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高精度电源设计

电源设计要求:

输入15VAC~25VAC  150Hz;

输出10VAC150Hz  0.05V精度;

功率100W,容性负载

设计方案AC-DC  , DC-DC(BUCK) ,DC-AC .非隔离

求DC-DC方案,主要是精度(用数字电源方案PWM频率设置多少合适,或者是否有专业的MCU推荐)