FAN4801MY Integrated Circuits (ICs)

FAN4801MY is a cost-effective high-performance power factor correction (PFC) integrated circuit (IC). It is mainly used in switch-mode power supplies in consumer and industrial applications. This article will discuss its application field, working principle and function blocks.

Application Field

In consumer applications, FAN4801MY \'s working voltage can reach 50Vdc and withstand voltage can reach 600Vdc. It is mainly used in Consumer markets such as power tools, small appliances, consumer electronics and lighting. In industrial applications, FAN4801MY can be used in motor control systems, small power converters, power supplies and other industrial control applications.

Working Principle

The working principle of FAN4801MY is simple. It has built-in control logic, which can automatically adapt to input voltage and load. In order to achieve the correct output current, it can drive the external PFC boost rectifier (BR) to operate in the constant power region.

FAN4801MY is a two-stage PFC circuit. The first stage is a boost rectifier (BR), which is an active power factor correction circuit. This circuit can compensate for reactive power generated by AC loads, thus improving the power factor of the system. The second stage is the low drop-out linear regulator, which is used to control the output voltage.

Function Blocks

FAN4801MY is mainly composed of a control logic module, a signal conditioning circuit, a power modular and a compensation module. The main function of the signal conditioning circuit is to measure the output voltage and current of the system and provide the signal to the control logic module. The power modular can convert electric energy into mechanical energy and output the electronic switches. Finally, the negative feedback mechanism and the compensation module can ensure the stability of the system.

Conclusion

In conclusion, FAN4801MY is a high-performance power factor correction (PFC) integrated circuit (IC). Its application field is mainly in consumer and industrial fields such as power tools, small appliances, consumer electronics and motor control systems. The working principle is simple, and it is composed of four main functions blocks. With the help of FAN4801MY, the power factor of the system can be improved and the output voltage can be stabilized. Therefore, it is widely used in industrial control applications.