A power conversion device comprising: a plurality of power switches (SWa~SWf) configured to be turned on or turned off selectively according to a plurality of driving signals respectively, so as to perform power conversion between an AC power (Va~Vc) and a DC power (Vdc); a processing circuit configured to output a plurality of switching signals respectively; and a plurality of driving circuits (Da~Df) electrically coupled between the processing circuit and a corresponding one of the power switches (SWa~SWf) respectively, so as to output the driving signals according to the switching signals respectively, wherein each of the driving circuits (Da~Df) comprises: a power switch driver configured to output the driving signal according to the corresponding switching signal; and a plurality of current-limiting circuits (180a~180d), wherein each of the current-limiting circuits (180a~180d) has an input terminal electrically coupled to a corresponding one of a plurality of output terminals (N1~N4) of the power switch driver respectively, and a plurality of output terminals of the current-limiting circuits (180a~180d) are electrically coupled to a control terminal of the corresponding power switch (SWa-SWf), wherein the power switch driver selectively outputs the driving signal via the corresponding one of the output terminals (N1~N4) according to a load current (Ia~Ic) passing though the corresponding power switch (SWa-SWf), such that the driving signal is outputted to the control terminal of the power switch (SWa~SWf) via one of the current-limiting circuits (180a~180d), characterized by that each of the current-limiting circuits (180a~180d) comprises: a conducting resistance unit (Ron1~Ron4) electrically coupled between a first terminal and a second terminal; a diode unit (D1~D4); and a cut-off resistance unit (Roff1~Roff4), wherein the cut-off resistance unit (Roff1~Roff4) and the diode unit (D1~D4) are connected in series, and electrically coupled between the first terminal and the second terminal. a plurality of power switches (SWa~SWf) configured to be turned on or turned off selectively according to a plurality of driving signals respectively, so as to perform power conversion between an AC power (Va~Vc) and a DC power (Vdc); a processing circuit configured to output a plurality of switching signals respectively; and a plurality of driving circuits (Da~Df) electrically coupled between the processing circuit and a corresponding one of the power switches (SWa~SWf) respectively, so as to output the driving signals according to the switching signals respectively, wherein each of the driving circuits (Da~Df) comprises: a power switch driver configured to output the driving signal according to the corresponding switching signal; and a plurality of current-limiting circuits (180a~180d), wherein each of the current-limiting circuits (180a~180d) has an input terminal electrically coupled to a corresponding one of a plurality of output terminals (N1~N4) of the power switch driver respectively, and a plurality of output terminals of the current-limiting circuits (180a~180d) are electrically coupled to a control terminal of the corresponding power switch (SWa-SWf), wherein the power switch driver selectively outputs the driving signal via the corresponding one of the output terminals (N1~N4) according to a load current (Ia~Ic) passing though the corresponding power switch (SWa-SWf), such that the driving signal is outputted to the control terminal of the power switch (SWa~SWf) via one of the current-limiting circuits (180a~180d), a power switch driver configured to output the driving signal according to the corresponding switching signal; and a plurality of current-limiting circuits (180a~180d), wherein each of the current-limiting circuits (180a~180d) has an input terminal electrically coupled to a corresponding one of a plurality of output terminals (N1~N4) of the power switch driver respectively, and a plurality of output terminals of the current-limiting circuits (180a~180d) are electrically coupled to a control terminal of the corresponding power switch (SWa-SWf), wherein the power switch driver selectively outputs the driving signal via the corresponding one of the output terminals (N1~N4) according to a load current (Ia~Ic) passing though the corresponding power switch (SWa-SWf), such that the driving signal is outputted to the control terminal of the power switch (SWa~SWf) via one of the current-limiting circuits (180a~180d), characterized by that each of the current-limiting circuits (180a~180d) comprises: a conducting resistance unit (Ron1~Ron4) electrically coupled between a first terminal and a second terminal; a diode unit (D1~D4); and a cut-off resistance unit (Roff1~Roff4), wherein the cut-off resistance unit (Roff1~Roff4) and the diode unit (D1~D4) are connected in series, and electrically coupled between the first terminal and the second terminal. a conducting resistance unit (Ron1~Ron4) electrically coupled between a first terminal and a second terminal; a diode unit (D1~D4); and a cut-off resistance unit (Roff1~Roff4), wherein the cut-off resistance unit (Roff1~Roff4) and the diode unit (D1~D4) are connected in series, and electrically coupled between the first terminal and the second terminal.