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实时调压电源设计

Other Parts Discussed in Thread: TPS2834, LM25085

设计一款实时程控电压源,输入15V-30V,输出3V-15V,电流3A.通过MCU控制输出电压从最小到最大可线性增长.现尝试采用可编程数字电位器控制非隔离DCDC转换电路的FB端反馈.或PWM控制FET驱动器如TPS2834.还有别的方法或者其他芯片选择吗?求教!