Current testing method for power module

The invention provides a current test method of a power module, which is applied to a controller in a power module test system, the power module test system comprises a power module analyzer, a signal generation circuit and the controller in communication connection with the power module analyzer and the signal generation circuit, and the current test method comprises the following steps: after the power module analyzer is connected to the power module, the signal generation circuit generates a signal to the power module; judging whether the voltage of the preset test capacitor meets a preset test condition or not; if yes, controlling the signal generation circuit to send a preset pulse signal to a target switch tube in the power module; acquiring continuous voltage data of the preset test capacitor in a period when the signal generation circuit sends a preset pulse signal to the target switch tube, and finally performing calculation based on the continuous voltage data and a capacitance value of the preset t