Coming here to get some help with the cap bank reservoir.
I've tried to add two 70k uF 16v cap nearest the high load device but the problem is that the SMPS goes somehow in protection from the inrush current required from the caps.
It simply won't startup, maybe a NTC Thermistor?
Any suggestion? The load would be 350w-400w +-
This is the cap : https://www.mouser.com/ProductDetail/80-ALS30A683DF016
I've tried to add two 70k uF 16v cap nearest the high load device but the problem is that the SMPS goes somehow in protection from the inrush current required from the caps.
It simply won't startup, maybe a NTC Thermistor?
Any suggestion? The load would be 350w-400w +-
This is the cap : https://www.mouser.com/ProductDetail/80-ALS30A683DF016
Hi,
that behaviour is typical for most SMPS and the datasheet may tell You the maximum allowed capacitance value (typically quite small) for problem-free start-up. The inrush current triggers the current limit circuitry which often shows a foldback/trip&restart/hickup character.
The datasheet should inform you about the current limiting character.
You can find SMPS that allow to charge Caps .... just read them manuals 😉
jauu
Calvin
that behaviour is typical for most SMPS and the datasheet may tell You the maximum allowed capacitance value (typically quite small) for problem-free start-up. The inrush current triggers the current limit circuitry which often shows a foldback/trip&restart/hickup character.
The datasheet should inform you about the current limiting character.
You can find SMPS that allow to charge Caps .... just read them manuals 😉
jauu
Calvin
One of the major advantages of SMPS is not needing any large filter caps after it (and fairly modest ones inside it). Just 100uF on each rail for amp stability should be plenty on the output. But note you can't get away with pulling large transient currents from a SMPS, you have to respect its ratings.
I assume by 70k µF you mean 70mF? ie 70,000µF?
One approach to increasing transient load handling is to use a slow-start relay circuit on the filter caps so the power supply never has to provide large inrush currents.
I assume by 70k µF you mean 70mF? ie 70,000µF?
One approach to increasing transient load handling is to use a slow-start relay circuit on the filter caps so the power supply never has to provide large inrush currents.