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IRMD26310DJ Datasheet(PDF) 6 Page - International Rectifier |
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IRMD26310DJ Datasheet(HTML) 6 Page - International Rectifier |
6 / 28 page IRMD26310DJ www.irf.com © 2008 International Rectifier 6 IRMD26310DJ - Hardware Description The IRMD26310DJ reference design kit supports the evaluation of the IRS26310DJ which is a high voltage power MOSFET and IGBT driver with integrated DC Bus overvoltage protection. The reference design is a full-function unit operating out of 220VAC input. An onboard digital controller IC enables driving an Induction Motor in open- loop Volts-per-Hertz mode. The included GUI software allows modification of system parameters in order to drive an induction motor in open-loop Volts-per-Hertz mode and study the IRS26310DJ high voltage gate driver IC by changing parameters such as PWM frequency and deadtime. In addition to DC Bus overvoltage protection offered by IRS26310DJ, the reference design is equipped with protection against motor line-to-line and line-to-DC Bus(-) short by way of IRS26310DJ ITRIP function and also a GUI software controlled motor current limit. The board includes multiple test points to facilitate monitoring IRS26310DJ input and output signal waveforms and examining its various features. Top Level Description The IRMD26310DJ reference design is composed of the following key blocks: • The Input Stage includes an EMI filter, 8A bridge rectifier and dc bus capacitor rated for 400W continuous operation. It is noted that IRMD26310DJ does not feature a current limiting fuse. • The Power Inverter uses 6 x IRGIB10K60D1 IGBT power switches mounted on a 1.9 oC/W heatsink. The IGBTs can be replaced with user preferred power devices but user may need to replace components such as bridge rectifier & dc bus current shunt to match the device ratings. • The IGBTs in the power inverter stage are driven by the IRS26310DJ Gate Driver and associated circuitry involving bootstrap capacitors, gate drive timing resistors, and fault diagnostic elements. • The Control Circuitry for driving the motor is based on the IRMCF341 digital control IC. The IRMCF341 control IC has been configured to run an induction motor in the open-loop Volts-per-Hertz mode. The control IC generates the PWM signals for IRS26310DJ gate driver. The user also has the option to drive the IRS26310DJ externally by disconnecting the jumpers on connector P1 and bridging in external connections. The digital IC communicates with a PC over an isolated serial link and the included GUI software allows the user to set the motor speed and modify common inverter parameters such as switching frequency and deadtime. • An on-board DC-DC Converter low voltage power supply derives the 15V, 3.3V & 1.8V rails from the main dc bus. For more information regarding the other blocks of the reference design, please refer to the detailed schematics. Figure 1: IRMD26310DJ System Block Diagram |
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