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Capacitive Touch Wall Switch

Overview

Description

Capacitive touch switches are increasingly being adopted in commercial buildings, hotels, and other hospitality environments, addressing the growing demand for stylish, functional, and smart home-compatible solutions. These switches enhance user experience while offering energy efficiency and hygiene benefits.

This capacitive touch wall switch features a high-voltage buck regulator and a Bluetooth®-enabled MCU. Its simple yet effective design interfaces seamlessly with various light and occupancy sensors, as well as motor controls for blinds and curtains.

System Benefits​:

  • Renesas high-voltage (HV) buck regulators are cost-effective, compact, and simple to design.
  • Zero standby power reduces energy costs and environmental impact, with efficient performance from light to full load.
  • Improved EMI by jittering and enhanced gate drive ensures stable, reliable switching performance.
  • Noise-free operation avoids functioning in the audible range for a better user experience.
  • The 32-bit MCU with Bluetooth Low Energy (LE) enables smart features and connected home system controls.

Comparison

Applications

  • Building automation
  • Home automation

Block Diagram

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AS107: WEB Connector Arrow.143 Connector Arrow.139 Connector Arrow.134 AC Power Source.184 Sheet.7 Alternating Current Buck Regulator Buck Regulator Buck Regulator Relay Switch Component block.35 Sheet.13 Sheet.14 Sheet.15 Sheet.16 Inductor Sheet.18 Sheet.19 Sheet.20 12V Relay 12V Relay 12V Relay Buck Regulator Buck Regulator Buck Regulator House Light House Light House Light Diode - LED Sheet.68 Sheet.69 Sheet.70 Sheet.71 Sheet.72 Darlington.651 Sheet.74 Darlington.254 Connector Arrow Light Sensor Light Sensor Light Sensor Status LEDs Block.120 Status LEDs Status LEDs Status LEDs Sheet.108 Sheet.109 Sheet.110 Sheet.111 Touch Key Sheet.113 Sheet.114 Sheet.115 Sheet.116 Sheet.117 Sheet.118 Sheet.119 Sheet.120 Sheet.121 Connector Arrow.122 Connector Arrow.123 Connected signals arrow 12V 12V 12V Connected signals arrow.128 Connector Arrow.130 Connector dotted arrow Line Bi-directional Dotted 3.3V 3.3V 3.3V Connector dotted double arrow Sensing Sheet.80 Label text 10pt.1741 ( ( Label text 10pt.1742 ( ( Label text 10pt.1743 ( ( Sheet.84 Label text 10pt.1741 ( ( Label text 10pt.1742 ( ( Label text 10pt.1743 ( ( Optional PIR Sensor for Occupancy Sensing Optional PIR Sensor for Occupancy Sensing Optional PIR Sensor for Occupancy Sensing Cap Touch (6-8 Buttons) Cap Touch (6-8 Buttons) Cap Touch (6-8 Buttons) Wireless Smart Blind Controller Wireless Smart Blind Controller Wireless Smart Blind Controller Optional Blind Control for Smart Home Optional Blind Control for Smart Home Optional Blind Control for Smart Home Connector dotted double arrow.253 Ground - Earth Sheet.255 Sheet.256 Sheet.257 Sheet.258 Ground - Earth.259 Sheet.260 Sheet.261 Sheet.262 Sheet.263 110/230V AC from Main 110/230V AC from Main 110/230V AC from Main Connector Line Connector Line.266 AS107 AS107 AS107 Connector Arrow.126 Optocoupler Optocoupler Optocoupler Sheet.268 MCU MCU MCU GPIO GPIO GPIO I2C I2C I2C GPIO GPIO GPIO CTSU CTSU CTSU GPIO GPIO GPIO Bluetooth Bluetooth Bluetooth
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