3-phase gate drivers integrate bootstrap functionality

28 November 2007 Power Electronics / Power Management

International Rectifier has introduced the IRS2336xD protected 600 V three-phase gate driver ICs with integrated bootstrap functionality for appliance motor control, servo drives, micro-inverter drives and a wide range of general purpose applications. Integrating power MOSFET/IGBT gate drivers with three high-side and three low-side referenced output channels, the ICs provide 180 mA /330 mA drive current at up to 20 V MOS gate drive capability operating up to 600 V. These devices incorporate advanced functionality including negative Vs immunity circuitry to protect the system from catastrophic events that can be seen during high-current switching and short-circuit conditions, critical for industrial systems that require high levels of robustness and reliability. Also, an advanced input filter has been integrated to reject noise and reduce distortion, improving system performance in many motor control applications. The integrated bootstrap functionality can reduce the bootstrap power supply from six components to three, while providing VBS over-voltage protection for the system through the use of additional integrated intelligent protection circuitry.

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