CURRENT-BALANCE CIRCUIT OF PARALLEL POWER DEVICE DRIVING APPARATUS AND METHOD THEREOF

摘要

PURPOSE: A current-balance circuit of a parallel power device driving apparatus and a method thereof are provided to prevent the degradation of response characteristics by eliminating a reactor at a post-stage of a power device and controlling two power devices by means of one controller. CONSTITUTION: A main control unit(20) outputs a control pulse(CP) having a predetermined width to a current equilibrium control unit(18). The current equilibrium control unit(18) calculates a compensation amount for a current equilibrium control on the basis of a difference current by subtracting a second current detection signal from a first current detection signal(I1) from first and second current(I2) detecting units(14a,14b), performs an A/D(Analog/Digital) conversion on the compensation amount to set it a delay time at a dropping point of the control pulse(CP), makes a first control signal into the control pulse(CP) from the main control unit(20) to provide it to a first power device(12a), and delays a rising time of the control pulse(CP) to provide a second control signal to a second power device(12b).