A kind of micro- atomization piece driving circuit comprising: control unit, converter unit, current sense unit, output unit and timing unit. Control unit is to setpoint frequency scanning range and track frequency range. Converter unit connects control unit, carries out frequency variation according to frequency sweeping ranges. Current sense unit connects converter unit, for locking the load current maximum value of converter unit. Output unit connects current sense unit, and exports resonant frequency with load current maximum value. Timing unit connects output unit and control unit, and to count preset interval time, and at the end of counting, transmission tracking signal makes control unit set track frequency range, to correct current frequency values, output unit, which can be exported, should frequency to control unit.一種微霧化片驅動電路，其包括：控制單元、變頻單元、電流偵測單元、輸出單元及計時單元。控制單元是用以設定頻率掃描範圍與追蹤頻率範圍。變頻單元連接控制單元，根據頻率掃描範圍進行頻率變化。電流偵測單元連接變頻單元，用來鎖定變頻單元之負載電流最大值。輸出單元連接電流偵測單元，並以負載電流最大值輸出共振頻率。計時單元連接輸出單元與控制單元，用以計數預設間隔時間，並在計數結束時傳送追蹤訊號至控制單元，使控制單元設定追蹤頻率範圍，以修正目前頻率值，讓輸出單元能夠輸出應有頻率。
