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KEY POINTS
1. Chip designs have become denser, but
their chip-package resonant frequencies
have not changed much because as silicon
capacitance went up in denser packages,
technology evolved to reduce inductance. In
power-converter switch devices, to make the
conversion more efficient, you must reduce
capacitance and inductance simultaneously.
2. When working to shrink a design with
high-current circuit loops of a certain size
and distance, if distances shrink faster
than loop shrinkage, you will increase the
coupling coefficient, which can cause
unexpected problems.
ISTVAN NOVAK
Principal Signal and Power
Integrity Engineer, Samtec
Flex Suppressor®
T52x & T530 KO-CAP® Polymer Capacitors
Electromagnetic wave suppression—the
electromagnetic wave enters through the
sheet and is suppressed by losing its
magnetic structure
Resonance suppression—controls the high-
frequency current and suppresses unwanted
electromagnetic resonance by creating impedance
Wide range of frequencies available from MHz band to GHz band
Combines the low ESR of MLCCs, the high
capacitance of aluminum electrolytic, and the
volumetric efficency of tantalum into a single
surface mount package
Unlike liquid electrolyte-based capacitors,
KO-CAP has a very long operation life and high
ripple current capabilities
KO-CAP features stable capacitance across temperature and voltage
