Application of MOSFET in Agricultural Spraying System

Application of MOSFET in Agricultural Spraying System

I. Definition and Type of Agricultural Spraying System

An agricultural automatic spraying system is a modern device that integrates electronics, machinery, sensors, and automated control technology with the principles of agricultural irrigation pest control. It covers irrigation types (such as intelligent sprinkler machines and drip irrigation systems for precise water supply in farmland) and pest control types (such automatic pesticide sprayers and fog machines for disease and pest prevention and control). These systems play an important role in the agricultural production process, improving the efficiency of resource utilization, increasing crop yield and quality, and promoting the development of agriculture towards high efficiency, precision, and intelligence, providing strong support for food security and agricultural sustainable.

II. Application of MOSFET

Application of  MOSFET in driving the motor of the agricultural automatic spraying system

This system can choose YFW5R280AD  MOSFET diodes as a key component in the control circuit of the driving motor, and its parameters are:

- Single N-channel- VDS (V): 60

- VGS (positive V): 20

- Vth (V): 1.7

- V = 4.5V (m times): 12

- VGS = 10V (m times): 11

- ID (): 75

- Technology: Trench

- Package: TO-252

1. Motor drive and control: In terms of driving the, its 75A current carrying capacity can provide stable power for the 3kW centrifugal pump motor, cope with starting impact, and the 60 VDS and suitable Vth can cooperate with the control circuit to accurately adjust the motor speed and torque through PWM signals, achieving precise spraying in different areas, improving the utilization efficiency of water resources and pesticides, and ensuring the quality and safety of agricultural products.

2. Power management and optimization: In the switch power supply, it can convert the 48V lithium battery power supply into 12V, 5V and other voltages for each module. The low on-res reduces power consumption and improves the power conversion efficiency by 5% - 10%. When in standby or low load, the power consumption can be reduced extend the battery life, such as the standby power consumption at night can be reduced to 10% - 20% of normal.

3. protection and fault detection: It can cooperate with the protection circuit, quickly cut off the circuit in case of abnormal conditions such as motor overload, short circuit, and power, such as motor fault current increase or chip overheating (about 150℃) will automatically stop working, and it can also monitor parameters such as onresistance, and send alarms to the control center when abnormal, so as to repair in time and improve the reliability and stability of the system.

III. Points for  MOSFETSelection

1. Electrical Parameters

1. Drain-to-Source Voltage (VDS): Given the complex agricultural environment and power supply, it is advisable to choose  MOSFET diodes with 60V - 100V breakdown voltage for spraying systems commonly powered by 24V 48V DC, to prevent power surge and motor back-emf from causing breakdown and ensure stable system operation.

2. Current Carrying CapacityID): Since a large current is required to start and operate the driving motor, especially for large-scale irrigation or pest control equipment, for 1kW - kW motors, it is recommended to use MOSFET diodes

with a rated current of more than 50A - 100A to ensure reliable driving of motor and avoid starting or running problems caused by insufficient current.

3. Reliability and Safety

1. Reliability Testing and Certification: To ensure the long-term reliability of  MOSFET diodes in spraying systems, they must undergo tests such as high-temperature aging, temperature cycling, humidity, vibration, and salt fog, simulating harsh conditions to inspect performance stability Products that have passed relevant standards such as industrial-grade electronic product certifications should be selected to provide assurance for the stable operation of the system.

2. Protection Isolation Measures: In the system design, protective isolation measures should be taken, such as sealing the  MOSFETdiodes or placing them in protective casings, and waterproof, dustproof, and corrosion-resistant designs to enhance durability; proper electrical isolation should be implemented for high-voltage, high-current circuits to prevent electric leakage short circuits, ensuring the safety of operators and equipment, and guaranteeing the safe operation of agricultural automatic spraying systems.

YFW's  MOSFET products have electrical, performance, and reliability safety advantages, with a rich product line that can be matched according to needs, helping agricultural automatic spraying systems operate efficiently and safely promoting agricultural modernization, and improving production efficiency.