News

12 May 2009

 

Avago launches first extended-temperature 2.5A gate drive optocouplers for industrial apps

At this week’s PCIM Europe 2009 event in Nuremburg, Germany, Avago Technologies of San Jose, CA, USA is launching what it claims is the industry's first extended-temperature 2.5 Amp gate drive optocouplers for use in industrial applications.

The ACPL-312U (a member of the R2Coupler family) incorporates an alloy lead frame to offer superior heat dissipation, which allows it to operate over an extended industrial temperature range from -40ºC to 125ºC. The new optocouplers target the design of isolated IGBT/power MOSFET gate drives, industrial inverters, AC and brushless DC motor drives, and uninterruptable power supplies.

The ACPL-312U provides reinforced insulation and reliability that delivers safe signal isolation which is critical in automotive and high-temperature industrial applications. The low-power optocoupler series has been designed with under voltage lock-out protection (UVLO), high common mode rejection (CMR) performance (to prevent erroneous driving of IGBTs for reliable operation under noisy environments), and high-speed response to improve efficiency. Moreover, it is developed with a double wire bonding process to provide added redundancy and reduce wire breakage during high-temperature operation. Additionally, the low 5mA maximum supply current allows bootstrap operation and reduces IC power consumption (hence reducing the number of costly isolated power supplies or DC-to-DC converters).

Avago’s series of 2.5A gate drive optocouplers contain an AIGaAs LED, optically coupled to an IC with a power output stage, whose high operating voltage range provides the drive voltages required by gate-controlled devices. Moreover, the voltage and current supplied by the optocouplers are suitable for directly driving IGBTs with ratings up to 1200V/100A. For IGBTs with higher ratings, this series of optocouplers can be used to drive a discrete power stage that drives the IGBT gate.

The ACPL-312U series comes in a standard DIP-8 package with a creepage of 7.4mm and clearance of 7.1mm, compliant to most industrial safety standards such as IEC/EN/DIN EN 60747-5-5, UL 1577 and CSA. Pricing is $2.03 in 10,000 piece quantities.

See related item:

Avago launches second series of hermetically sealed 3.3V optocouplers for aerospace and military apps

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