The commercial SMPS 5V/1A is purchased. It have 140mV ripple, and then
I reduced ripple 40mV using pi LC filter as attached schematic.
But as you see on the scope view 2.jpg attached, about 330KHz transient(impulse) voltage exists. I would like to eliminate transient 40mV to make to 10mV ripple.
Could you anybody help me?
PS.
1.jpg - No filter component
2.jpg - After filter applied
I reduced ripple 40mV using pi LC filter as attached schematic.
But as you see on the scope view 2.jpg attached, about 330KHz transient(impulse) voltage exists. I would like to eliminate transient 40mV to make to 10mV ripple.
Could you anybody help me?
PS.
1.jpg - No filter component
2.jpg - After filter applied
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