Application of YFW MOS in Hair Dryers

Application of YFW MOS in Hair Dryers

The high-speed hair dryer is an innovative care tool that integrates multi-domain technologies. It relies on a high-speed motor to generate a powerful airflow, significantly shortening the drying time. According to usage scenario, it is divided into household type to meet daily needs; professional salon type with large power and fine regulation; portable travel type for small and convenient carrying.-speed hair dryers of different types provide efficient and convenient hair drying and styling experience for people in their respective scenarios.

Application Status of MOS

DC-phase brushless motors are often used in high-speed hair dryers, and super-junction high-voltage MOSFETs have key applications in full- DC motor drive circuits.

Parameters and Characteristics

YFW3N150PF 3A 1500V. Single N-, 650V saturation drain-source voltage for high voltage, 30V maximum gate-source voltage for stable signal, 3.5V threshold voltage for precise triggering, 160mΩ drain-source resistance for efficient transmission, 20A continuous drain current and SJ_Multi-PI technology to enhance device performance.

YFW3N150PF 3A 1500V: The single polarity N-type diodes produced a strong rated drain-source voltage of 650V, a stable signal with a maximum gate-source voltage of ±30V, a precise trigger voltage of 3.5V, a 75mΩ drain-source resistance drop loss when VGS = 10V, and a rated drain of 47A suitable for high-power motors. The SJ_Multi-EPI technology combined with the TO247 package takes into account heat and stability.

1. Accurate control of motor drive: Using the technology, the motor speed is controlled by adjusting the PWM duty cycle. Low-speed reduces the duty cycle to output a gentle wind; high-speed gear increases the duty cycle to produce a strong wind.

2. Intelligent temperature control of heating: MOS controls the on-off of the heating element circuit and can also adjust the heating power according to the feedback of the temperature sensor to keep the temperature of the wind suitable.

3. Efficient control of negative ion release: Control the circuit of the negative ion generator, turn on the conduction to release negative ions, and off the current. It can also adjust the output according to the working mode.

Key Points for MOS Type Selection

1. Electrical Parameters:

• Vol resistance: Considering the voltage fluctuation, the MOSFET drain-source breakdown voltage (Vds) should be 30% - 50% higher than the working voltage to ensure that it can withstand voltage spikes.

• Current: Since the current of the motor and heating element changes dynamically and has a large starting impact, drain current (Id) should take into account their rated and maximum current, leaving a margin of 40% - 60%.

• On- resistance: To reduce power consumption and heat, the on-state resistance should be below 50mΩ at room temperature. When the heat dissipation is poor, is necessary to select a low-value resistance.

2. Performance Characteristics:

• Switching speed: Since the wind speed, temperature, etc., are regulated by the technology, the MOSFET is required to switch fast and stably. Fast switching can reduce loss and improve response, but it should be matched with the circuit parameters to suppress electromagnetic interference.

• Impact resistance: In view of the fact that the hair dryer is faced with the fluctuation of municipal electricity and static electricity,., the MOSFET needs to have a strong avalanche energy level and anti-static ability to ensure stable operation.

• Temperature adaptability: Since the hair generates heat during operation and there is a difference in ambient temperature, the MOSFET should be able to work stably from -20℃ to 125, with small parameter drift at high temperature and, if necessary, a heat sink can be added to assist heat dissipation.

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3. Reliability and Safety:

• Rigorous Testing: MOSFETs undergo high-temperature aging, temperature cycling, humidity,, salt spray, and other tests before leaving the factory to ensure long-term stable operation.

• Protection and Isolation: In circuit design, MOSFETs sealed or protected with cases to prevent water, dust, and corrosion, and electrical isolation is maintained for high-voltage, high-current circuits to ensure the safety of and users.

YFW's superjunction high-voltage MOSFETs play an irreplaceable role in critical aspects of high-speed hairdryers such as motor driving, heating element control, and negative ion release, significantly enhancing their performance, quality, and intelligent level, and providing people with a better haird experience. With the continuous development of semiconductor technology, the performance of MOSFETs will inevitably continue to improve, and their application prospects in high-speed hairdryers other related electrical equipment will be even broader, injecting endless momentum into the vigorous development of the hairdressing appliance industry.