Micrel MIC22950 10A降压开关电源稳压方案

Micrel 公司的MIC22950 是高效率10A开关电源同步降压稳压器,开关频率从400kHz 到 2MHz可编程, 2MHz开关频率时宽负载范围内的效率超过95%. MIC22950工作电压2.6V到5.5V,可调整输出电压到0.7V,输出电流高达10A,主要用于高功率密度点负载转换,基站,服务器和路由器,蓝光播放器,DVD刻录机,计算机外设以及FPGA, DSP和低压ASIC电源.本文介绍MIC22950主要特性, 功能方框图, 10A 同步 DC/DC转换器以及应用电路图和材料清单.

The Micrel MIC22950 is a high efficiency 10A integrated switch synchronous buck (step-down) regulator. The MIC22950 switching frequency is programmable from 400kHz to 2MHz, allowing the customer to optimize designing either for efficiency or for the smallest footprint. The MIC22950 achieves over 95% efficiency while still switching at 2MHz over a broad load range.

The ultra-high speed control loop keeps the output voltage within regulation, even under extreme transient load swings commonly found in FPGAs and low voltage ASICs.
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