Power cycle test equipment

摘要

PROBLEM TO BE SOLVED: To achieve sharp current rise in ON operation of a constant current control circuit and to surely suppress overshoot due to the sharp current rise in a power cycle testing apparatus configured by interposing the constant current control circuit between a DC power supply circuit and a power semiconductor (object to be tested) and capable of applying an ON/OFF operation command to the constant current control circuit in an output ON state of the DC power supply circuit.;SOLUTION: A DC power supply circuit 10 capable of setting a current value and a constant current control circuit 20 capable of setting a current value are connected in series between output terminals T1, T2 to which a power semiconductor 50 to be an object to be tested is to be connected. An ON/OFF operation command to the constant current control circuit 20 is applied by an output ON state of the DC power supply circuit 10. A current setting value in the constant current control circuit 20 is set to a level slightly higher than a current setting value in the DC power supply circuit 10.;COPYRIGHT: (C)2014,JPO&INPIT