In recent years, the market for Brushless DC (BLDC) motors has been expanding steadily, with significant growth potential expected to continue in the coming years. This growth is primarily due to the numerous advantages offered by BLDC motors, including high energy efficiency, low power consumption, high torque, low noise, a long lifespan, and a quick response. As a result, BLDC motors are widely used across various sectors. In particular, industries such as home appliances, fans, pumps, power tools, robotics, and electric vehicles have made BLDC motors the mainstream choice. With the push for smarter home appliances, frequency conversion technologies, and technological upgrades, the use of BLDC motors in home appliances and HVAC systems has increased significantly. Additionally, government initiatives promoting low-carbon and energy-saving policies are expected to further expand the applications of BLDC motors in industrial markets.

■ Nuvoton's Inverter MCU

Nuvoton Technology has over 20 years of expertise in the field of variable frequency control, with a wealth of technological know-how and production experience. We have developed a series of MCUs and solutions specifically designed for variable frequency control. We are committed to providing our customers with faster product development, enhanced safety guarantees, and more cost-effective variable frequency control solutions.

■ Introduction to AM32 Core Products

■ General ARM-based Products

New Product Specifications

To meet the needs of the home air conditioning and heat pump markets, Nuvoton has introduced a new M4-based product, offering a solution that enables a single MCU to control dual motors and high-frequency PFC (Power Factor Correction).

Motor Drive Solutions

Nuvoton has developed solutions tailored to various customer applications, offering options for high-end, mid-end, and entry-level models. These solutions are designed to meet the needs of both traditional home appliance markets and emerging applications.

Advantages

• Single-chip dual motor + PFC solution.
• MCU processing power supports both dual motor drive and high-frequency PFC control simultaneously.
• Compatible with both single-resistor and three-resistor sampling detection methods.
• Built-in differential amplifiers and comparators reduce the need for external components, lowering BOM costs.
• Strong core control algorithms, including lead angle control, torque control, field weakening control, and anti-typhoon start-up algorithms.
• Multiple safety protection mechanisms, including dead-time reparation, stall protection, phase loss protection, overvoltage protection, overcurrent protection, and undervoltage protection.

Reference Solutions

Solution 1: Dual motor + software PFC solution for home appliances.

Solution 2: High-power three-phase interleaved PFC solution.

Solution 3: Low-voltage single motor control solution.