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TIDM-CAPTOUCHEMCREF

Noise Tolerant Capacitive Touch HMI Reference Design

Design files

TIDM-CAPTOUCHEMCREF

Design files

Overview

The Noise Tolerant Capacitive Touch HMI design (TIDM-CAPTOUCHEMCREF) is a reference design for implementing noise tolerant capacitive touch human-machine interfaces (HMIs).  It integrates TI's MSP430FR2633 microcontroller (MCU) featuring high performance CapTIvate™ touch technology with the TPS7A4533 linear regulator and UCC28910 flyback switcher.  This reference design demonstrates how to design hardware and software that can pass challenging system level tests for conducted RF immunity, electrical fast transient/burst immunity, and electrostatic discharge immunity by applying a three-sided design approach consisting of hardware design techniques, CapTIvate technology peripheral features and software signal processing.

Features
  • MSP430™ MCU with CapTIvate™ touch technology for noise-tolerant capacitive touch sensing
  • IEC 61000-4-6 conducted noise tolerance up to 10Vrms
  • IEC 61000-4-4 electrical fast transient/burst tolerance up to ±4kV
  • IEC 61000-4-2 electrostatic discharge tolerance up to ±8kV contact discharge and ±15kV air discharge
  • Mutual and self capacitance sensing panels with universal AC and 12V DC power supplies for multiple test configurations
Industrial
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Schematic — TIDM-CAPTOUCHEMCREF
TIDRMV7.ZIP (607 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDM-CAPTOUCHEMCREF
TIDRMV8.ZIP (218 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

download Assembly drawing — TIDM-CAPTOUCHEMCREF
TIDRMV9.ZIP (1278 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDM-CAPTOUCHEMCREF
TIDRMW1.ZIP (2362 K)

Files used for 3D models or 2D drawings of IC components

download Gerber file — TIDM-CAPTOUCHEMCREF
TIDCCG3.ZIP (1523 K)

Design file that contains information on physical board layer of design PCB

download PCB layout — TIDM-CAPTOUCHEMCREF
TIDRMW0.ZIP (2407 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430FR2633 — Capacitive Touch MCU with 16 touch IO (64 sensors), 16KB FRAM, 4KB SRAM, 19 IO, 10-bit ADC

Data sheet: PDF | HTML
Digital isolators

ISO7221C — Dual-channel, 1/1, 25-Mbps digital isolator

Data sheet: PDF | HTML
Flyback controllers

UCC28910 — 700V Flyback switcher with constant-voltage constant-current and primary-side control

Data sheet: PDF | HTML
I2C general-purpose I/Os (GPIOs)

TCA9535 — 16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

Data sheet: PDF | HTML

Start development

Software

Technical documentation

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Type Title Date
* User guide Noise Tolerant Capacitive Touch Human Machine Interfaces Design Guide Mar. 09, 2016
User guides CapTIvate Noise Immunity Design Guide Jul. 19, 2016
More literature CapTIvate Technology Guide Jul. 19, 2016
More literature Noise Immunity in Capacitive Touch Designs with MSP MCUs Featuring CapTIvate Technology With Texas Instruments Jul. 19, 2016

Related design resources

Reference designs

REFERENCE DESIGN
TIDM-CAPTIVATE-THERMOSTAT-UI — Capacitive Touch Thermostat UI with MSP MCUs Featuring CapTIvate Technology Reference Design

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