LNK4024D-TL

AC DC Converters, Offline Switchers: LNK4024D-TL Application Field and Working Principle

The LNK4024D-TL is an AC-DC converter, which is a type of offline switch. It is a high-efficiency, cost-effective and compact solution for an offline switcher application, providing high accuracy, complete safety protection and industry leading performance. This article will discuss the LNK4024D-TL application field and its working principle.

Application Field

LNK4024D-TL is suitable for external adapter, charger, integrated power system, desktop power, industrial control power and other applications. This type of AC-DC converter is widely used in various fields, such as household appliances, automated equipment, power tools, LED lighting, computer peripherals, automotive Electronics, medical and industrial fields, etc. It can be used in multi-output applications with a power output ranging from 20W to 120W.

Working Principle

LNK4024D-TL employs synchronous rectification technology to provide high efficiency, wider input voltage range, low standby power and high power factor performance. It is an offline buck converter based on a CMOS-gated PWM controller. All necessary functions are integrated in one IC, including overvoltage protection, thermal shutdown and cycle-by-cycle current limit. This feature provides complete reliability and safety for end products.

The LNK4024D-TL integrated full bridge rectifier and synchronous rectifier with low voltage drop, high rectification efficiency and small size. A primary side control supports an input overvoltage protection, auto-recovery type and loop compensation to ensure reliable, low cost and optimum performance over the total variation range of input voltage, output current and temperature conditions. Two opto-couplers meet the requirements of EMC applications. The cycle-by-cycle current limit protection and hiccup mode combined with a fixed frequency PWM operation reduces parts count, simplifies design complexity, reduces EMI noise filter cost and simplifies design flow.

LNK4024D-TL is an integrated offline buck regulator with excellent performance in terms of power, load transient and system design. The device can reach 90% peak efficiency, 40% power density (W/cm²) and reduce the power reduction of components. This makes it suitable for applications where cost, size and safety are critical. The optimized internal layout of LNK4024D-TL also reduces EMI.

Summary

To sum up, LNK4024D-TL is a high efficiency and cost-effective AC-DC converter suitable for a wide range of applications. Leveraging its features such as overvoltage protection, thermal shutdown and cycle-by-cycle current limit, this device provides reliable and safe performance for end products. It is an integrated offline buck regulator with excellent performance in terms of power, load transient and system design and can offer 90% peak efficiency, 40% power density (W/cm²) and reduce the power reduction of components.