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IPMs simplify motor drive design

Posted: 18 Mar 2005 ?? ?Print Version ?Bookmark and Share

Keywords:international rectifier? ir? integrated power module? ipm? imotion?

The new set of 600V, 16A and 20A integrated power modules (IPMs) from International Rectifier (IR) promises to simplify the design of compact, high-performance variable-speed motion control power stages for various applications.

Designed specifically for 85Vac to 253Vac variable speed motor drives for energy efficient appliances, these new IPMs integrate IR's proprietary high voltage integrated circuit (HVIC) with a three-phase inverter power stage. The 16A device addresses the 750W to 1.2kW power range, while the 20A devices can accommodate 750W to 2.2kW. All of the new IPMs are packaged in efficient, single in-line packages (SIP) with improved thermal characteristics.

The IRAMY20UP60B is a 20A, 600V IPM with internal shunt resistor that combines the company's low VCE(on) non-punch-through and short circuit rated IGBT technology with its three phase HVIC gate driver. The integrated HVIC enables over-current and over-temperature protection, as well as under-voltage lockout, delivering high levels of protection for fail-safe operation. With a built-in temperature monitor, the IRAMY20UP60B in SIP3 is an advanced solution available in the market for a fully integrated inverter driver application up to 20A, added IR.

The IRAMX20UP60A is a 20A, 600V IPM that does not include a shunt resistor but is packaged in a more compact SIP2 outline. It is also a full-transfer mold structure and has internal heat spreaders for the power die for maximum thermal efficiency. Furthermore, an open emitter configuration of the low-side IGBT switches offer easy current feedback and over-current monitoring for high precision and reliable control.

The IRAMX16UP60B, offering similar functions and features to its 20A counterparts, is rated at 16A and for motors in the 750W to 1.2kW power range. This product also comes in the SIP2 package, includes internal shunt resistor, temperature monitor and all the safe-fail features of the IRAM product family.

The IRAMX16UP60B is pin-to-pin compatible with the existing IRAMS10UP60B, while the IRAMX20UP60A is pin-to-pin compatible with the already available IRAMS10UP60A and IRAMX16UP60A.

iMOTION platform
As part of IR's iMOTION integrated design platform, the new power stage IPMs work in concert with digital control ICs, current sensing ICs and gate driver ICs in the iMOTION platform. The digital control ICs configure motion control algorithms with dedicated hardware logic for permanent magnet or AC induction motors and their position feedback devices. The iMOTION linear current sensing ICs and high-speed gate driver ICs form the analog chipset, interfacing the digital stage with the power stage, explained IR.

Samples of the IRAMX16UP60B, IRAMX20UP60A and IRAMY20UP60B IPMs are available immediately, with delivery for production quantity at 8 weeks after receipt of order. Pricing starts at $10.95 each in 10,000-unit quantities.

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