POWER SUPPLY UNIT, TEST METHOD, POWER SUPPLY EVALUATION DEVICE, METHOD FOR EVALUATING POWER SUPPLY, AND METHOD FOR EMULATING POWER SUPPLY ENVIRONMENT

摘要

PROBLEM TO BE SOLVED: To emulate arbitrary power supply environment.SOLUTION: A main power supply 10 supplies power supply voltage Vdd to a power supply terminal 102 of a DUT 100. A control pattern generation unit 22 generates a control pattern CNT including a pulse train. A compensation circuit 20 injects compensation current Icmp into the power supply terminal 102 of the DUT 100 from a path different from that of the main power supply 10 intermittently according to the control pattern CNT. A switch 20b is provided between an output terminal of a voltage supply 20a and the power supply terminal 102 of the DUT 100, and switched on and off according to the control pattern CNT.