TDK High insulation strength compact SMT transformers for DC-DC converters

TDK's compact EPCOS E13EMHV series SMT transformers with high dielectric strength. This series of components is widely applicable to various DC-DC converter topologies. The electrical isolation distance complies with IEC 60664-1 and 61558-2-16 standards. The maximum operating voltage is 1000 V DC, and transient overvoltage can be tolerated up to 2500 Vpeak. And the withstand voltage between the primary side and the secondary side is up to 3000 V AC (50 Hz, 60 seconds).

The size of B78308 * A003 transformer is only 12.9 x 15.8 x 11.4 mm, which can greatly save space, and the internal structure design is compact, meeting the requirements of IEC 60664-1 standard (Np/Ns: minimum space distance is 8.14 mm, minimum creepage distance is 11.2 mm) on space distance clearance and creepage distance.

Among the elements, there are two types applicable to flyback DC-DC converters with turn ratios of 1: 0.22: 0.78 and 1: 0.33: 0.7, and three types applicable to push-pull and half-bridge converters with turn ratios of 1: 1.07 and 1: 1: 0.57: 2.14 respectively. The design frequency range of the transformer is 100 kHz to 500 kHz, the coupling capacitance is as low as 2 pF, and the allowable operating temperature range is - 40 ° C to+150 ° C. In addition, the components of the new EPCOS transformer series comply with the AEC-Q200 Rev. D standard and are widely applicable to various DC-DC converter topologies and grid driver circuits in electric vehicles and industrial electronic devices.

Applications:Various DC-DC converter topologies and grid driver circuits in electric vehicles and industrial electronic devices

Main features and advantages

● Withstand voltage up to 3000 V AC (50 Hz, 60 seconds) between primary and secondary sides, and work voltage up to 1000 V DC

● Compact size: 12.9 x 15.8 x 11.4mm

● Space distance and creepage distance comply with IEC 60664-1 standards

● Comply with AEC-Q200 Rev.D standard