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TPSF12CX-MATHCAD

TPSF12C1/-Q1 and TPSF12C3/-Q1 common-mode AEF Mathcad design file

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Latest version
Version: A1
Release date: 01 Mar 2024
Products
Power-supply filter ICs
TPSF12C1 Common-mode active EMI filter (AEF) for single-phase systems TPSF12C1-Q1 Automotive common-mode active EMI filter (AEF) for single-phase systems TPSF12C3 Common-mode active EMI filter (AEF) for three-phase systems TPSF12C3-Q1 Automotive common-mode active EMI filter (AEF) for three-phase systems
Hardware development
Evaluation board
TPSF12C1QEVM TPSF12C1-Q1 single-phase active EMI filter evaluation module TPSF12C1EVM-FILTER TPSF12C1 single-phase active EMI filter evaluation module TPSF12C3QEVM TPSF12C3-Q1 three-phase active EMI filter evaluation board

Release Information

This Mathcad worksheet is offered to predict the stability of a voltage-sense, current-inject active EMI filter (AEF) circuit, in particular with respect to TI's TPSF12C1/3/-Q1 family of AEF ICs, and to assist with component selection. The model is inclusive of most parasitc effects and can be used as a quick check of the loop gain and insertion loss prior to simulation, bench measurement and fine tuning.

 

The worksheet functions for single- and 3-phase AC systems and facilitates two ways of entering the CM choke parameters:

1. Using an equivalent circuit model with (a) resistive and capacitive parasitics –  suitable for ferrite-core chokes; (b) a ladder network of three parallel RL circuits -- suitable for nanocrystalline chokes

2. Using measured impedance data (magnitude and phase).

 

The worksheet is ideal for knowledge capture, unit-aware calculation reuse and for engineering collaboration amongst design, systems & application engineers.