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PIIPM50F12D004 Datasheet(PDF) 11 Page - International Rectifier |
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PIIPM50F12D004 Datasheet(HTML) 11 Page - International Rectifier |
11 / 28 page www.irf.com 11 PIIPM50P12B004 I27146 01/03 General Description The PI-IPM is a new generation of Intelligent Power Module designed specifically to implement itself a complete motor driver system. The device contains all peripherals needed to control a six IGBTs inverter, including voltage, temperature and current output sensing, completely interfaced with a 40Mips DSP, the TMS320LF2406A from Texas Instruments. All communication between the DSP and the local host, including DSP software installing and debugging, is realized through an asynchronous isolated serial port (SCI), an isolated port for incremental encoder inputs or synchronous serial port communication (SPI) is also provided making this module a complete user programmable solution connected to the system only through a serial link cable. System Description The PI-IPM is realized in two distinct parts: the Power Module “EMP” and the Embedded Driving Board “EDB,” these two elements assembled together constitute the complete device with all performances described in the following. The complete block schematic showing all functions implemented in the product is represented on the System Block Schematic on page 1. The new module concept includes everything depicted within the dotted line, the EMP power module includes IGBTs, Diodes and Sensing Resistors while all remaining electronics is assembled on the EDB that is fitted on the top of it as a cover with also mechanical protective functions. Connections between the two parts are realized through a single-in-line connector and the EDB only, without disassembling the power module from the system mechanic, can be easily substituted “at the factory” for an upgrade, a system configuration change (different control architecture) or a board replacement. Also software upgrades are possible but this does not even require any hardware changes thanks to the DSP programmability through the serial or JTAG ports. THE “EMPTM” POWER MODULE This module contains six IGBTs + HexFreds Diodes in a standard inverter configuration. IGBTs used are the new NPT 1200V-50A (current rating measured @ 100C), generation V from International Rectifier; the HexFred diodes have been designed specifically as pair elements for these power transistors. Thanks to the new design and technologic realization, this gen V devices do not need any negative gate voltage for their complete turn off and the tail effect is also substantially reduced compared to competitive devices of the same family. This feature simplifies the gate driving stage that will be described in a dedicated chapter. Another not standard feature in this type of power modules is the presence of sensing resistors in the three output phases, for precise motor current sensing and short circuit protections, as well as another resistor of the same value in the DC bus minus line, needed only for device protections purposes. A complete schematic of the EMP module is shown on page 1 where sensing resistors have been clearly evidenced, a thermal sensor is also embedded and directly coupled with the DSP inputs. The package chosen is mechanically compatible with the well known EconoPack outline, also the height of the plastic cylindrical nuts for the external PCB positioned on its top is the same, so that, with the only re-layout of the main motherboard, this module can fit into the same mechanical fixings of the standard Econo II package thus speeding up the device evaluation in an already existing driver. An important feature of this new device is the presence of Kelvin points for all feedback and command signals between the board and the module with the advantage of having all emitter and resistor sensing independent from the power path. The final benefit is that all low power signal from/to the controlling board are unaffected by parasitic inductances or resistances inevitably present in the module power layout. |
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Similar Description - PIIPM50F12D004 |
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