The telecommunications sector has become an important element of modern society and instantaneous global communication. Whether for a phone call, text message, or web command, telecom equipment ensures reliable connections. The power supply operating behind the scenes is an essential component that is rarely acknowledged. This article focuses on the Analog Devices MAX15258 , which is designed to accommodate up to two MOSFET drivers and four external MOSFETs in single-phase or dual-phase boost/inverting- buck-boost configurations. It is possible to combine two devices for triple-phase or quad-phase operation, achieving higher output power and efficiency levels. Meeting the need of increased power demand The power demand within the telecommunications industry has grown over time, driven by developments in technology, heightened network traffic, and the expansion of telecommunications infrastructure. The transition from third generation (3G) to fourth generation (4G) and fifth generation (5G) networks has led to advanced and high power equipment.
■ Accommodate wider signal bandwidths and higher power levels, as well as providing linear amplification to prevent distortion of high-data-rate signals. ■ Operate efficiently to minimize power consumption and heat generation, especially for battery-powered devices and remote small cells. ■ Include a lightweight, compact form factor that can fit into small enclosures, such as small cell sites and user equipment. ■ Incorporate advanced materials and technologies such as semiconductor devices made of Gallium Nitride (GaN) and Silicon Carbide (SiC) to provide increased power density, enhanced performance, and increased operating frequencies.
The deployment of 5G technology has had a significant impact on the power requirements of base stations and cell towers. Base stations, particularly those in urban areas, require higher power levels to support the increased number of antennas and radio units needed for massive MIMO (Multiple Input, Multiple Output) configurations and beamforming. Redundancy is another crucial factor. Power supplies must be designed with redundancy in mind, often including backup power sources like batteries or generators to ensure uninterrupted operation in case of power outages. Compared to previous generations of wireless networks, the deployment of 5G mobile technology introduces several changes to power device requirements. For 5G to deliver on its promise of reliable, high speed, and low latency communication, some criteria must be addressed.
Power conversion requirements
For historical, practical, and technical reasons, telecom
Power amplifier requirements
systems typically utilize a -48 V DC power supply. In the event of a grid malfunction or other emergency, telecommunications networks require dependable backup power sources. Commonly used for reserve power, lead-acid batteries can also operate at -48 V DC . Using the same voltage for both
■ Support a broad spectrum of frequency bands, including sub- 6 GHz and mmWave (millimeter wave) frequencies, which present unique challenges for signal propagation.
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