Pluggable load module to test a voltage regulator

A test device for testing the invariability of the output voltage of a voltage regulator with transient loads, which test device comprises:

• a switch connected with a switch drain contact to an output contact of the voltage regulator and with a switch source contact to ground potential, wherein a load resistance is arranged within this path from the output contact to ground potential;
• a switch driver connected with a switch driver output contact via a gate resistance to a switch gate contact to change the switch into a connected state, where the voltage regulator is loaded with a variable drain-source resistance of the switch and the load resistor, and to change the switch into a disconnected state, where the voltage regulator is disconnected from the load resistor;
• a feedback resistor connected between the switch source contact and an inverted input contact of the switch driver;
• a test signal source connected directly or via a D/A (digital-to-analog) converter to a direct input contact of the switch driver to provide at least a first test signal with a particular test signal form and frequency for changing the switch and varying the variable drain-source resistance of the switch;
• and
• a current adjustment feedback driver connected with a direct input contact via an input resistor to the switch source contact and connected with an inverted input contact via a capacity to a ground contact and connected with a current adjustment feedback driver output contact via a compensator impedance to the inverted input contact of the current adjustment feedback driver to provide on the current adjustment feedback driver output contact a current adjustment feedback signal or current adjustment feedback data for the test signal source to adjust the amplitude of the first test signal until a preset test current at the output contact of the voltage regulator is achieved.