Isolated Current Probe Tip Takes on Temperature Extremes in EVs

Why It Matters

Accurate high‑temperature current data reduces design risk for EV power converters and accelerates reliability testing, giving manufacturers a competitive edge in a fast‑growing market.

Key Takeaways

• Measures current from –40°C to 125°C.
• Up to 700 MHz bandwidth for fast switching.
• Supports microamp to kiloamp range via shunt.
• Optional 6‑ft cable enables chamber testing.
• Targets EV, aerospace, AI data center power electronics.

Pulse Analysis

The rapid adoption of silicon‑carbide (SiC) and gallium‑nitride (GaN) devices in electric‑vehicle powertrains has pushed operating temperatures beyond the limits of traditional test equipment. Engineers must verify that converters can survive thermal cycling inside battery packs and under high‑power loads, yet most current measurement tools are calibrated for room‑temperature conditions. This mismatch forces designers to infer current from voltage readings, introducing noise and potentially masking failure modes that only appear at extreme temperatures.

Tektronix’s new probe tip tackles this challenge by extending the IsoVu TICP series into the –40 °C to 125 °C range while preserving up to 700 MHz bandwidth. The galvanic isolation between the tip and oscilloscope eliminates ground‑loop interference, and the shunt‑based design delivers precise readings from microamps to kiloamps. An optional six‑foot cable lets the probe sit outside temperature chambers, preserving signal integrity and simplifying test setups. These specifications enable engineers to capture nanosecond‑scale transients in high‑voltage, fast‑switching converters without sacrificing accuracy, a capability that was previously limited to voltage‑only measurements.

For the broader industry, this development shortens validation cycles for EV power modules, aerospace avionics, and AI‑driven data‑center power supplies. By providing reliable high‑temperature current data, manufacturers can more confidently certify durability, reduce prototype iterations, and accelerate time‑to‑market. As vehicle ranges increase and power densities climb, tools that bridge the temperature‑measurement gap will become essential, positioning Tektronix as a strategic partner in the next generation of high‑performance power electronics.