Power Electronics

Low-Profile Gate Drive Transformer With 1500Vdc Isolation

TT electronics BI Technologies has developed a family of gate drive transformers in miniature surface mount packages. Designated the HM42 Series, the transformers provide 1500Vdc isolation between gate and drive and 1500Vrms insulation between primary and secondary windings.

The new HM42 Series gate drive transformers feature an operating frequency range from 50kHz to 1MHz. DCRs range from 0.6? to 2.0? for the primary winding and 0.3 to 2.0? for the secondary winding. Turns ratios, depending on model configuration, include 1:1, 1:1:1 and 2:1:1.

Minimum primary inductance ranges from 1200µH to 300µH. The RoHS-compliant transformers are offered in package sizes ranging from 3mm to 7.8mm. Operating temperature ranges from -40° to +125°C.

Typical pricing for the HM42 Series gate drive transformer ranges from $0.64 to $0.82 each in quantities of 10k pieces. Lead time is from stock to 8 to 10 weeks.

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