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TPS43060: TPS43060 不同输入电压,待机电流相差较大

Part Number: TPS43060

使用TPS43060 做的BOOST电路

输入9-17V  输出  24V  5A  频率设定500Khz,电感量3.3uh,原理图参考的是828a

空载待机  9-12.5V    电流60mA

                     13V      电流23mA

                     14V      电流小于1mA

是什么原因导致输入待机电流变化