Building better power supplies for 5G base stations
Building better power supplies for 5G base stations Authored by: Alessandro Pevere, and Francesco Di Domenico, both at Infineon Technologies Infineon Technologies -
For historical, practical, and technical reasons, telecom 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.
Compatibility and Installation Voltage Compatibility: 48V is the standard voltage for telecom base stations, so the battery pack's output voltage must align with base station equipment requirements. Modular Design: A modular structure simplifies installation, maintenance, and scalability.
Among various battery technologies, Lithium Iron Phosphate (LiFePO4) batteries stand out as the ideal choice for telecom base station backup power due to their high safety, long lifespan, and excellent thermal stability.
Backup power systems in telecom base stations often operate for extended periods, making thermal management critical. Key suggestions include: Cooling System: Install fans or heat sinks inside the battery pack to ensure efficient heat dissipation.
Telecom power supplies with rectifier (72 kW right, or 90 kW left) and inverter (7.5 kVA) in one system as well as 10" touch display of the MCU 3000 system controller built into the cabinet door.
Voltage regulation: The power supply must provide a stable and regulated output voltage per the requirements of the telecom equipment. High efficiency: Power supplies should be highly efficient to reduce power loss and energy consumption. Efficiencies of at least 90% are typical.

Building better power supplies for 5G base stations Authored by: Alessandro Pevere, and Francesco Di Domenico, both at Infineon Technologies Infineon Technologies -
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Base station power refers to the output power level of base stations, which is defined by specific maximum limits (24 dBm for Local Area base stations and 20 dBm for Home base stations)
Voltage Regulation: The power supply must provide a stable and regulated output voltage according to the requirements of the
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