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Varied power supplies needed

机译：需要各种电源

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摘要

Communications infrastructure equipment employs a variety of power system components. Power-factor-corrected 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. A power-efficient design requires both the higher-voltage analog circuits and multiple tightly regulated low-voltage supplies for the high-speed digital communications ASICs and FPGAs. More recently, diverse power supply requirements coupled with a volatile telecommunications market have forced equipment manufacturers to not only cut costs but also to provide more efficient and reliable power solutions. The challenging business environment has spawned new dis-tributed-voltage bus standards, such as the recent +12-volt intermediate-bus architecture. The deployment of low-cost unregulated (open-loop) bricks to convert from the -48-V bus to a standard + 12-V intermediate bus has allowed new low-cost point-of-load. (POL) modules to be used.
机译：通信基础设施设备使用各种电源系统组件。功率因数校正的交流/直流电源在前端具有负载共享和冗余（N + 1），可为后端的密集，高效DC / DC模块和负载点转换器供电。节能设计需要用于高速数字通信ASIC和FPGA的高压模拟电路和多个严格调节的低压电源。最近，多样化的电源要求以及瞬息万变的电信市场迫使设备制造商不仅削减成本，而且提供更有效，更可靠的电源解决方案。充满挑战的商业环境催生了新的分布式电压总线标准，例如最近的+12伏中间总线体系结构。低成本无管制（开环）砖的部署将其从-48V总线转换为标准+ 12V中间总线，从而实现了新的低成本负载点。 （POL）模块要使用。

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