may 15, 2003 rev 1.0 IRMCO203 sensorless control fpga object code accelerator tm based soft asic manual features xilinx spartan2-300 tm b ased co mp lete sen s o r less c ontrol s o lution for pe rma ne nt ma gne t a c motors w i th sin u s o i d a l back emf . no v o ltag e feed b ack sen sin g req u i red sy nc hronous ly rota ting fra m e c u rre nt re gula t e d c ontrol high s t a r ting torque a nd s m ooth s p e e d ra mping direct in terface to ir2175 cu rren t sen sin g h i g h v o ltag e ic direct in terface to ir213x 3-p h ase g a te d r iv er ic versatile lo ss min i mizatio n sp ace vecto r pw m co n f ig u r ab le arch itectu r e fo r mo to r/d r iv e parameters a s y n chronous serial communication interface (rs232c, rs422, rs485) 1 0 v re fe re nc e c o mma nd input w i th 1 2 - bit a / d in terface 17-b i t p a rallel b u s in terface fo r micro c o n t ro ller exp an sio n in teg r ated b r ake igbt co n t ro l se rv ode s i gne r tm to o l fo r easy o p e ratio n exo file format product summary max s y sclk 33. 3 mhz max pll clock for current feedback 133.3 mhz sensorless control computation time 10 usec max high speed operation 100,000 rpm (2pole motor) speed operating range (typical) 5 to 100% speed accuracy 0.01% speed resolution 15 bit full range adjustable current limited start-up over current, speed, dc bus trip f ault protection pwm carrier frequency 16 bit/sysclk ir2175 current feedback sampling latency 8.3 usec current feedback temp drift/offset calibrated current feedback data resolution 1111 count/sysclk*4 max asci comm. speed 56 kbps target eeprom devic e xc18v02 (programmable) x c 1 7 v 0 2 (one-time) description IRMCO203 is an f p ga object code for a sensorless ac perm anent magnet motor (sinusoidal back emf ) control sy stem, w h ich can be dow nloaded into the xilinx spartan2-300 tm low cost f p ga. w i th IRMCO203, t he user can readily build the high performance sensorless drive sy stem w i thout any programming effort. t h is soft asic is so flexible that the user can configure and optimize the sy stem specifically to t he needs of each application. w i th internat ional rectifier high voltage ics such as ir2175 current sensing ic and ir2137 3-phase gate drive ic, IRMCO203 minimizes analog and pow er electronics component count, and simplifies the design for low cost drives w i t hout a shaft encoder. IRMCO203 can be easily adapted to various permanent magnet motors through the fully confi gurable gui (graphic user interface) tool. t h is docum ent is the pr oper t y of i n ter n ational rectifier and m a y not be copied or distr i but ed without expr essed consent.
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