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TPS54424和TPS54824空载功耗很高

Other Parts Discussed in Thread: TPS54824, TPS54424

在这个电路中,时钟频率是1M,空载测得时候发现两个电路都有有30mA的电流,用仿真的时候功耗只有80mW左右,TPS54424电感是3.3uH,TPS54824电感是6.8uH