Programmable power supplies feature arbitrary waveform generation capabilities

October 24, 2012 // By Paul Buckley
TDK’s new TDK-Lambda Z+ Series of high-density, 2U format benchtop and rack mounted 200 W and 400 W power supplies now feature arbitrary waveform generation capabilities to create and store up to four application specific test waveforms.

The provision of the test waveforms removes the need for an external controller in basic simulation tasks.

Up to 12 values can be programmed using the waveform creator software provided and four waveforms can be stored in the Z+ unit’s memory. More complex waveforms can be created using LabView. The waveforms can be either repetitive or single-shot and injected into the system under test and the results analysed confirming the proper operation of the powered system or pinpointing a fault.

A typical test environment would be to simulate the characteristics of another power source, for example to simulate car battery voltage transients occurring under all conditions including starting according to DIN 40839 for testing automotive electronics. The DIN 40839 standard ensures electromagnetic compatibility in road vehicles and defines several types of tests, including the injection of supply line transients (test pulses) in 12 and 24 V onboard systems.

Another typical application is to simulate the output profile of a solar cell array under all conditions in order to test connected equipment.

Z+ power supplies also have a fast command processing time, output sequencing and two programmable output pins that can be used to control the isolation relays for example without the need of a separate PLC.

More information about the Z+ Series power supplies at