A driving module, comprising: a transformer, comprising: a primary side (S_p), comprising a first input terminal (T_in1), a second input terminal (T_in2), and a center terminal (T_c) coupled to a first predetermined voltage, wherein the primary side (S_p) is center tapped at the center terminal (T_c); and a secondary side (S_s); and at least one driver (D_1, D_2), coupled to a second predetermined voltage (V_cc), configured to receive at least one input signal (INS_1, INS_2), to provide a first input current (I_in1) flowing from the first input terminal (T_in1) to the center terminal (T_c) according to the input signal (INS_1, INS_2), and to provide a second input current (I_in2) flowing from the second input terminal (T_in2) to the center terminal according to the input signal (INS_1, INS_2); wherein the primary side (S_p) generates an input voltage (V_in) based on the first input current (I_in1) and the second input current (I_in2), wherein the secondary side (S_s) generates an output voltage (V_out) based on the input voltage (V_in); wherein the second predetermined voltage (V_cc) is higher than the first predetermined voltage; characterized in that the driving module further comprises: a DC to DC voltage converting circuit, coupled between the second predetermined voltage (V_cc) and the driver (D_1; D_2), configured to convert the second predetermined voltage (V_cc) into a required converted voltage for generating a required voltage amplitude swing of the output voltage (V_out), wherein the DC to DC voltage converting circuit can convert the second predetermined voltage (V_cc) into different converted voltages for generating different voltage amplitude swings of the output voltage (V_out), respectively, and the required converted voltage is one of the different converted voltages. a transformer, comprising: a primary side (S_p), comprising a first input terminal (T_in1), a second input terminal (T_in2), and a center terminal (T_c) coupled to a first predetermined voltage, wherein the primary side (S_p) is center tapped at the center terminal (T_c); and a secondary side (S_s); and a primary side (S_p), comprising a first input terminal (T_in1), a second input terminal (T_in2), and a center terminal (T_c) coupled to a first predetermined voltage, wherein the primary side (S_p) is center tapped at the center terminal (T_c); and a secondary side (S_s); and at least one driver (D_1, D_2), coupled to a second predetermined voltage (V_cc), configured to receive at least one input signal (INS_1, INS_2), to provide a first input current (I_in1) flowing from the first input terminal (T_in1) to the center terminal (T_c) according to the input signal (INS_1, INS_2), and to provide a second input current (I_in2) flowing from the second input terminal (T_in2) to the center terminal according to the input signal (INS_1, INS_2); wherein the primary side (S_p) generates an input voltage (V_in) based on the first input current (I_in1) and the second input current (I_in2), wherein the secondary side (S_s) generates an output voltage (V_out) based on the input voltage (V_in); wherein the second predetermined voltage (V_cc) is higher than the first predetermined voltage; characterized in that the driving module further comprises: a DC to DC voltage converting circuit, coupled between the second predetermined voltage (V_cc) and the driver (D_1; D_2), configured to convert the second predetermined voltage (V_cc) into a required converted voltage for generating a required voltage amplitude swing of the output voltage (V_out), wherein the DC to DC voltage converting circuit can convert the second predetermined voltage (V_cc) into different converted voltages for generating different voltage amplitude swings of the output voltage (V_out), respectively, and the required converted voltage is one of the different converted voltages.