TDK Corporation has unveiled the EPCOS EP9 series, a more compact alternative to the existing E10EM surface-mount transformers designed specifically for IGBT and FET gate driver circuits.
Engineered for high performance in demanding e-mobility and industrial applications with 500-V system voltage, these components offer exceptional insulation, minimal coupling capacitance, and high thermal resilience.
The EP9 series is well-suited for electric vehicle (EV) inverters and dc-dc converters, where reliable high-voltage isolation and efficient power conversion are critical for vehicle performance and range.
The EP9 series is built on a MnZn ferrite core with SMD L-pin construction, delivering a height of just 11 mm and a 13 x 11 mm footprint. These transformers operate across a wide temperature range of −40° to +150° C, ensuring durability under harsh conditions. With a coupling capacitance of only 2 pF, compliance with AEC-Q200 Rev. E, and creepage and clearance of at least 5 mm, these surface-mount components are ideal for automotive applications, including high-voltage EV power electronics.
The transformers support topologies such as half-bridge and push-pull converters with a typical operational frequency of 100 to 400 kHz and turn ratios optimized for specific applications. These components are available in tape-and-reel packaging, ensuring ease of assembly for high-volume production environments.
A sample kit is available under order number B82804X1, containing six transformers of each version.
Features
- Dimensions: 13 x 11 x 11 mm (L x W x H)
- Wide temperature range: −40z up to +150° C
- Very low coupling capacity: 2 pF
- Insulation characteristics: Creepage and clearance ≥5 mm [cumulative, core floating]
- Qualified to AEC-Q200 Rev. E, making it suitable for high-voltage EV systems.
With the shift to higher-voltage EV architectures and the increasing demand for efficient, compact power electronics, TDK’s EP9 series transformers provide automakers and Tier 1 suppliers with a high-performance, space-saving solution for next-generation EVs.
Filed Under: Technology News