3-phase brushless motor control m 567 33 af p mitsubishi des cri pt i o n the M56733afp is a semiconductor integrated circuit designed as a single chip controller for the fdd spindle motor. the i c i s equipped with a power amplifier, hole amplifier, f g amplifier, oscillator, speed discriminator, and various types o f protection circuits. equipped with mod pin that enables 3-speed switching with a single pin, the M56733afp is very convenient to make system compact. f e at ures l provided with digital servo enabling high precision, high stability and non-adjustment. l 3-speed switch ing function with a pin .................................. mod l enable two systems .......................................................... en?n l i o (peak)=1.0a l low capacitance of dumping capacitor app l i cat i o n fdd spindle motor (5") rec o m m e nde d o perat i n g c o ndi t i o n s supply voltage ................................................. 10.8 ? 12.0 ? 13.2 v oscillation frequency .......................................................... 492 khz maximum output current .................................................... . 800 ma fg amplifier input signal level .............................. 5 mvp-p or more b l oc k d ia gr a m pi n c o n f i g urat i o n ( to p v i e w ) outline 36p2r-d 36 33 34 35 1 4 3 2 32 5 31 6 28 9 27 10 26 11 25 12 13 14 24 23 7 8 30 29 15 22 16 21 17 20 18 19 osc in gnd hb v cc fg mon i fg in + mod osc out en en fg in flt dsc out gnd u v h v + r f h v h w + h w h u err in err out w h u + m5 6733a f p 31 r f 36 u 35 v 34 w 33 h u + 32 h u 24 h v + 23 h v 22 h w + 21 3 fg 4 fg + logic tsd fg ctl v ref v ref ovsd 17 flt 20 err out 19 err in (? 18 dsc out gnd 16 mod h w 2 hall bias 6 en 13 en 5 fg (monitor) 14 osc in 15 osc out osc 1 / n discriminator err en control 1 v cc 7 12 25 30
3-phase brushless motor control m 567 33 af p mitsubishi abs o l ut e m axi m um rat i ng s (ta=25?c) t ypi cal charact eri s t i cs 6,13,21 ? 24,32,33 (pin number) 0 ? v cc symbol ratings unit parameter conditions v cc v hd io v in p t k q t j t opr t stg supply voltage between 21 and 22, between 23 and 24, between 32 and 33 (pin number) 15 1.0 150 -20 ? 75 -40 ? 125 v a v w c/w c c c output current p ower dissipation thermal derating temperature at junction operating temperature storage temperature use of infinite heat sink use of infinite heat sink f in 5 hole amplifier, differential input voltage 1000 4. 5 27.8 v khz apply voltage at pin clock frequency 5.0 3.0 p ower dissipation p dp (w) 0 25 150 ambient temperature t a ( c) 50 125 1.0 2.0 4.0 100 0 thermal derating (maximum rating) with infinite heat sink used 75 4.5 free air
3-phase brushless motor control m 567 33 af p mitsubishi with circuit turned off limits min. type. max. symbol test conditions unit parameter el ect r i cal charact eri s t i cs (ta=25?c, v cc =12v unless otherwise noted) 28 ma ma v measurement of mean level of discriminator output db v voltage at rf pin when the voltage at flt pin is lower than 1.5v. v m a v v in =12v 6pin v in =0v 13pin except for injector current with circuit turned on v % lo h i + for deceleration side, - for acceleration side fosc=492khz ma v i inj =6ma v circuit current circuit current hole amplifier input current phase output center voltage center voltage difference between phases output saturation voltage control input reference voltage error amplifier output level current limit reference voltage function input threshold voltage voltage gain between control input and output difference in voltage gain between phases input current at function input pin discriminator output level error amplifier reference voltage discriminator count error oscillation frequency minimum operating current of injector i o =0.7a, sum of upper and lower voltage i cc l i in ha i cc h d v n v sat v n g v v th v ref i in ? d g v v cl v in vo? v inj v o dsc i in fosc i inj max d t i in mod volfg i1fg i inj min fg amplifier output low level (monitor) leak current at fg amplifier output pin (monitor) input current at mod pin error amplifier input current voltage at injector pin maximum operating current of injector 0v applied 12v applied 12v applied il=200 m a fosc=492khz fosc=492khz fosc=492khz 6,13pin lo h i h i lo voltage at flt pin when output starts source side sink side source + sink m a m a m a m a v m s m a v v v db 18 9 300 4.0 0.4 7.1 6.3 5.1 0.2 3.2 2.8 1.35 1.20 1.05 25.10 1 8.05 16.65 26.81 23.80 20.82 30.00 28.00 26.00 2 2.4 2.2 2.0 -0.02 -0.2 3.1 2.5 2.2 1.05 0. 8 0.6 0.44 0.40 0.36 2.5 1.0 1000 700 500 -70 -100 -150 1.5 0.9 0.6 5.3 4. 8 4.1 1.2 0.8 0.5 6 1 -6 0.2 -0.2 25 4 0.2 0.1 1.0 800 565 435 -140 -98 -75
3-phase brushless motor control m 567 33 af p mitsubishi app l i cat i o n ci rcui t e xam p l e x 1 =492khz (oscillator) notes: c 1 =33 m f c 2 =0.47 m f c 3 =10 m f c 4 =0.01 m f c 5 =165pf c 6 =56pf c 7 =165pf c 8 =1 m f c 9 =0.01 m f c 10 =0.1 m f c 11 =0.1 m f c 12 =0.1 m f c 13 =0.1 m f r 1 =5.1k w r 2 =510 w r 3 =47k w r 4 =180k w r 5 =1.2k w r 6 =0.5 w r 7 =1.2k w r 8 =4.7 w r 9 =4.7 w r 10 =4.7 w 1. sets items with when measures for such as oscillation require to be taken. 2. r 1 is to be used for injection current boost. set r 1 , if necessary. 3. set r 2 when gain adjustments are required. 1 m5 6733a f p r 1 36 2 35 3 34 4 33 5 32 6 31 7 30 8 29 9 28 10 27 11 26 12 25 13 24 14 23 15 22 16 21 17 20 18 19 c 1 c 2 fg c 4 c 3 r 2 v cc fg moni en c 5 en c 7 x 1 c 6 c 8 mod r 6 r 10 c 13 r 9 c 12 r 8 c 11 r 7 u v w c 9 c 10 r 4 r 3 r 5 disable enable en disable en m (open status) hi (mod 3 2.6v ) lo (mod 0.8v) mode pin fosc/820hz fosc/(4100/3) hz fosc/1640hz f g s y nc hr on ous f r eque nc y h i lo l o h i 5. mode function 4. enable function disable M56733afp
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