TPSF12C3 Series

Common-mode active EMI filter (AEF) for three-phase systems

Catalog

Common-mode active EMI filter (AEF) for three-phase systems

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Number of Filters	Mounting Type	Package / Case	Frequency - Cutoff or Center [Max]	Frequency - Cutoff or Center [Min]	Function	Utilized IC / Part	Type	Primary Attributes [Min]	Primary Attributes [Max]	Embedded	Supplied Contents
Texas Instruments TPSF12C3DYYR	8 V	16 V	14-SOT-23-THIN	1	Surface Mount	SOT-23-14 Thin SOT-23 Variant	3 MHz	150 kHz
Texas Instruments TPSF12C3QEVM									Electromagnetic Interference (EMI)	TPSF12C3-Q1	Filter	8 V	19 V		Board(s)

Catalog

Common-mode active EMI filter (AEF) for three-phase systems

Key Features

• Functional Safety-CapableDocumentation available to aid functional safety system designVoltage-sense, current-inject active EMI filterOptimized for CISPR 11 and CISPR 32 Class B conducted EMI requirementsLow impedance for common-mode emissions over the applicable EMI frequency range (150 kHz to 3 MHz)50%+ reduction in choke size, weight and costPeak inject current of ±80 mA (typical)Amplifier with unity gain bandwidth of 113 MHzWide supply voltage range of 8 V to 16 VJunction temperature range of –40°C to 150°CSimple external configuration for three-phase AC power systemsIntegrated sensing filter and summing networkLow leakage current at line frequencySimplified compensation networkInherent protection features for robust designWithstands surge of 6 kV (IEC 61000-4-5) with minimal external component countEnable pin for remote ON and OFF controlVDD voltage UVLO protection with hysteresisThermal shutdown protection with hysteresis4.2-mm × 2-mm SOT-23 14-pin (DYY) packageFunctional Safety-CapableDocumentation available to aid functional safety system designVoltage-sense, current-inject active EMI filterOptimized for CISPR 11 and CISPR 32 Class B conducted EMI requirementsLow impedance for common-mode emissions over the applicable EMI frequency range (150 kHz to 3 MHz)50%+ reduction in choke size, weight and costPeak inject current of ±80 mA (typical)Amplifier with unity gain bandwidth of 113 MHzWide supply voltage range of 8 V to 16 VJunction temperature range of –40°C to 150°CSimple external configuration for three-phase AC power systemsIntegrated sensing filter and summing networkLow leakage current at line frequencySimplified compensation networkInherent protection features for robust designWithstands surge of 6 kV (IEC 61000-4-5) with minimal external component countEnable pin for remote ON and OFF controlVDD voltage UVLO protection with hysteresisThermal shutdown protection with hysteresis4.2-mm × 2-mm SOT-23 14-pin (DYY) package

Description

The TPSF12C3 is an active filter IC designed to reduce common-mode (CM) electromagnetic interference (EMI) in three-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 TPSF12C3 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 TPSF12C3 is an active filter IC designed to reduce common-mode (CM) electromagnetic interference (EMI) in three-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 TPSF12C3 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.