In the current global warming, air conditioning plays a decisive role in white goods. A typical air conditioning system consists of an outdoor unit, an indoor unit and a power supply unit. For the power unit, the Eco Micro features a high isolation voltage optocoupler for isolating PWM and PFCS.

For indoor units, the MCU controls the fan module combined with the photoelectric coupler, and the heater switch combined with the photoelectric three-terminal bidirectional thyristor switch and peripheral devices. Main isolation MCU and related peripherals to ensure circuit reliability.

For outdoor units, the MCU controls the fan and compressor motor systems. Motor control system is an integral part of various household appliances. Each individual module depends on safety and environmental requirements, performance requirements, and, of course, manufacturing costs. Therefore, in the design of household appliances, it is necessary to strengthen the isolation of single chip microcomputer and peripheral equipment to the application circuit, in order to ensure the low noise of the circuit.