The Role of Rectifiers in Modern Telecommunication Systems

Rectifiers, which are essentially AC to DC power converters, play a crucial role in modern telecommunication systems. With the advent of 5G networks and their heavier power demands, the role of rectifiers has become increasingly significant.

Understanding Rectifiers in Telecom Infrastructure

In telecommunication infrastructure, rectifiers are employed wherever AC voltages need to be converted to DC voltages to power telecom cells. AC power is used when IT equipment needs to be powered. When DC telecom devices, such as macrocells or small cells, need to be powered, the AC power is converted to DC with a rectifier. These telecom cells contain antennas that emit network signals.

The Efficiency Challenge

Each conversion from AC to DC can be very inefficient, wasting about 20% of the total power the load consumes. Therefore, reducing the number of conversions needed is beneficial for both the environment and operating costs. Moreover, with the rise of 5G networks, telecom power demands are increasing, making the development of efficient telecom rectifiers a necessity.

The Advent of Class 4 Telecom Rectifiers

Traditional telecom rectifiers typically have an output of 48V DC. However, the advent of 5G networks, which require almost 2x more power than 4G networks, has led to the development of Class 4 telecom rectifiers. These rectifiers can safely output up to 450V DC over cables that have a lighter cable gauge, making them more efficient for handling higher voltages. In addition to reducing energy and cost inefficiencies, Class 4 telecom rectifiers are paving the way for the proliferation of 5G telecom infrastructure.

The Future of Rectifiers in Telecom Industry

The future of rectifiers in the telecom industry lies in enhancing their efficiency, reliability, and cost-effectiveness. This can be achieved through the use of advanced technologies such as GaN devices, bridgeless PFC topologies, or soft-switching techniques. Furthermore, digital solutions with CAN, RS-485, or Bluetooth®/NB IoT can provide scalability and connectivity.

In conclusion, rectifiers play a pivotal role in modern telecommunication systems, powering the devices that emit network signals. The development of efficient rectifiers, such as Class 4 telecom rectifiers, is key to meeting the increasing power demands of advanced networks like 5G. As the telecom industry continues to evolve, so too will the role and technology of rectifiers.