The TPSF12C1 is an active filter IC designed to reduce common-mode (CM) electromagnetic interference (EMI) in single-phase AC power systems.
The active EMI filter (AEF) configured with voltage sense and current inject (VSCI) uses a capacitive multiplier circuit to emulate the Y-capacitors in a conventional passive filter design. 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. The effective active capacitance is set by the circuit gain and the injection capacitance. The AEF sensing and injection impedances use relatively low capacitance values with small component footprints. The device includes integrated filtering, compensation and protection circuitry, and an enable input.
The TPSF12C1 provides a very low impedance path for CM noise in the frequency range of interest for EMI measurement. Enabling up to 30 dB of CM noise reduction at the lower end of specified frequency ranges (for example, 150 kHz to 3 MHz) significantly reduces the size, weight and cost of the CM filter implementation.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPSF12C1 Standalone, Active, EMI Filter for Common-mode Noise Mitigation in Single-Phase, AC, Power Systems datasheet (Rev. A) | PDF | HTML | 28 Apr 2023 |
| Certificate | TPSF12C1EVM-FILTER EU Declaration of Conformity (DoC) | 18 May 2023 | ||
| Technical article | How a stand-alone active EMI filter IC shrinks common-mode filter size | 19 Mar 2023 | ||
| White paper | How Active EMI Power-Supply Filter ICs Mitigate Common-Mode Emissions | PDF | HTML | 16 Mar 2023 | |
| Functional safety information | TPSF12C1 Functional Safety FIT Rate, FMD, and Pin FMA | PDF | HTML | 11 Nov 2022 | |
| EVM User's guide | TPSF12C1QEVM Active EMI Filter Evaluation Module for Single-Phase AC Systems | PDF | HTML | 09 Nov 2022 | |
| Certificate | TPSF12C1QEVM EU RoHS Declaration of Conformity (DoC) | 01 Nov 2022 |
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Welcome to the TPSF12C1/-Q1 and TPSF12C3/-Q1 quickstart design tool. This standalone tool facilitates and assists the power-supply engineer with the design of an AEF circuit based on this family of common-mode AEF ICs. As such, the user can expeditiously arrive at an optimized design to meet (...)
| Package | Pins | Download |
|---|---|---|
| SOT-23-THN (DYY) | 14 | View options |
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Welcome to the TPSF12C1 and TPSF12C1-Q1 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with the design of an AEF circuit based on this family of common-mode AEF ICs.
Welcome to the TPSF12C1/-Q1 and TPSF12C3/-Q1 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with the design of an active EMI filter (AEF) circuit based on this family of common-mode AEF ICs. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.