Called ‘WBG-DPT Solution’, it is a combination of test gear from its existing equipment portfolio, and software for that test gear, which makes measurements to JEDEC and IEC standards where applicable.
“With the ability to run on Tektronix 4, 5 and 6 Series MSO oscilloscopes, integrating into the oscilloscopes, WBG-DPT Solution boasts measurement capabilities such as an automatic de-skew technique, and reverse recovery timing plots, making it easier for engineers to see reverse recovery details for multiple pulses overlaid on a single display.”
De-skew correct for delays in the test fixtures and probes – essential for the fast edges associated with GaN switching, for example.
According to Tektronics, its semi-automatic process involves producing an alignment waveform, and does not need the test set-up to be rewired.
“The engineer adjusts a few settings to match the alignment waveform with the measured waveform, as the software corrects any differences in delays”, it said, claiming: “This reduces deskew time from an hour or more to just five to 10 minutes.”
Reverse recovery timing plots are available, with measurements (to JEDEC and IEC) from multiple pulses overlaid on a single display. The user can query results on every first or second pulse, or all pulses of a double pulse set.
“The measurement provides the ability to easily zoom in on the reverse recovery region and even debug reverse recovery parameters of the system,” said Tektronix.
Other measurable parameters, and there are many, include Eon, Eoff (left) and Qoss – the latter useful for measuring output charge quickly, said the company, for example, for evaluation at different junction temperatures.
Find the WBG-DPT Solution web page here
