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Noise-resistant capacitive touch HMI reference design

TIDM-CAPTOUCHEMCREF

Overview

The Noise Tolerant Capacitive Touch HMI Design (TIDM-CAPTOUCHEMCREF) is a reference design for implementing a noise tolerant capacitive touch human machine interface (HMI). It integrates TI's MSP430FR2633 microcontroller (MCU) with high-performance CapTIvate™ touch technology and the TPS7A4533 linear regulator and UCC28910 flyback switch. This reference design demonstrates how a design that can pass challenging conducted RF immunity, electrical fast transient/burst immunity can be designed using a trinity design approach that includes hardware design techniques, CapTIvate technology peripheral functionality, and software signal technology. Hardware and software for system-level testing of electrostatic discharge immunity and electrostatic discharge immunity.

characteristic

● MSP430™ MCU with CapTIvate™ touch technology enables noise-resistant capacitive touch sensing
● Complies with IEC 61000-4-6 standard for conducted noise immunity up to 10Vrms
● Meets IEC 61000-4-4 standard for electrical fast transient/burst immunity up to ±4kV
● Complies with IEC 61000-4-2 standard for electrostatic discharge immunity up to ±8kV contact discharge and ±15kV air discharge
● Manual and automatic capacitive sensing panels with universal AC and 12V DC power supplies for a variety of test configurations

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Blockdiagram

Design Files

Documentation

Noise Tolerant Capacitive Touch HMIs Design Guide

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-05-11 09:08:52

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