Boost module ripple

Thread Starter

upand_at_them

Joined May 15, 2010
766
I got one of these 3.3V DC-DC boost converter modules:

https://www.amazon.com/gp/product/B07TJTGPJC/

With a simple LED/resistor load I see about 20mV noise with some 50mV spikes once in a while. I tried different caps on the output, but that only increased the noise. Huh? I can't get the ripple down at all? I was hoping to use this with a small HF transceiver.
 

Thread Starter

upand_at_them

Joined May 15, 2010
766
Thanks.

What size choke? I think the only one I have is for RF. If I can even find it.

LC low-pass filter?....With a really low cutoff? The boost module runs at 350kHz.
 
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