FRMOS (Fast Recovery Metal-Oxide-Semiconductor Field-Effect Transistor) is a type of power semiconductor device that integrates high voltage tolerance, fast switching speed, and low reverse recovery charge. These features make it an ideal choice for various applications requiring efficient power conversion.
Wayon FRMOS applies advanced process platform and optimizes the device internal structure, which exhibits excellent performance in high voltage application scenario. In comparison with traditional MOSFET, Wayon FRMOS has faster charge release speed during reverse recovery phase, which can effectively reduce switching losses and EMI, thereby enhancing the overall system performance.
FRMOSFET Key Features
1、High Voltage Tolerance
FRMOS devices are designed to withstand high voltages, making them suitable for applications in high-voltage environments. Whether it is used as switching device in power transmission systems or as core component in high voltage power supply equipment, it can operate stably to ensure circuit safety, effectively avoiding device damage caused by excessively high voltage.
2、Fast Recovery Characteristics
The fast recovery feature allows FRMOS to quickly switch from the conducting state to the off state, reducing switching losses and improving efficiency in high frequency switch application like switch power supply, inverters, and etc.
3、Low On-Resistance
The planar structure of FRMOS results in lower on-resistance, which minimizes conduction loss during conducting state. It not only improves the circuit efficiency, but also reduces the device heat generation during operation and extends its service life. It is especially suitable for high current applications, such as electric vehicle drive circuit, industrial motor control systems, ensuring circuit stability and reliability.
4、Good Thermal Stability
FRMOS can maintain stable performance under high temperature, high current, high voltage conditions, ensuring reliable operations in various environments such as summer, winter and reducing maintenance cost resulted from performance instability due to temperature change.
5、Easy to Drive
FRMOS requires simpler drive chip or circuit design, which makes it easy for engineer to do circuit design and debug, reducing development cost and cycle and improving product launching speed especially suitable for cost sensitive market applications.
Switching Power Supplies(LLC Topology)
FRMOS Typical Application 1
In switching power supply, FRMOS as core switch device, can support efficient power conversion.
Fast switching-on and off converts the input DC voltage to high frequency pulse signal. The post steps like voltage reduction through transformer, rectification and filtering will eventually output stable DC voltage.
Its high voltage endurance and low on-resistance characteristics can ensure stable operation under high voltage, high current output condition. It is widely used in motor drive, middle small power PC, and etc.
Fig 1: FRMOS in LLC topology
BLDC Motor Drive
FRMOS Typical Application 2
FRMOS is used to control motor speed and torque in motor drive application.
By precisely controlling the switching frequency and duty cycle, it can achieve stepless speed regulation of the motor, thereby improving production efficiency and product quality.
Its low on-resistance and excellent thermal stability enables it to operate stably under long time high load work conditions. It is suitable for speed control in various industrial automation equipment, such as fans, water pumps, conveyor belts. It is widely used in small home appliance and white goods, such as high-speed hair dryers, air conditioners, refrigerators, and dishwashers.
FRMOS Advantages in Motor Control Application:
● Competitive cost of high performance
● Excellent EMI with flexible dv/dt and softer reverse recovery current
● High switching frequency performance, reach up to 50HKz
● Reliable avalanche breakdown resistance
● Suitable for BLDC motors below 200W
Fig 2: FRMOS in BLDC Application
WAYON FRMOS MP Part Numbers
