mic4723yml Micrel Semiconductor, mic4723yml Datasheet - Page 17

• Manufacturer Part Number: mic4723yml
• Description: Mic4723 3a 2mhz Integrated Switch Buck Regulator
• Manufacturer: Micrel Semiconductor

Ripple measurements
To properly measure ripple on either input or output of a
switching regulator, a proper ring in tip measurement is
required. Standard oscilloscope probes come with a
grounding clip, or a long wire with an alligator clip.
Unfortunately, for high frequency measurements, this
ground clip can pick-up high frequency noise and
erroneously inject it into the measured output ripple.
The standard evaluation board accommodates a home
made version by providing probe points for both the
input and output supplies and their respective grounds.
This requires the removing of the oscilloscope probe
sheath and ground clip from a standard oscilloscope
probe and wrapping a non-shielded bus wire around the
oscilloscope probe. If there does not happen to be any
non-shielded bus wire immediately available, the leads
from axial resistors will work.
shortest possible ground lengths on the oscilloscope
probe, true ripple measurements can be obtained.
Micrel, Inc.
January 2008
By maintaining the
17
M9999-011808-D
MIC4723