Protected three-phase 600 V gate driver

20 February 2008 Power Electronics / Power Management

International Rectifier has introduced the IRS26302D protected 600 V three-phase gate driver with ground fault protection. The IC has a seventh gate drive channel for a power factor correction (PFC) switch or inverter brake, making it well-suited to medium power appliance motor control and many other general-purpose three-phase inverter applications.

The IRS26302D integrates power MOSFET/IGBT gate drivers with three high-side and three low-side referenced output channels to provide 200 mA/350 mA drive current at up to 20 V MOS gate drive capability operating up to 600 V.

The IC incorporates negative Vs immunity circuitry to protect the system from catastrophic events that can be seen during high-current switching and short-circuit conditions in addition to ground fault protection, critical features 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.

To address the needs of applications suffering from space constraints and to simplify design, the IRS26302D features integrated bootstrap functionality. This 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.

Part of IR's G5 HVIC platform, the new IC utilises IR's advanced high-voltage IC process which incorporates next-generation high-voltage level-shifting and termination technology to deliver enhanced electrical over-stress protection and higher field reliability. In addition to the over-current and over-temperature detection input, the IRS26302D features under-voltage lock-out protection, integrated deadtime protection, shoot-through protection, a shutdown input, fault-reporting, and is compatible with 3,3 V input logic.

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