BD6669FV motor driver ics 1/16 3phase spindle motor driver for cd-rom BD6669FV BD6669FV is a 3-phase spindle motor driver adopting 180 pwm direct driving system. noise occurred from the motor driver when the disc is driven can be reduced. low power consumption and low heat operation are achieved by using dmos fet and driving directly. ! ! ! ! applications cd-rom ! ! ! ! features 1) direct-pwm-linear driving system. 2) built in power save circuit. 3) built in current limit circuit. 4) built in fg-output. 5) built in hall bias circuit. 6) built in reverse protection circuit. 7) built in short brake circuit. 8) low consumption by mos-fet. 9) built in capacitor for oscillator. 10) built in rotation detect. ! ! ! ! absolute maximum ratings (ta=25 c) parameter symbol limits unit power supply voltage v cc tj max 7v v supply voltage for motor v m 7 20 v vg pin voltage v g i omax topr 1000 mw c c operating temperature range 150 c junction temperature power dissipation output current storage temperature range pd tstg 1020 ? 20~ + 75 ? 55~ + 150 ma reduce power by 8.16mw for each degree above 25 c. ? 2 70mm 70mm 1.6mm glass epoxy board. ? 1 however, do not exceed pd, aso and tj=150 c. ? 1 ? 2 ! ! ! ! recommended operating conditions parameter supply voltage for motor vg pin voltage this product described in this specification isn't judged whether it applies to cocom regulations. please confirm in case of export. this product is not disigned for protection against radioactive rays. power supply voltage v cc 4.5 5.5 ? v m 3 6.5 v v v ? v g 7.5 14 ? symbol min. typ. max. unit
BD6669FV motor driver ics 2/16 ! ! ! ! block diagram driver matrix u-pre driver l-pre driver a31 1 28 27 26 25 24 23 22 21 20 19 18 17 16 15 2 3 4 5 6 7 8 9 10 11 12 13 14 a21 a32 a22 a11 a12 h1 + h1 ? h2 + h2 ? h3 + h3 ? v m 1 v h + ? + ? + ? + ? + ? matrix torque amp + ? + ? + ? + ? + ? + ? r nf 1 fg ps ec ecr v m 2 sb c nf v pump cp2 cp1 gnd v cc r nf 2 hall bias charge pump exor osc pwm comp reverse detect fig.1 hall comp hall amp tsd ps cl dq ck current sense amp
BD6669FV motor driver ics 3/16 ! ! ! ! pin descriptions pin no. function hall input amp 2 positive input pin name h 2 + 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 short brake pin sb hall input amp 3 negative input h 3 ? hall input amp 2 negative input h 2 ? hall input amp 3 positive input h 3 + hall input amp 1 negative input output3 for motor resistor connection pin for current sense power supply for signal division power supply for driver torque control standard voltage input terminal capacitor connection pin for phase compensation gnd hall bias pin hall input amp 1 positive input output3 for motor power supply fo driver output1 for motor output1 for motor output2 for motor output2 for motor capacitor pin 1 for charge pump torque control voltage input terminal h 1 ? capacitor pin 2 for charge pump cp2 capacitor connection pin for charge pump v pump r nf2 v cc v m2 fg output pin fg ecr ec cp1 power save pin resistor connection pin for current sense ps r nf1 cnf gnd v h h 1 + a 12 a 11 a 21 a 32 a 22 v m1 a 31
BD6669FV motor driver ics 4/16 ! ! ! ! input output circuits output pins a 1 : pin1, 2, a 2 : pin3, 4, a 3 : pin5, 6 hall bias pin8 cnf pin19 torque amplifier ecr : pin24, ec : pin25 short brake pin20 fg output fg : pin26 rnf2 pin21 power save pin27 cp1 output pin16 cp2 / v pump output cp2 : pin17, v pump : pin18 hall input h1 + : pin9, h1 ? : pin10, h2 + : pin11, h2 ? : pin12, h3 + : pin13, h3 ? : pin14 a 1 a 2 a 3 v m r nf 1 v cc hn + 1k 5k 1k 1k 1k v cc hn v cc v h (pin8) 100k cp1 (pin16) v cc 50 v cc fg (pin26) v cc 50 v cc v m v pump (pin18) cp2 (pin17) 2k 2k cnf (pin19) v cc 50 20k sb (pin20) v cc 30k 20k ps (pin27) v cc 30k 355 rnf2 (pin21) v cc 1k ecr (pin24) ec (pin25) v cc 1k
BD6669FV motor driver ics 5/16 ! ! ! ! electrical characteristics (unless otherwise noted, ta=25 c, v cc =5v, v m =5v) parameter conditions circuit current 1 circuit current 2 on voltage range off voltage range hall bias voltage input bias current minimum input level input voltage range offset voltage ( + ) hall hysteresis level (+) hall hysteresis level ( ? ) in-phase input voltage range fig.2 fig.2 fig.2 fig.2 fig.2 fig.4 fig.4 fig.4 fig.8 fig.8 fig.6 fig.6 fig.6 fig.6 fig.7 fig.7 fig.6 fig.5 fig.3 fig.6 fig.9 test circuit i hb = 10ma e c = e cr = 1.65v sutand by mode sutand by mode hall input amp short brake linear range 0.5v 3.3v offset voltage ( ? ) input current input / output gain output on-resistance torque limit voltage charge pump output voltage i fg =+ 100 a v cc = v m = 5v on voltage range off voltage range i o = 600ma (upper + lower) |