Texas Instruments TPSF12C3QEVM User Manual

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User's Guide
TPSF12C3QEVM Active EMI Filter Evaluation Module for
Three-Phase AC Power Systems
The TPSF12C3QEVM evaluation module (EVM) is specifically designed to conveniently evaluate the
performance of the TPSF12C3-Q1
total size of the common-mode (CM) electromagnetic interference (EMI) filter in three-phase AC power systems,
either with or without a neutral connection.
The TPSF12C3-Q1 provides a very low impedance path for CM noise in the frequency range of interest for EMI
measurement and helps to meet prescribed limits for international EMI standards, such as:
• CISPR 11, EN 55011 – Industrial, Scientific and Medical (ISM) applications
• CISPR 25, EN 55025 – Automotive applications
• CISPR 32, EN 55032 – Multimedia applications
• MIL-STD-461 – Military and defense applications
• RTCA DO-160 – Airborne applications
Enabling up to 25 dB of CM noise reduction at the lower end of specified frequency ranges (for example,
150 kHz to 3 MHz) significantly reduces the size, cost and weight of the common-mode filter implementation,
specifically the common-mode chokes. The device senses the high-frequency noise on each power line using
a set of sense capacitors and injects noise-canceling currents back into the power lines using an injection
capacitor.
A header on the EVM provides connections to the sense and inject capacitors, which are high-voltage rated
components located off-board at or near the passive filter solution. Also included on the EVM are connections for
the bias power supply (VDD and GND), which is set between 8 V and 16 V, and a remote enable (EN) signal.
The GND terminal of the EVM refers to the chassis or Earth ground of the system.
The damping and compensation component values included with this EVM can require modification,
depending on the specifics of the EMI filter implementation and the target application. Refer to the
TPSF12C3-Q1 Standalone Active EMI Filter for Common-mode Noise Mitigation in Three-Phase
AC Automotive Power Systems
guidance pertaining to AEF circuit operation, passive component selection and expected EMI
performance.
SLVUCM2 – JANUARY 2023
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ABSTRACT
power-supply active filter
Note
data sheet and TPSF12C3-Q1 quickstart calculator
TPSF12C3QEVM Active EMI Filter Evaluation Module for Three-Phase AC
Copyright © 2023 Texas Instruments Incorporated
IC. The solution helps to substantially reduce the
for additional
1
Power Systems