NEW

TPSF12C1

ACTIVE

Common-mode active EMI filter for single-phase systems

Product details

Device type Common-mode AEF Power supply solution AC/DC Supply voltage (max) (V) 16 Supply voltage (min) (V) 8 Number of phases 1 Iout (A) ±0.1 Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable
Device type Common-mode AEF Power supply solution AC/DC Supply voltage (max) (V) 16 Supply voltage (min) (V) 8 Number of phases 1 Iout (A) ±0.1 Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable
SOT-23-THN (DYY) 14 8.4 mm² 4.2 x 2
  • Functional Safety-Capable
  • Voltage-sense, current-inject active EMI filter
    • Optimized for CISPR 11 and CISPR 32 Class B conducted EMI requirements
    • Low impedance for common-mode emissions over the applicable EMI frequency range (150 kHz to 3 MHz)
    • 50%+ reduction in choke size, weight and cost
    • Peak inject current of ±80 mA (typical)
    • Amplifier with unity gain bandwidth of 113 MHz
  • Wide supply voltage range of 8 V to 16 V
  • Junction temperature range of –40°C to 150°C
  • Simple external configuration for single-phase AC power systems
    • Integrated sensing filter and summing network
    • Low leakage current at line frequency
    • Simplified compensation network
  • Inherent protection features for robust design
    • Withstands surge of 6 kV (IEC 61000-4-5) with minimal external component count
    • Enable pin for remote ON and OFF control
    • VDD voltage UVLO protection with hysteresis
    • Thermal shutdown protection with hysteresis
  • 4.2-mm × 2-mm SOT-23 14-pin (DYY) package
  • Functional Safety-Capable
  • Voltage-sense, current-inject active EMI filter
    • Optimized for CISPR 11 and CISPR 32 Class B conducted EMI requirements
    • Low impedance for common-mode emissions over the applicable EMI frequency range (150 kHz to 3 MHz)
    • 50%+ reduction in choke size, weight and cost
    • Peak inject current of ±80 mA (typical)
    • Amplifier with unity gain bandwidth of 113 MHz
  • Wide supply voltage range of 8 V to 16 V
  • Junction temperature range of –40°C to 150°C
  • Simple external configuration for single-phase AC power systems
    • Integrated sensing filter and summing network
    • Low leakage current at line frequency
    • Simplified compensation network
  • Inherent protection features for robust design
    • Withstands surge of 6 kV (IEC 61000-4-5) with minimal external component count
    • Enable pin for remote ON and OFF control
    • VDD voltage UVLO protection with hysteresis
    • Thermal shutdown protection with hysteresis
  • 4.2-mm × 2-mm SOT-23 14-pin (DYY) package

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.

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.

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Technical documentation

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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

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPSF12C1QEVM — TPSF12C1-Q1 single-phase active EMI filter evaluation module

The TPSF12C1-Q1 evaluation module (EVM) is specifically designed to conveniently evaluate the performance of the TPSF12C1-Q1 active filter IC. The solution improves the common-mode (CM) electromagnetic interference (EMI) signature in single-phase AC and 3-wire DC power systems. The TPSF12C1-Q1 IC (...)
User guide: PDF | HTML
Not available on TI.com
Calculation tool

TPSF12CX-DESIGN-CALC TPSF12Cx quickstart design tool for common-mode AEF

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 (...)

Supported products & hardware

Supported products & hardware

Products
Power-supply filter ICs
TPSF12C1-Q1 Automotive common-mode active EMI filter for single-phase systems TPSF12C1 Common-mode active EMI filter for single-phase systems TPSF12C3-Q1 Automotive common-mode active EMI filter for three-phase systems TPSF12C3 Common-mode active EMI filter for three-phase systems
Hardware development
Evaluation board
TPSF12C1QEVM TPSF12C1-Q1 single-phase active EMI filter evaluation module TPSF12C3QEVM TPSF12C3-Q1 three-phase active EMI filter evaluation board
PCB layout

TPSF12C1QEVM PCB Layout Files

SNVR525.ZIP (3222 KB)
Package Pins Download
SOT-23-THN (DYY) 14 View options

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