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Optocouplers provide advanced fault protection

Posted: 29 Aug 2008     Print Version  Bookmark and Share

Keywords:optocoupler  IGBT  high-speed  gate drivers 

ACPL-333J, ACPL-330J series

Avago Technologies has announced the additions to its intelligent gate drive optocoupler product family. Avago says that ACPL-333J and ACPL-330J series of high-speed IGBT optocouplers are easy-to-implement in industrial inverter and power management applications, such as isolated IGBT/power MOSFET gate drives, AC and brushless DC motor drives, industrial inverters and uninterruptible power supplies.

Avago claims that ACPL-333J and ACPL-330J, which offer 2.5 and 1.5 Amp output current respectively, are advanced, high-speed and easy-to-use intelligent gate drivers that help make IGBT fault protection compact and affordable. Available in a stretched outline-16 (SO-16) package, these new optocouplers provide space and cost savings in designs and meet minimum 8mm creepage and clearance requirements.

When developing a reliable, yet cost-effective motor control system, designers require optocouplers that provide more protection, efficiency and the ability to operate in noisy environments. Avago says that its highly integrated ACPL-333J and ACPL-330J intelligent gate drivers help improve precision and efficiency of motor inverters by featuring active Miller clamp, integrated Vce desaturation detection, under voltage lockout protection, soft shut down, isolated fault feedback and automatic fault reset. Active Miller clamping eliminates the need for a negative gate drive, saving negative power supply and printed circuit board space. Avago says that the new gate drive optocouplers offer superior CMR performance and a wide operating temperature range.

The ACPL-333J is CSA, UL1577 and IEC/EN/DIN EN 60747-5-2 approved. The ACPL-330J is pending approval for CSA, UL1577 and IEC/EN/DIN EN 60747-5-2.

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