Programmable Power Supplies with Arbitrary Waveform Features

06 November 2012 - TDK Corporation introduced the TDK-Lambda Z+ Series of high-density, 2U format benchtop and rack mounted 200W and 400W power supplies with unique arbitrary waveform generation capabilities. The ability to create and store up to 4 application specific 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 4 waveforms can be stored in the Z+ unit’s memory. More complex waveforms can be created using LabView. These 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.

Once stored the program can be run remotely or recalled and run directly using the Z+ front panel controls obviating the need for a computer connection if preferred.

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 24V 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, uniquely, two programmable output pins that can be used to control isolation or polarity reversal relays, for example, without the need of a separate PLC.