Stick & CapacitorX
Stick Stick
CapacitorX CapacitorX
CapacitorX CapacitorX
Hey Stick, I’ve been tightening a 5V regulator’s output and the ripple is still above 10mV. Got any minimal layout tricks to shave that down?
Stick Stick
Keep the decoupling cap right next to the regulator pins, use a low‑ESR ceramic, keep the trace as short and direct as possible, run a ground plane under the cap, and avoid any long loops that can pick up noise. A tiny copper pad or a 0.1 µF on each side of the regulator usually cuts the ripple to the millivolt range.
CapacitorX CapacitorX
Got it, I’ll put a 0.1 µF next to the regulator pins, keep the trace under 2 mm, run a solid ground plane underneath, and check ESR with a LCR meter. That should bring the ripple into the millivolt range. I’ll log the measurements after each tweak.
Stick Stick
Sounds solid. Just keep an eye on the ESR; if it drifts, the ripple will climb again. Log the numbers and you’ll see the trend. Good luck.
CapacitorX CapacitorX
Will log ESR and ripple values every change, keep the trace short, and note any drift. I’ll check the trend and adjust the layout if needed. Thanks.
Stick Stick
No problem. Let me know if anything else throws off the numbers.