Compact gate driver transformer series for 500V systems

TDK Corporation has unveiled the EPCOS EP9 series (ordering code: B82804E), which is more compact than the existing E10EM series of surface-mount transformers designed especially for IGBT and FET gate driver circuits. Engineered for high performance in demanding e-mobility and industrial applications with 500V system voltage, these components deliver outstanding insulation, minimal coupling capacitance, and high thermal resilience. The company is driving the green transformation towards a more electric and sustainable future with this new series.

The new series is built on a MnZn ferrite core with SMD L-pin construction, providing a height of just 11mm and a footprint of 13mm x 11mm. These transformers operate across a wide temperature range of −40C to +150C, assuring durability under harsh conditions. With a coupling capacitance of only 2pF, complying with the AEC-Q200 Rev. E standard, and creepage and clearance of at least 5mm, these surface-mount components are commonly used in automotive applications and other demanding environments.

The transformers support topologies such as half-bridge and push-pull converters with typical operational frequency of 100kHz to 400kHz and turns ratios optimised for specific applications. These components are available in tape-and-reel packaging, providing ease of assembly for high-volume production environments.