At the heart of an inverter is the IGBT, a
costly power device which must switch extremely fast and is required to
withstand the high DC bus voltage. The efficiency and reliability provided by
these power devices are of utmost importance to maximize the performance of the

Optocouplers are commonly used in inverters to provide safe galvanic
isolation between the control circuits and to help protect against damage caused
by high voltages in the DC bus. In particular, gate drive optocouplers are
widely used to drive IGBTs since they can provide high output current for
precise switching and fault detection features for IGBT protection.

The ACPL-339J is the industry’s first dual-output gate drive optocoupler,
uniquely designed to support a MOSFET buffer to maximizes gate drive design
scalability and power conversion efficiency. It also offers a compact and
cost-effective solution for protecting the IGBT with integrated features like
UVLO, short circuit detection and “soft” IGBT turn-off.

Attendees will learn:

  • How to drive IGBT for better power conversion efficiency
  • How to protect IGBT to improve system overall reliability
  • The advantages ACPL-339J and achieving system design scalability, efficiency
    and reliability

Who should attend: Power designers doing motor drives,
industrial and renewable energy inverters, and switching power supplies

Smith, Field Applications Engineer, Isolation Products, Avago

Ted Smith was born in Dayton, OH and received his
Electrical Engineering degree from Ohio Univerity in 2001. He did postgraduate
work at Ohio Univeristy, Hochschule Ravensburg-Weingarten in Weingarten,
Germany, and the Electrotechnical Laboratory (ETL) in Tsukuba, Japan. Ted joined
the power electronics industry in 2004, working for Fuji Semiconductor, then LEM
Inc, before joining Avago in 2010.