Oscilloscope-based double pulse take a look at resolution for SiC and GaN applied sciences

Tektronix, Inc has launched its new Double Pulse Take a look at (WBG-DPT) resolution. With new huge bandgap switching units permitting important advances in EVs, photo voltaic vitality and industrial controls, the answer can present automated, repeatable, and correct measurements on huge bandgap units reminiscent of SiC and GaN MOSFETs.

Designers of next-generation energy converters will now have the ability to utilise the WBG-DPT resolution to optimise their designs confidently and shortly. With the flexibility to run on Tektronix 4, 5 and 6 Collection MSO oscilloscopes, integrating seamlessly into the measurement system of the oscilloscopes, the WBG-DPT Answer boasts a number of industry-first measurement capabilities, reminiscent of an automated WBG deskew approach and reverse restoration timing plots, making it simpler for engineers to see reverse restoration particulars for a number of pulses overlaid on a single display. Measurements are additionally designed to align with JEDEC and IEC requirements for double pulse testing and diode reverse restoration.

“Tektronix clients are the designers of the subsequent technology of cutting-edge energy electronics know-how, and their designs have to be optimised to steadiness effectivity, dimension and reliability,” shares Daryl Ellis, Tektronix Mainstream Portfolio Common Supervisor. “We're assured that the design of the Tektronix WBG-DPT Answer will enable for simplified debugging, repeatable measurements (per JEDEC and IEC requirements) and a sooner studying curve. Take a look at automation reduces take a look at instances and retesting errors, making certain our clients meet their mission timelines and time-to-market plans.”

“The WBG-DPT software program supplies instantaneous measurements of key parameters, like EON, EOFF, and QRR, when performing double-pulse assessments,” mentioned Masashi Nogawa, workers methods engineer at Qorvo. “The software program makes the facility waveform and markers displaying the combination ranges used to calculate the vitality losses instantly seen. This is a superb various to exporting waveform knowledge into Excel spreadsheets for processing.”

To realize significant vitality loss measurements, designers should right for delays launched by take a look at fixtures and probes. The standard approach for aligning drain-to-source-voltage (VDS) and drain present (ID) measurements require rewiring the take a look at setup and cautious pretest measurements.

The sSolution’s industry-first WBG deskew approach eradicates the necessity for rewiring and will even be carried out after double pulse measurements have been taken. The software program generates an alignment waveform to simulate the consequences of delays within the take a look at setup. The engineer adjusts just a few settings to match the alignment waveform with the measured waveform, because the software program corrects any variations in delays. This new course of reduces the deskew time from an hour or extra to only 5 to 10 minutes.

Since energy converters should function over a variety of temperature circumstances, there's a rising have to measure output cost (QOSS) at totally different junction temperatures. The Tektronix WBG-DPT Answer boasts quick and correct QOSS measurements, offering essential perception into the consequences of machine output capacitance.

With the answer, industry-first reverse restoration timing plots make it straightforward for engineers to see reverse restoration particulars for a number of pulses overlaid on a single show. Measurements are made per JEDEC and IEC requirements, and customers can configure measurements within the WBG resolution to question outcomes on each first or second pulse or all pulses of a double-pulse set. This distinctive strategy to reverse restoration plotting permits for a number of double pulse units and supplies visible and measurement outcomes on every set. The measurement gives the flexibility to simply zoom in on the reverse restoration area and even debug reverse restoration parameters of the system.

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