IT255 Schaffner

DATASHEET Pulse Transformers IT series with single secondary winding Pulse Transformer with Single Secondary Winding Galvanic separation of drive and power circuit Approvals Voltage resistance up to 8 kV Ignition current up to 3 A Turns ratio up to 3:1 IT pulse transformers are designed to offer you galvanic isolation for transformer coupled gate drives. The IT series provides negligible delays and the possibility of voltage scaling. They are available with single or double secondary winding for multiple gate drives. Choosing the IT product line brings you the rapid availability of a standard gate drive transformer. A wide selection on turns ratio, ignition current and voltages are designed to offer you the desired standard product. Technical specifications Features and benefits Up to 3000 V Nominal operating voltage Galvanic separation Operating frequency 40 kHz max. Voltage resistance up to 8 kV 500 kHz max. for data transmission DC to 40000 Hz Allows high potential difference voltage scaling Ignition currents 0.1 to 3 A 40C Optional grounded shields Rise time 0.3 to 2.3 s Vacuum potting Up/50 Hz/2 s max. according to VDE 110b Test voltage Very low partial discharge effects nom Max. partial discharge voltage 1.5 x U PCB through hole mounting or faston types Temperature range (operation and storage) -25C to +70C (25/70/21) Custom-specific versions on request Flammability corresponding to UL 94 V-0 listed materials Typical applications Gate drive circuit Power supplies Power converters Frequency converters Switching applications DC/DC converters Line coupling transformers in high-speed data transmission2 EMC/EMI Products Schaffner Group Datasheets 11 Oct 2018 Pulse transformer selection table Pulse transformer Turns ratio Ignition Voltage Voltage Rise Inductance* Resistance Coupling Input/ Output Weight current time area time capacitance connections Iign Unom Up V0t tr Lp Lstr Rp Rs Ck A V kV Vs s mH H pF g IT 155 1:1 0.1 500 4 480 1 5 85 1.2 1.2 6 02 13 IT 245 1:1 0.1 750 4 500 1.2 8 100 1.48 1.48 10 02 6 IT 237 1:1 0.25 500 2.5 1100 1 25 35 1.9 2.2 50 02 14 IT 239 1:1 0.25 1000 6 300 2.3 3 80 0.9 0.9 5 02 13 IT 255 1:1 0.25 750 4 250 1.1 2.2 40 0.8 0.8 8 02 6 IT 258 1:1 1 750 3.2 250 0.25 2.5 3 0.62 0.75 80 02 6 IT 370 1:1 1 1000 5 4000 0.6 0.3 6 0.16 0.18 40 02 71 IT 364** 1:1 3 3000 8 5000 1.7 1.5 10 0.16 0.14 35 05 220 IT 246 2:1 0.1 750 4 200 0.4 7 35 2.1 1.1 7 02 6 IT 248 2:1 0.25 750 3.2 350 2.2 17 80 3.2 1.6 9 02 6 IT 260 3:1 0.1 500 3.2 200 0.3 12 30 2 0.8 8 02 6 * Tolerance: +50% -30% ** Not suitable for PCB-mounting. Explanations: tr rise time at given load resistor R and 70% of the output pulse height. Lp primary inductance measured at 1 kHz (secondary coile open). Lstr stray inductance measured at the secondary side, short circuit at the primary side. If there are several secondary coils only one at the time is connected (measuring frequency 10 kHz). The ignition current is a set peak value where the voltage drop over the coil resistance is still insignificant (mostly below 1 V).