TDK Corporation releases the EPCOS EP9 series 500V Gate Driver Transformer, which is more compact than the existing E10EM series of 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.
With this new series, TDK is driving the green transformation towards a more electric and sustainable future.
The EP9 series is built on a MnZn ferrite core with SMD L-pin construction, delivering a height of just 11 mm and a footprint of 13 x 11 mm. These transformers operate across a wide temperature range of −40 °C to +150 °C, ensuring durability under harsh conditions.
With a coupling capacitance of only 2 pF, complying with the AEC-Q200 Rev. E standard, and creepage and clearance of at least 5 mm, these surface-mount components are generally 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 100 to 400 kHz and turns 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: −40 °C 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
Applications
- IGBT/MOSFET gate driver transformers for inverter systems
- Auxiliary transformers for DC-DC converters
| Ordering code | Topologies | Turns ratio N1 / N2, N3 | LN1 (typ.) [µH] | Lleak,N1 (typ.) [µH] | E*dtN1 (max.) [µVs] (unipolar/bipolar) |
|---|---|---|---|---|---|
| B82804E0164A200 | Half bridge | 1 : 2.8 : 1.53 | 260 | 5 | 20 / 40 |
| B82804E0473A200 | Push-pull | 1 : 2.9 : 1 | 47 | 1.7 | 15 / 30 |
