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Cui launches DC-DC converters for power IGBT gate drivers

Posted: 06 Jun 2013 ?? ?Print Version ?Bookmark and Share

Keywords:Cui? converters? IGBT? gate drivers? controllers?

Cui Inc. recently launched the VQA series of board mount DC-DC converters for IGBT gate drivers. The devices will provide short circuit protection with 3000VAC input to output isolation (4242VDC), and are suited to provide a fully isolated gate drive for both industrial and clean energy applications, such as wind turbines.

The VQA series of DC-DC converters operates efficiently at high frequencies (approx. 20kHz) over an industrial operating temperature range of -40 to 85C and come in a compact, internally-potted 8-pin SIP case measuring 19.5x9.8x12.5mm. The series converters are able to isolate and convert power from the main dc bus voltage and are touted to be ideal to IGBT gate drivers that do not contain a built in power supply.

In high side gate drivers, the VQA series' isolation functionality addresses the problems associated with a constantly changing emitter potential. And, in low side IGBT gate drivers, it eliminates potential ground loop noise problems.

Typical applications incorporating IGBT gate drivers that require an isolated DC-DC converter include photovoltaic panels, solar inverters, servo systems, and pump controllers.

The VQA series is rated up to 2 W and provides nominal inputs of 12, 15, and 24VDC. Dual independent outputs of 15/-8, 15/-8.7, and 17/-8.6VDC are available.

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