Dear Friends,

Current sensing tends to become noticeably more complicated once switching frequencies rise and thermal margins begin shrinking at the same time. Low losses, stable isolation, and accurate measurement bandwidth are usually far easier to request in a specification sheet than to achieve simultaneously in real hardware.

Find all my magazines from 2006 on in our free archive on bodospower.com. There is no better way to communicate. We all share one world. As a publisher I serve the world: one magazine, on time, every time.

Kind regards,
Bodo Arlt

CSX7030 series High-isolation, Low-loss Current Sensing Transformers

Coilcraft CSX7030 Series high-isolation, low-loss current sense transformers are designed for high-performance power electronics and automotive applications. They feature a compact chip-style package with an ultra-low 3.3 mm profile.

With very low DCR, the series minimizes conduction losses and self-heating, making it ideal for high-current applications up to 20 A. A wide range of turns ratios from 1:50 to 1:200 provides excellent design flexibility, while bandwidth up to and beyond 1 MHz enables accurate, high-frequency current measurement in fast-switching systems such as DC-DC converters, motor drives, inverters, and power management circuits.

Free evaluation samples of the CSX7030 Series are available online at www.coilcraft.com.