pi filter

pi filter

[′pī ‚fil·tər]
(electronics)
A filter that has a series element and two parallel elements connected in the shape of the Greek letter pi (π).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Figure 3 shows the arrangement of components for a Pi filter, which requires two planar capacitor arrays.
With PI filter realizations, in a multirate filter each delay must be repleaced with K delays.
* Field current regulator with PI filter (MAN operating mode);
The Mini series is available in both LC and PI filter configurations from 1 to 13 positions.
All models provide overvoltage and continuous short circuit protection, and they contain an internal input PI filter.
It features a 2:1 input voltage range, input-to-output isolation, soft start, an input Pi filter, short circuit protection, 380k Hz switching frequency, flyback topology and four low-dropout linear regulators.
Pi filter configurations such as C-R-C attenuate noise in both directions, preventing EMI from going both in and out of the system.
All models feature input pi filters, input under voltage lockout, output current limiting, and short-circuit protection.
The industry has reached the point where traditional architectures, based upon resistor--capacitor (RC) pi filters, impose limitations in terms of signal integrity and system robustness, and advanced integrated passive solutions based on a new architecture are required.