新聞中心

Precision Frequency Tracking, Optimized Atomization Performance

In atomization applications such as medical devices, humidifiers, and ultrasonic aroma diffusers, the stability of the driving frequency directly affects mist output efficiency and consistency. However, the optimal misting frequency of the atomizing transducer can shift due to device variations, temperature changes, and load conditions, making it difficult for the system to maintain ideal operating performance over time.

Traditional fixed-frequency PWM driving methods cannot continuously match the optimal resonant frequency of the atomizing element, which may lead to unstable mist output or reduced efficiency. Therefore, atomization systems typically incorporate a “frequency tracking” mechanism that dynamically adjusts the driving frequency in real time, allowing the system to approach the optimal misting resonance point.

During the frequency tracking process, the MCU uses an ADC to sample the atomization feedback signal in real time and finely tunes the PWM frequency accordingly. Since the deviation between the optimal resonance point and the current operating frequency is often only tens to hundreds of hertz, the frequency resolution and adjustment precision of the PWM become critical factors in overall system performance.

Megawin Technology MG32F02V032 series (MCU) supports high-resolution, fine-step PWM frequency adjustment and offers flexible peripheral configurations. It can achieve stable locking near the optimal resonance point, effectively improving atomization efficiency and mist output consistency, making it suitable for a wide range of high-performance atomization control applications.

Precision Control Solution for High-Quality Atomization Applications

To meet the stringent requirements of atomization applications in terms of frequency accuracy, system stability, and power consumption control, the MG32F02V032 leverages comprehensive and highly integrated hardware resources to help customers easily develop high-quality atomization products, achieving enhancements in both performance and design.

Precise Frequency Tracking for More Stable Atomization Performance
The MG32F02V032 integrates a 12-bit, 1.0 Msps SAR ADC that supports sampling of the internal voltage reference (VBUF). During the frequency-tracking process, it can accurately and stably detect circuit voltage variations, effectively preventing errors caused by VDD fluctuations. This provides a reliable basis for PWM frequency adjustment, ensuring a consistent, fine, and stable atomization process.

NCO Digital Oscillator for Fine PWM Control
Featuring a unique NCO (Numerically Controlled Oscillator) design, the MG32F02V032 supports a clock source of up to 96 MHz for PWM output. High-resolution frequency control can be achieved without adjusting the main system clock. The minimum PWM frequency adjustment step is as small as 30–50 Hz, and fine-tuning does not affect the operation of other peripherals. When paired with the ADC, it enables highly accurate frequency tracking, significantly improving atomization efficiency and overall user experience.

Ultra-Low Power Consumption, Optimized for Battery Applications
Under VDD = 3.3 V conditions, the MG32F02V032 features a sleep current as low as 1.25 µA. This makes it particularly suitable for battery-powered atomization products, effectively extending battery life and enhancing overall product competitiveness.

Rich Peripheral Set for Easy Product Differentiation
The MG32F02V032 integrates multiple distinctive hardware features, including an ASB bus capable of directly driving ARGB LED strips and a CCL (Configurable Custom Logic) module for flexible logic control signal output. These features allow customers to quickly implement personalized functions such as lighting effects and control logic in atomization products, creating more distinctive and recognizable designs.

One-Stop Support to Accelerate Time-to-Market
In addition to its robust hardware performance, the MG32F02V032 also offers excellent cost-effectiveness. Megawin provides complete atomization application demo hardware and software resources to assist customers in rapid integration and shortened development cycles. Even development teams entering the atomization field for the first time can efficiently complete product design and successfully bring products to market.

Solution Block

Other MCU options

In addition to the MG32F02V032 series, Megawin Technology also offers multiple MCU options tailored for different atomization application requirements, enabling customers to flexibly balance power consumption, performance, and cost.

For applications that demand ultra-low power consumption, Megawin Technology has introduced the MG32L003 series. Under VDD = 3.3 V, its sleep current is only 890 nA. Even when operating at full speed at 24 MHz, the operating current is just 1.8 mA. This makes it one of the lowest-power MCUs currently offered by Megawin Technology, making it especially suitable for battery-powered atomization products with stringent battery-life requirements.

The 8051-based MG82F6D17 series, while not matching the overall computing performance of the MG32F02V032 series, delivers comparable performance in atomization frequency-tracking control. It also supports a wide operating voltage range of 1.8 V to 5.5 V, providing high design flexibility and strong compatibility. As a result, it is a highly cost-effective choice that balances performance and cost.

Through its diversified MCU product portfolio, A Technology is able to meet the design requirements of atomization products across different tiers, helping customers quickly select suitable solutions, smoothly complete product integration, and achieve mass production.

Summary (MCU Selection Comparison)

~ From high performance to ultra-low power, Megawin Technology offers a versatile MCU portfolio to support the design needs of atomization products at every level. ~

*Also, you can browse the product pages on Megawin Technology's official website:

MG32F0V032 (M0): https://www.megawin.com.tw/product/MG32F02V032

MG32L003(M0+): https://www.megawin.com.tw/products-sub/Cortex-M0plus-Low_Power_Line

MG82F6D17 (8051): https://www.megawin.com.tw/zh-TW/product/MG82F6D17

Feel free to contact one of our dealers, or request one of our sales representatives (sales@megawin.com.tw)。

Megawin Technology Co., Ltd.

www.megawin.com.tw

*TEL: +886-3-560-1501

*email: sales@megawin.com.tw

To become
world class
MCU vendors targeted

Products information

Mar 05,2026

MCU Selection Guide丨A Technology Precision Frequency Tracking, Efficient Atomization Control Solution

新聞中心