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Three-phase gate driver integrates op amp, bootstrap

Posted: 27 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:three-phase gate driver? operational amplifier? MOSFET?


International Rectifier has introduced the IRS233x(D) family of three-phase gate driver ICs for low-, mid- and high-voltage motor drive applications including permanent magnet (PM) motor drives for air conditioners, washing machines, pumps and fans, and micro, mini and general purpose inverter drives.

The IRS233x(D) is a high-voltage, high speed power MOSFET and IGBT three-phase bridge-driver with referenced output channels to provide 200mA/420mA drive current at up to 20V MOS gate drive capability operating up to 600V. The new devices feature an integrated ground-referenced operational amplifier to provide analog feedback of the bridge current via an external current sense resistor and optional integrated bootstrap diode to reduce external part count and reduce PCB size.

The IRS233x(D) family provides comprehensive protection including proprietary negative voltage spike (Vs) immunity for safe operation under extreme switching conditions and short circuit events. The output drivers feature a high pulse current buffer stage designed for minimum driver cross-conduction. Propagation delays are matched to simplify use at high frequencies. The floating channel can be used to drive N-channel power MOSFET or IGBT in the high-side configuration.

The ICs utilize IR's advanced high-voltage IC process which incorporates next-generation high-voltage level-shifting and termination technology to deliver superior electrical over-stress protection and higher field reliability. In addition to over-current detection input, the IRS233x(D) features under-voltage lock-out protection, integrated deadtime protection, shoot-through protection, fault-reporting, and is compatible with 3.3 V input logic.

Available in 44-pin PLCC and 28-pin SOIC (wide body), pricing for the IRS233x(D) begins at $2.49 each in quantities of 100,000-units. Production quantities are available immediately. The devices are RoHS compliant and prices are subject to change.

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