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IRMCT3UF1AP Datasheet(PDF) 3 Page - International Rectifier |
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IRMCT3UF1AP Datasheet(HTML) 3 Page - International Rectifier |
3 / 7 page www.irf.com 3 IRMCT3UF1 Module Block Diagram The IRMCT3UF1 is a complete Sensorless drive system based on a proprietary digital motion control ASIC. The system is based on a configurable control engine implemented by hardware logics in the ASIC. The system has a simple and low cost structure, made possible by an advanced IR motion power components including the MOSFET module and IR2011 monolithic gate driver IC. These components together with the ASIC simplify hardware implementation. Since all control logic is implemented in hardware state machine as opposed to programmed software, unmatched parallel computation is achieved resulting in higher bandwidth control and higher motor operating frequency (< 25 µsec PWM period). Overview Application Diagram Gate Drive Gate Drive A/D PM Motor 28V DC Bus 28V Bus Rtn U Phase Current Speed cmd VBus Drive RS232 Drive Gate Power Over-Temp Sensorless Control ASIC Fault Logic Over-Load FLT FLT Clr W Phase Current V Phase Current DC- DC 1 +15V +5V +3.3V Control Computer Start/Stop Control Board Power Substrate (IMS) Bus Capacitor Transient Protection 28V Bus Rtn Status - Fault Status - OK Linear Reg DC- DC 2 Analog Speed Command 10,11 14,15 5,6 1,2 16,17 8,9 12,13 3,4 7 24 26 28 27 31 30 33 32 34 18 29 Analog 0 Ref Analog 0 Ref .02 .02 .02 22,23,25 substrate Power Interfac e Controller Section Power Substrate A/D Motor DC Bus DC Bus Rtn Current Measurement Analog Speed Command VBus Gate Driv e Gate Driv e Serial Interface Sensorless FOC Algorithm RS232 C θ j e θ j e 2/3 Host Register Interface Configuration Registers Monitoring Registers Space Vector PWM FAULT + - - + - + Rotor Angle / speed Estimator RAMP A/D interface Discrete Interface Discrete I/O Drive Gate Dead time Analog Speed Command EEPROM Power Interface Section +15 +5 +3.3 Current shunt |
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