Power test bench PCTB series

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Alpitronic, working in partnership with leading power semiconductor manufacturers, has a long and successful history in the development of power cycling test benches (PCTBs). Alpitronic PCTBs can test the power cycling lifetime of up to 12 half-bridges simultaneously. The modules are connected in series on two test lines, which are alternately stressed by applying a load current of up to 1200A, allowing very efficient utilization of the installed load current supplies. Each device under test is connected to the load current circuit by a low-impedance busbar and has a dedicated measurement and control unit that communicates with a central control unit. This yields great flexibility in the number of modules tested. The devices can be mounted on up to 12 cooling plates connected in parallel to the cooling circuit by fast couplings. The standard cooling plates can easily be replaced by custom cooling plates, which are necessary when testing pin-fin modules. The cooling circuit provides a wide flow temperature range from 25° to 120°C. The test bench can also be used to determine the thermal impedance and the thermal resistance of power cycling modules. After delivery of the test benches, we offer maintenance and calibration services as well as remote and on-site support and spare part services. Key features Simultaneous testing of up to 12 IGBT, diode, or (SiC)-MOSFET power modules with two switches per module Load currents up to 1200A Cooling temperatures up to 120°C Flexible module connections for all types of packages Measurement of the thermal impedance and thermal resistance Power cycling tests in compliance with AQG 324