High-Side Double Pulse Switching Loss with IsoVu Current and Voltage Probes

For engineers working on wide bandgap SiC and GaN power converters, this video demonstrates making accurate high-side double pulse measurements. Seamus Brokaw, Applications Engineer, uses an IsoVu™ Isolated Current Probe, Isolated Voltage Probe, and a 5 Series B MSO running Double Pulse Testing application software. He explains the test setup, probe choices, and deskewing, then demonstrates a double pulse test to determine switching losses, followed by key parameters like di/dt, peak drain voltage, dV/dt, and reverse recovery measurements.

Wide Bandgap Double Pulse Solution

5 Series B MSO 

With a remarkably innovative pinch-swipe-zoom touchscreen user interface, the industry's largest high-definition display, and 4, 6, or 8 FlexChannel® inputs that let you measure one analog or eight digital signals per channel, the 5 Series MSO is ready for today’s toughest challenges, and tomorrow’s too. It sets a new standard for performance, analysis, and overall user experience. 

  • 4, 6, or 8 FlexChannel® inputs
  • Bandwidth: 350 MHz, 500 MHz, 1 GHz, 2 GHz (Upgradeable)
  • Sample Rate: 6.5 GS/s
  • Record Length: 62.5 Mpoints standard, 125, 250, 500 Mpoints,(optional and upgradable)
  • Vertical resolution: 12-bit ADC

IsoVu™ Isolated Current Probes

Make more accurate dynamic shunt‑based current measurements with IsoVu isolated current probe series current probes. High bandwidth, flexible ranges, complete galvanic isolation, and extremely low noise enable you to go beyond traditional limits—ideal for low‑noise measurements on current shunts in floating sections of power circuits.

Innovative wideband shunts, specially designed to integrate with the probe define a complete high-bandwidth, low-noise current measurement solution.

IsoVu™ Isolated Voltage Probes

Uncover the fast, floating signals that your non-isolated probes are hiding. IsoVu Probe Technology virtually eliminates common mode interference using optical isolation. This delivers accurate differential measurements on reference voltages slewing ±60kV at 100V/ns or faster. And with our IsoVu Generation 2 design, you get all the benefits of IsoVu technology at 1/5 of the size.

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