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The optimised layout, featuring electromagnetic shielding and integrated short-pulse suppression, guarantees protection from external interference. Skyper 42 is a dual-channel IGBT driver for 600V, 1200V and 1700V IGBT modules which charges up to 50µC, making it suitable for use in inverter systems up to 1.5MW.

The Skyper 42 boasts of achieving a mean time between failures of more than twenty lakh hours. The service life of the driver is triple that of standard IGBT drivers. Ruggedness starts with the controller side of the driver. The Skyper 42 switches at interference-free 15V and uses short-pulse suppression to reject pulse interference. Signal and power transmission is carried out via purpose-developed transformers due to their very low coupling capacitance, display twenty five per cent more voltage resistance than conventional IGBT drivers.

The control voltages for the IGBTs are stabilised on the secondary side, thus enabling steady and reliable IGBT module control. The optimised mass concept and the shielded PCB enable a hundred per cent increase in interference immunity over the levels specified in the EN standard.

Due to its extensive qualification measures and application-like conditions throughout the entire development process, the Skyper 42 driver achieves a MTBF as per SN29500 of more than twenty lakh hours – three times as long as a standard IGBT driver.

The use of integrated power and signal transformers means that the customer no longer has to include his own costly, discrete isolation solutions or corresponding protection, which is needed in driver ICs. The integrated power unit concept generates the +15/-8V gate voltage from 15V input voltage, meaning the customer needs no additional power units.

Easy integration into systems is made possible by Skyper 42 adapter boards. IGBT triggering is symmetrical and, in the case of modules connected in parallel, carried out with separate signals for each chip. The triggering reduces voltage and current peaks and provides efficient module control that makes full use of the potential offered by new, fast switching IGBT chips. Additional measures for over-voltage reduction such as active clamping are superfluous.

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