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);
If the power supply uses power factor correction, a differential mode choke is often used in a
Pi filter configuration with metal-film capacitors to reduce the differential-mode noise.
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.