T60403-D4721-X001 -  Vacuumschmelze  -  Vacuumschmelze

T60403-D4721-X001 (T60403D4721X001)  DRIVE TRANSFORMERS FOR IGBT - INSULATION VOLTAGE UP TO 500 Vrms

In recent years, power electronics have had a decisive influence on the technology of electrical energy generation, distribution and conversion. Modern semiconductors enable electrical energy to be controlled and converted rapidly and safely with low losses. Key contributors to progress in this field are turn-off power semiconductors like IGBTs (insulated gate bipolar transistors), MOSFETs (metaloxide semiconductor field-effect transistor) and GTOs (gate turn-off thyristors). VAC products are significant contributors in maintaining efficiency and safety in semiconductor switching and low-loss power transmission.

Higher switching frequencies, higher blocking voltages and switching power influence the way a semiconductor is activated and controlled to allow for safe and simple switching. Drive transformers ensure galvanic separation while also supplying the switching signal and /or the energy for the semiconductor drive circuit.

Transformers must meet a number of requirements:

• High insulation strength

• Low coupling capacitance forhigh interference resistance

• Compact design

• Low leakage inductance for high impulse precision

• Transmission of switching power

• Wide range of operating temperature (e.g. -40 °C to +105 °C)

• National and international standards, e.g. EN 50178, IEC 61800, UL508, IEC 62109, UL1741

Transformer properties:

• Up to 1200 V DC for SMD; up to 8.5 kVrms for PTH

• Low number of turns 
• SMD solutions available

• Lower number of turns; high permeability

• Typically 2 to 20 watts

• Low and linear variation of permeability with temperature
• Designs according to relevant standards, properties verified by inspections and type testing