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IGBT driver cores enable short circuit soft shutdown

Posted: 25 Mar 2014     Print Version  Bookmark and Share

Keywords:CT-Concept Technologie  IGBT  MOSFET  soft shutdown  short circuit 

CT-Concept Technologie GmbH, a Power Integrations company, has unveiled products that include its SCALE-2+ gate driver chip set. The IGBT driver manufacturer stated that the SCALE-2+ technology enables soft shutdown (SSD) to be implemented in cases of a short circuit without the need for additional components.

This is beneficial in applications with low stray-inductance where full Advanced Active Clamping, a method invented by Concept for shutting down IGBTs or MOSFETs in a controlled manner under any circumstances, may not be necessary.

Concept's SCALE-2 IGBT driver cores promise to deliver cost, performance, size and reliability benefits. SCALE-2+ driver technology offers high levels of integration by including an integrated trigger mechanism that limits IGBT MOSFET Collector-Emitter, or MOSFET Source-Drain voltages in the event of a short circuit.

SCALE-2 IGBT driver core

Michael Hornkamp, director regional marketing, Concept said: "We have implemented SSD on-chip without any additional external circuitry by controlling the on-chip high-side N-Channel booster stage. We increase the output impedance of the gate driver which enables the IGBT or MOSFET to turn off with a reduced di/dt, thereby limiting the Collector-Emitter or Source-Drain overvoltage. As a result, our drivers have integrated, cost-effective, short-circuit protection as well as increased flexibility and reduced size."

The first product to ship with the SCALE-2+ chip set is Concept's 2SC0106T2A0-12. This is a two-channel IGBT/MOSFET gate driver core for 1.2kV IGBTs in the 37-110kW power range. The 2SC0106T2A0-12 is suited for servo drives used in industrial applications, UPS and solar inverters. It meets IEC 61800-5-1 and IEC 60664-1 standards for reinforced insulation.

- Graham Prophet
  EE Times Europe

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