Yokogawa Test & Measurement announced the release of the PBDH0400 series differential probe with a maximum input voltage of 2000 V and a frequency bandwidth of 400 MHz. The differential probes in this series are capable of providing the measurements required for the development of the next generation of high-speed power devices.
Development background
With increasing emphasis on measures to help decarbonise all aspects of society, there is a need to improve the energy efficiency of motors and inverters used in the transport and renewable energy sectors. This need is particularly acute in the power electronics industry, where the increase in applications for - and production of - next-generation power devices based on silicon carbide (SiC) technology requires ultra-precise measurement of high-voltage and higher-speed signals.
This task requires measurements to be made from an ungrounded (floating) potential, which necessitates the use of differential probes rather than standard probes. Yokogawa Test & Measurement therefore set out to develop wide-bandwidth differential probes capable of measuring high-voltage and high-speed signals.
High voltage and wide bandwidth measurement
Initially, two models of the PBDH0400 series will be available: model 702922 with a maximum input voltage of 2000 V and model 702921 with a maximum input voltage of 1000 V.
For accurate waveform monitoring of fast-changing signals common in electric vehicle (EV) and clean energy applications, the PBDH0400 Series differential probes measure voltages above 1000V and offer a wide frequency range from DC to 400MHz. This capability is of particular benefit to developers of next-generation inverters, enabling them to accurately monitor minute changes in high-speed switching signals. In addition, excellent noise immunity allows detection of events that can cause unexpected anomalies, including waveform overshoot and ringing.
The PBDH0400 series features Yokogawa's probe interface, which saves both cost and space by eliminating the need for an external power supply when connected to a Yokogawa oscilloscope. In addition, the interface automatically sets the probe attenuation ratio so that measurement can begin immediately upon connection to the instrument. Combining the PBDH0400 with Yokogawa's 12-bit DLM5000HD or DLM3000HD oscilloscopes enables more accurate waveform measurements.
The main markets for the new probe series are automotive electronics, including inverters and motors, power electronics and mechatronics, including industrial equipment.
