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KEY POINTS
1. Small ceramic surface-mount capacitors with
low ESR and ESL take up less room and are
suitable for use with front-end power supplies
that have high transient performance. Some
capacitor vendors offer special geometries that
help lower impedance.
2. One approach to lowering impedance is power
MOSFETs with integrated drivers, called
DrMOS. A monolithic DrMOS is one in which a
discrete driver and the power FET occupy the
same silicon. Each power cell has a small driver
circuit next to it, which can operate at high
switching speeds.
3. An integrated power module provides the highest
power density solution with small power solution
size, high efficiency, and fast transient response.
HENRY ZHANG
Sr Director, Applications
Engineering, Analog
Devices, Inc.
A720 Aluminum Organic Capacitors
The KEMET Aluminum Organic Capacitor
(AO-CAP) is a solid-state aluminum capacitor
The cathode is a conductive organic polymer,
which results in very low ESR and improved
capacitance retention at a high frequency
The A720 offers long operation lifetimes and
high operational temperatures and may be
operated at 100% of rated voltage
TPI Series Large Current Power Inductors
CFlat wire, "one turn through the
construction" design enables high efficiency
at large currents
Operating temperature up to 125°C
AC-optimized design available
