LNK564PN

The LNK564PN is a cheap, compact, and efficient AC/DC converter switch-mode power supply that features a two stage topology, including a power factor correction (PFC) pre-regulation stage and an integrated switch-mode topology for high-efficiency power delivery. The LNK564PN is available in various output ratings from 0.5A to 1.0A and as a all-in-one solution that combines a EMI filter and a PFC pre-regulation circuit along with a switch-mode power supply.

Application Field of LNK564PN

LNK564PN is widely used in industrial, security, medical, and consumer applications. Its high efficiency, coupled with its compact size, allows it to be used in a variety of applications where space is limited and reliability is paramount. Some of its most popular application fields include industrial PCs, data acquisition systems, embedded systems, medical devices, and consumer electronics.

Working Principle of LNK564PN

The LNK564PN features a two stage topology that begins with a power factor correction (PFC) pre-regulation circuit, which is responsible for taking the input rectified mains and regulating it to avoid power factor degradation. The purpose of this is to reduce the harmonic content of the input current and improve the power factor, ensuring that the switching regulator will receive a clean energy source with minimal stress on the internal components. The second stage of the LNK564PN topology consists of a switch-mode power supply (SMPS), which takes the regulated input from the PFC pre-regulation stage and delivers a regulated output voltage. This SMPS includes an integrated power switch, a control IC, an inductor, and several supporting components, such as capacitors, resistors, and diodes, with an active PWM control. The SMPS section is responsible for controlling the output voltage by varying the duty cycle of the power switch, allowing the voltage to remain at its desired level without the need for a bulky external transformer.

Conclusion

The LNK564PN is a low cost, compact, and efficient AC/DC converter switch-mode power supply that is ideal for industrial, security, medical, and consumer applications. Its two stage topology, including a PFC pre-regulator and a switch-mode power supply, ensures that the output voltage is stabilized and efficiently delivered, making it an attractive solution for space saving applications.