Customized Power Supply Box Low Voltage Electrical Cabinet for
Customized Power Supply Box Low Voltage Electrical Cabinet for Building, Find Details and Price about Customized Power Supply Box Power Supply Box from Customized Power Supply Box
Customized Power Supply Box Low Voltage Electrical Cabinet for Building, Find Details and Price about Customized Power Supply Box Power Supply Box from Customized Power Supply Box
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Communications infrastructure equipment employs a variety of power system components. Power factor corrected (PFC) AC/DC power supplies with load sharing and redundancy (N+1) at the front-end feed dense, high efficiency DC/DC modules and point-of-load converters on the back-end.
Low profile power supply design usually includes printed circuit board (planar) power transformers and output inductors and surface mount input and output capacitors. Multiple output power supplies are often implemented with a multi-output flyback converter.
A preferred power supply architecture for DSL applications is illustrated in Fig. 2. A push-pull converter is used to convert the 48V input voltage to +/-12V and to provide electrical isolation. Synchronous buck converters powered off of the +12V rail generate various low-voltage outputs.
VoIP converters generally require power supply circuit topologies that are performance-driven (highly efficient with minimal conducted line current), easy to use and cost-effective with a small footprint and low profile. A number of topologies can be designed to meet these requirements to some degree.