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Optocouplers tout 'highest' CMR ratio

Posted: 27 Oct 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Avago? ACPL-3130? ACPL-J313? ACNW3130? optocouplers?

In response to the industrial automation and data center power supply markets transition to more energy-efficient products that require fast switching operation, Avago Technologies has rolled out three new gate drive optocouplers that are said to offer the industry's highest common mode rejection (CMR) ratio of 40kV/?s@VCM=1500V. This key specification guarantees the reliable transfer of drive information at very high DC-link voltage and over fast switching operations, said the company.

CMR is the maximum slew rate of common mode voltage (VCM) which can be sustained, keeping the output in the correct logic state, said the company. CMR failure results in glitching on the output as either a positive or negative pulse.

The ACPL-3130, ACPL-J313 and ACNW3130 gate drive optocouplers are suitable for applications such as isolated IGBT/MOSFET-gate drives for industrial inverters, switching power supplies (SPS) and uninterruptible power supplies. The optocouplers deliver 2.5A maximum peak output current, and support a wide operating voltage range of 15-30V required by gate-controlled devices.

The ACPL-3130 contains a GaAs LED while the ACPL-J313 and ACNW3130 contain an AIGaAs LED. The optocouplers have received approval in accordance with the following safety standards: UL (pending), CSA (pending) and IEC/EN/DIN EN 60747-5-2.

The ACPL-3130 is priced at $1.56; the ACPL-J313 is priced at $1.89; and the ACNW3130 is priced at $2.50, all in quantities of 10,000.

- Gina Roos

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