MicroPower Direct launches high-isolation, +15V/-8V DC/DC converter for IGBT apps



IG275E series miniature DC/DC converter

Available now from MicroPower Direct, the IG275E series is a family of miniature DC/DC converter. They are designed specifically to provide the asynchronous output voltage levels required to properly bias the gate drive of IGBT semiconductors.

Three models operate from 12, 15 or 24 VDC input bus voltages, providing dual outputs of +15 VDC and -8 VDC; the recommended gate bias levels for most IGBT driver circuits. The output current is ±120 mA. Standard features include 3,000 VAC I/O isolation, very low isolation capacitance and high efficiency. The MTBF (perMIL HDBK 217F) is greater than 3.5 Mhours.

All models are packaged in a miniature, 7-pin SIP case that requires very little board space. The pin-out is industry standard & all case materials meet UL94-V0 requirements. They are specified for operation over the wide operating temperature range of -40°C to +105°C with no heat sinking required. Cooling is by free-air convection.

The IG275E are specifically designed for use in the driver circuits for IGBT devices such as the inverters used in solar power systems and railway traction systems. They simplify the task of setting up the correct gate bias levels while also providing a high level of isolation to the gate drive circuit. The MicroPower Direct website includes a technical note on driving IGBT’s.