Toshiba Discrete Thermostat Solution

Toshiba Discrete Thermostat Solution provides improved reliability and performance in a smaller footprint. The accelerating demand for energy-efficient solutions and a surge in the number of smart home devices will encourage significant growth for smart thermostats. Efficient energy savings, smart controlling, and reduction in per unit energy cost are some underlining parameters that will guide the industry moving forward. It’s essential to reduce power consumption and space requirements and improve operating life to increase the functionality and performance of these devices. Toshiba offers products that meet these critical requirements with the current LDO technologies and photo relays, which have garnered much success in thermostats and other similar designs.

Features

A broad portfolio of products
Keeping low stand-by current to contribute to low power operation
Increasing heat dissipation capabilities with efficient packaging

Optical coupling over an isolated barrier
Offers application notes, reference design, and other material to help with design

Power Supply Circuit Block Diagram

Block Diagram - Toshiba Discrete Thermostat Solution

Various power supply voltages are required for thermostat sensors and high-frequency circuits to increase functionality and reduce power consumption. Choosing an LDO regulator for power supply stabilization and voltage conversion is especially important. The Toshiba TCR3UM and TAR5SB are recommended LDO regulators. Low standby current reduces total system power consumption, and Over-temperature/overcurrent protection provides stability to avoid unexpected system power events.

Interface Circuit Block Diagram

Central heating and forced air systems are standard in Europe and North America. Modern systems for heating, cooling, and ventilation (HVAC) have evolved, and thermostats are an integral part. This system is connected to a motor or something similar. This connection means the thermostat is constantly exposed to motor noise or abnormality risk. Isolation from the system is essential to avoid this risk. Toshiba photo relays are preferred for isolation due to low on-resistance (R_ON) and a wide range of allowable on-current (ION). These devices are available in small packages designed to shrink the footprint and improve design flexibility.