TPSF12CX-MATHCAD

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

TPSF12CX-MATHCAD

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Overview

This Mathcad file is offered to predict the stability of a voltage-sense current-inject AEF circuit, in particular with respect to TI's TPSF12C1/3/-Q1 family of common-mode (CM) AEF ICs, and to assist with component selection. The model is inclusive of most parasitic 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 three-phase AC systems and facilitates two ways of entering the CM choke parameters:

Using a CM choke behavioral model with
- Resistive and capacitive parasitics – suitable for ferrite-core choke
- A ladder network of three parallel RL circuits – suitable for nanocrystalline chokes
Using measured impedance data (magnitude and phase)

Features

Examine the CM choke impedance versus frequency behavior
Select components for the compensation and damping networks
Optimize the loop gain for stability based on the passive filter components
Inspect filter attenuation performance with AEF enabled and disabled

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Design tool

TPSF12CX-MATHCAD — TPSF12C1/-Q1 and TPSF12C3/-Q1 common-mode AEF Mathcad design file

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Supported products & hardware

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

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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

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TPSF12C1-TPSF12C3_AEF_mathcad.zip — 6302 K

TPSF12C1/3 mathcad file

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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.

TPSF12CX-MATHCAD

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