I attach the capacitor to my digital power supply, it starts charging, and the voltage slowly increase to be more than 2.5 volts, at which point I turn it off. I was wondering will it draw more than 2.5 volts from my buck converter? If so how do I stop it?

 

[berkeman]

If I am charging a super capacitor with buck converter, that is a 1 amp, 1-18 volt output, and the capacitor is rated for 2.5 volts, how do I stop the buck converter from feeding it more than 2.5 volts? When I attach the capacitor to my digital power supply, it starts charging, and the voltage slowly increase to be more than 2.5 volts, at which point I turn it off. I was wondering will it draw more than 2.5 volts from my buck converter? If so how do I stop it?

Can you say more about the application? Can you post a link to the Buck converter you are using?

 

[Puglife]

Can you say more about the application? Can you post a link to the Buck converter you are using?

Yes, I had accidentally wrote the wrong voltages for the buck converter, it is 1.23 to 30, but the application, and 2.5 volt capacitor is the same. https://www.amazon.com/dp/B008BHAOQO/?tag=pfamazon01-20

 

[Puglife]

Wait, is that an adjustable output voltage, because the pot looking thing with the screw looks like it would be adjustable? If they are adjustable, then problem solved.

 

[berkeman]

Wait, is that an adjustable output voltage, because the pot looking thing with the screw looks like it would be adjustable? If they are adjustable, then problem solved.

Yes, that is probably how it works. It should say on the datasheet or application note.

 

[Puglife]

Yes, that is probably how it works. It should say on the datasheet or application note.

thanks