Specifications - Texas Instruments TPSF12C1EVM-FILTER User Manual

Evaluation Module Overview
1 Evaluation Module Overview
1.1 Introduction
The TPSF12C1EVM-FILTER
of the TPSF12C1 active filter IC. The EVM helps to improve the CM EMI signature in single-phase AC power
systems.
The TPSF12C1 provides a low shunt impedance path for CM noise in the frequency range of interest for EMI
measurement and helps to meet prescribed limits for 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
Enabling up to 30 dB of CM noise reduction at the lower end of specified frequency ranges (for example, 100
kHz to 3 MHz) significantly reduces the footprint, volume, weight and cost of the CM filter implementation,
especially the CM choke components that are designed to attenuate lower-order harmonics – and hence are
large size. The TPSF12C1 senses the high-frequency noise on each power line using two Y-rated sense
capacitors and injects a noise-canceling current back into the power lines using a Y-rated inject capacitor. The
GND terminal of the EVM requires a direct, low-inductance connection to the chassis ground or Earth terminal of
the filter circuit.
1.2 Kit Contents
• A complete filter board (EVM) rated at 10 A, including the TPSF12C1 active EMI filter IC
• EVM Disclaimer Read Me
• High Voltage Read Me

1.3 Specifications

Table 1-1 lists the EVM specifications. The input accepts 120 VAC or 240 VAC standard single-phase mains
supply voltages. V = 12 V, unless otherwise indicated.
VDD
PARAMETER
INPUT CHARACTERISTICS – EMI FILTER BOARD
Filter input voltage, V
AC
Filter rated current, I
AC
INPUT CHARACTERISTICS – TPSF12C1 AEF IC
(1)
VDD supply voltage, V
VDD
VDD UVLO turn-on threshold, V
VDD UVLO turn-off threshold, V
VDD supply current, enabled, I
VDD supply current, disabled, I
OUTPUT CHARACTERISTICS – TPSF12C1 AEF IC
(2)
Inject voltage, V
INJ
Inject current, I
INJ
SYSTEM CHARACTERISTICS
(3)
Common-mode EMI reduction
Ambient temperature, T
A
IC junction temperature, T
J
(1) The nominal VDD supply voltage (relative to chassis GND) of the TPSF12C1 is 12 V.
(2) Verify that the INJ pin voltage swing is between the prescribed limits to avoid saturation and clipping.
(3) The expected EMI reduction with this EVM is up to 30 dB (with the TPSF12C1 enabled vs. disabled) when swept from 100 kHz
to 3 MHz. This performance metric can change based on the VDD supply voltage, passive filter component values, active circuit
compensation and damping component values, ambient temperature, and other parameters.
2 Active EMI Filter Evaluation Module for Single-Phase AC Power Systems
evaluation module (EVM) is designed to conveniently evaluate the performance
Table 1-1. Electrical Performance Specifications
V rising
VDD(on) VDD
V falling
VDD(off) VDD
EN open or tied high
VDD(on)
EN tied to GND
VDD(off)
V = 8 V to 16 V
VDD
150 kHz to 1 MHz
Copyright © 2023 Texas Instruments Incorporated
CONDITIONS
SLVUCQ2A – JULY 2023 – REVISED JULY 2023
www.ti.com
MIN TYP MAX UNIT
85 240 265 V
RMS
10 A
RMS
8 12 16
7.7 V
6.7
12.5 mA
50 µA
2.5 V – 2 V
VDD
–80 80 mA
20 dB
–40 85
°C
–40 150
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