View CMI8800_6958581.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

cmi capella microsystems inc. 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 1 confidential CMI8800 single/three phase spindle motor controller/driver ic for dvd/cd-rom preliminary data sheet revision 3.0 07/09/99 this preliminary data sheet indicates that this product is still in the design cycle. all specifications are based on design goals only. capella microsystems inc. assumes no responsibility for the use of this product. capella microsystems inc. reserves the right to make changes in specifications or discontinue this product at any time without notice. please contact capella microsystems inc. for possible updates before starting a design. capella microsystems inc. products are not designed for use in life support applications. any parties who use these products in such applications do so at their own risk and agree to fully indemnify capella microsystems inc. for any damages resulting from such improper usage or sale. .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 2 confidential general description the CMI8800 is a spindle motor controller/ driver ic designed for dvd/cd-rom and video cd (vcd) applications. this chip can be used to control/drive single phase spindle motors (see page 20, figure 17 for the CMI8800 application example) as well as conventional three phase spindle motors. it contains all of the necessary functional blocks such as the hall bias generator, hall amplifier, current limit amplifier, thermal shutdown, anti- reverse protection, short brake, h-bridge power driver and other functional blocks required for motor controller/driver ics (see page 4, figure 2 for the CMI8800 simplified block diagram). features brushless dc motor controller/driver ic dedicated for dvd/cd-rom and video-cd (vcd) spindle motor applications can drive both single phase spindle motors as well as conventional three phase spindle motors built-in hall bias generator and hall amplifiers for easy interface with hall sensor devices built-in sleep or start/stop mode to put the chip and motor into sleep mode for power saving built-in current limit amplifier to limit the maximum allowed current into the motor coil built-in thermal shutdown for overheat protection built-in torque control to setup the motor?s torque according to the control voltage applied to the ec and ecr pins built-in anti-reverse protection circuitry to prevent the motor from going into the opposite (reverse) rotation direction in the constant linear velocity (clv) operating mode (used when the rotation speed is decreased from the inner track to the outer track) built-in frequency generator (fg) output as well as rotation detect (fr) output circuitry built-in short brake circuitry to short all of the motor coils and stop the motor quickly compatible with 3.3v digital signal processor (dsp) interface applications dvd-drives cd-drives absolute maximum ratings (ta = 25 c) description symbol value unit power supply for internal core vcci 7 v power supply for motor driver vccm1/vccm2 16 v maximum power dissipation pd 1700* mw storage temperature tstg -55 ~ 150 c operating temperature topr -20 ~ 75 c maximum output current iout 1300 ma hall bias current ihb 50 ma * 13.6mw/ c derating for operating temperature > 25 c (see page 19, figure 16 for the derating curve) recommended power supply range description symbol value unit power supply for internal core vcci 4.25 ~ 5.5 v power supply for motor driver vccm1/vccm2 3.0 ~ 15 v .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 3 confidential CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh figure 1: CMI8800 pin assignment .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 4 confidential 13 14 h3+ h3- 21 20 18 17 16 15 ecr fr sb cnf br vh hall bias generator h3+ h3- mux in case of single phase 11 12 h2+ h2- hall amp 8 9 10 gnd h1+ h1- hall amp hall amp hysteresis comp h1+ h1- h3+ h3- hysteresis comp h2+ h2- 28 27 26 25 24 23 22 rnf vccm1 vccm2 vcci fg ps~ ec torque limit vcci vcci clk q~ d q r communication control logic 1 2 3 4 7 ldin w ldot v u 19 1p/3p~ logic thermal shutdown torque sense amp current limit amp + - analog mux a0 s b1 + - single phase motor - signal processing circuitry h-bridge power driver 1p/3p~ figure 2: CMI8800 simplified block diagram .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 5 confidential pin description pin # pin name pin description 1 ldin input for the external lead network (for single phase motor) this pin is left open for three phase motor applications 2 w h-bridge power driver output (w) 3 ldot output of external lead network (for single phase motor) this pin must be left open for three phase motor applications 4 v h-bridge power driver output (v), nc for single phase mode 5 nc no connection [ this pin must be left open ] 6 nc no connection [ this pin must be left open ] 7 u h-bridge power driver output (u) 8 gnd common ground 9 h1+ hall amplifier #1 positive input 10 h1- hall amplifier #1 negative input 11 h2+ hall amplifier #2 positive input 12 h2- hall amplifier #2 negative input 13 h3+ hall amplifier #3 positive input 14 h3- hall amplifier #3 negative input 15 vh hall bias generator output (open collector output) 16 br brake mode control, high = break mode 17 cnf charge pump capacitor between this pin and ground 18 sb short brake control pin, high = short brake mode 19 1p/3p~ single phase (1p)/three phase (3p) control pin high = single phase. default = three phase = low 20 fr rotation detection pin 21 ecr reference voltage to torque sense amplifier 22 ec torque control input terminal 23 ps~ power save or sleep mode control ( logic low: power save or sleeping mode ) 24 fg fg signal output pin 25 vcci 5v power supply for internal core circuitry 26 vccm2 12v power supply for h-bridge motor (power) driver 27 vccm1 12v power supply for internal core circuitry 28 rnf motor current sense resistor note: fin gnd .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 6 confidential electrical characteristics ( ta = 25 c, vcci = 5v, vccm1 = 12v, vccm2 = 12v) description signal condition min typ max unit internal core circuitry supply current at normal mode ivccin ps pin = high - 4.1 6.5 ma internal core circuitry supply current at power save ivccis ps pin = low - 0 0.2 ma power save mode on voltage ps~on - - 1.5 v power save mode off voltage ps~off 3.5 - - v single phase mode on voltage 1pon 3.5 - - v single phase mode off voltage 1poff - - 1.5 v three phase mode on voltage 3pon - - 1.5 v three phase mode off voltage 3poff 3.5 - - v short brake mode on voltage sbon br pin = 0v 3.5 - - v short brake mode off voltage sboff br pin = 0v - - 1.5 v brake mode on voltage bron ec>ecr, sb pin open 3.5 - - v brake mode off voltage broff ec>ecr, sb pin open - - 1.5 v fg pin (active low) o/p high voltage voh(fg) ifg = -20 m a 4.5 4.8 - v fg pin (active low) o/p low voltage vol(fg) ifg = 3.0ma 0 0.25 0.4 v fr o/p high voltage (reverse rotation) voh(fr) ifr = -20 m a 4.1 4.4 - v fr o/p low voltage (forward rotation) vol(fr) ifr = 3.0ma 0 0.25 0.4 v hall bias voltage vhb ihb = 10.0ma 0.5 0.9 1.5 v hall amp i/p bias current ibha 0 0.7 3.0 m a in-phase i/p voltage range for hall amp. vipha 1.5 - 4.0 v minimum hall i/p ac signal vinh(ac) 50 - - mvp-p h3 hysteresis ( hysteresis comp) vhys(h3) 10 20 40 mv ec/ecr pin i/p voltage range vec 1.0 - 4.0 v torque sense amp offset voltage + ec (o/s+) ecr = 2.5v 20 50 80 mv torque sense amp offset voltage - ec (o/s-) ecr = 2.5v -80 -50 -20 mv torque sense amp i/p bias current ib(tsa) ec = ecr - 0.5 2.0 m a torque sense amp transfer gain gec(tsa) ec = 1.5v, 2.0v measured 0.41 0.51 0.61 a/v h-bridge o/p high voltage voh(hb) iout = 600ma with respect to vccm - 1.0 1.5 v h-bridge o/p low voltage vol(hb) iout = 600ma - 0.4 0.8 v pre-drive current ipdr ec = 0v, o/p open - 35 70 ma torque limit current itl 560 700 840 ma .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 7 confidential input-output state machine table output input condition forward reverse pin no. 9 10 11 12 13 14 7 4 2 7 4 2 pin name h1+ h1- h2+ h2- h3+ h3- u v w u v w test point (forward) 1 l m h m m m h l l l h h pin 7 high 2 h m l m m m l h h h l l pin 7 low 3 m m l m h m l h l h l h pin 4 high 4 m m h m l m h l h l h l pin 4 low 5 h m m m l m l l h h h l pin 2 high 6 l m m m h m h h l l l h pin 2 low note 1: forward ececr note 2: input condition h=2.6v, m=2.5v, l=2.4v input-output state machine table brake mode (br) pin #16 ececr l forward reverse brake h forward short brake off on u off on v off on w figure 3: CMI8800 short brake operation .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 8 confidential test circuit and conditions CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v ivccin n.c. 5v 2.5v n.c. vhb 5v 0ua cnf 2.5v 2.6v 8 ohm 8 ohm 8 ohm 2.5v n.c. figure 4: CMI8800 internal core circuitry supply current at normal (ivccin) .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 9 confidential test circuit and conditions (continued) CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v ivccis n.c. 5v 2.5v n.c. vhb 5v 0ua cnf 2.5v 2.6v 8 ohm 8 ohm 8 ohm 2.5v n.c. figure 5: CMI8800 internal core circuitry supply current at sleep (ivccis) .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 10 confidential test circuit and conditions (continued) CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v ivccin n.c. 5v 2.5v n.c. vhb 5v 10ma cnf 2.5v 2.6v 8 ohm 8 ohm 8 ohm 2.5v n.c. figure 6: CMI8800 hall bias voltage (vhb) measurement .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 11 confidential test circuit and conditions (continued) CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v ivccin n.c. 5v 2.5v n.c. vhb 5v 0ua cnf 2.5v 2.6v 8 ohm 8 ohm 8 ohm 2.5v n.c. vitl note: itl=vitl/0.5 figure 7: CMI8800 torque limit current (itl) measurement .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 12 confidential test circuit and conditions (continued) CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v n.c. 5v 2.5v n.c. vhb 5v 0ua cnf 2.5v 2.6v 8 ohm 8 ohm 8 ohm 2.5v n.c. vitl case 1: 1.5v case 2: 2.0v note: gec(tsa)=[(vitl at 1.5v-vitl at 2.0v) 0.5]/(2.0v-1.5v) figure 8: CMI8800 torque sense amplifier transfer gain [gec(tsa)] measurement .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 13 confidential test circuit and conditions (continued) CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v n.c. 5v 2.5v n.c. vhb 5v 0ua cnf 2.5v 2.6v 8 ohm 8 ohm 8 ohm 2.5v n.c. vitl ib note: current meter ib reading figure 9: CMI8800 torque sense amplifier i/p bias current measurement .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 14 confidential test circuit and conditions (continued) CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v n.c. 5v 2.5v n.c. vhb 5v 0ua cnf 2.5v 2.6v 8 ohm 8 ohm 8 ohm 2.5v n.c. vitl note: vitl/0.5 figure 10: CMI8800 torque sense amplifier torque limit current (itl) measurement .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 15 confidential test circuit and conditions (continued) CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v n.c. 5v 2.5v n.c. vhb 5v 0ua cnf 8 ohm 8 ohm 8 ohm 2.5v n.c. vitl i1 i1 i1 i2 i2 i2 see note 1 see note 1 note 1: value of i1 meter reading (hn+=4.0v, hn-=2.5v) or value of i2 meter reading (hn+=2.5v, hn-=4.0v) where n=1, 2, 3 figure 11: CMI8800 hall amplifier i/p bias current (iha) measurement .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 16 confidential test circuit and conditions (continued) CMI8800 1 2 28 27 3 4 26 25 5 24 6 7 23 22 8 9 21 20 10 11 19 18 12 17 13 14 16 15 ldin rnf w vccm1 ldot vccm2 v vcci n.c. fg n.c. ps~ u ec fin fin gnd ecr h1+ fr h1- 1p/3p~ h2+ sb h2- cnf h3+ br h3- vh 0.5 ohm 12v n.c. 5v 2.5v n.c. vhb 5v 0ua cnf 2.5v 2.6v 8 ohm 8 ohm 8 ohm 2.5v n.c. vrnf 3mv 2.4v ~ 2.6v note 1: ec(o/s+): voltage at ec pin ? voltage at ecr pin when vrnf=3mv or ec(o/s-): voltage at ec pin ? voltage at ecr pin when vrnf=3mv (see transfer function below) 2.5v vrnf (v) forward 3mv 3mv ec(o/s-) ec(o/s+) voltage at ec pin figure 12: CMI8800 torque sense amplifier offset voltage [ec(o/s+) and ec(o/s-)] measurement .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 17 confidential clk d q + - + - h3+ h3- h2+ h2- + - ec ecr h: output open (hi-z) figure 13: CMI8800 reverse detection circuitry rotating forward at ececr, but motor still running forward when the motor rotated in reverse direction, reverse detection output becomes hi-z continuing rotating in reverse direction for a short period of time due to inertia stop figure 14: anti-reverse protection algorithm .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 18 confidential vccm2 three phase motor vccm1 0.5 ohm rnf u v w figure 15: CMI8800 h-bridge output driver and vccm1/vccm2 power supply .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 19 confidential 25 50 75 100 125 150 500 1000 1500 2000 13.6mw/c tac power dissipation (mw) 1700 figure 16: CMI8800 derating curve (for power dissipation) .com .com .com .com 4 .com u datasheet
cmi 3777 stevens creek blvd., suite 320 santa clara, ca 95051-7364 u.s.a tel: (408) 260-3400 fax: (408) 248-3416 copyright ? capella microsystems 1999 20 confidential 13 14 h3+ h3- 21 20 18 17 16 15 ecr fr sb cnf br vh hall bias generator h3+ h3- mux in case of single phase 11 12 h2+ h2- hall amp 8 9 10 gnd h1+ h1- hall amp hall amp hysteresis comp h1+ h1- h3+ h3- hysteresis comp h2+ h2- 28 27 26 25 24 23 22 rnf vccm1 vccm2 vcci fg ps~ ec torque limit vcci vcci clk q~ d q r communication control logic 1 2 3 4 7 ldin w ldot v u 19 1p/3p~ logic thermal shutdown torque sense amp + - analog mux a0 s b1 + - vccm=12v servo torque control input rnf 12v 5v vecr cnf vcci rld1 cld rld2 1-phase motor vcci vcci h/s 3 vcci h/s 2 ra ra rb rb n.c. single phase motor - signal processing circuitry h-bridge power driver current limit amp 1p/3p~ figure 17: CMI8800 application example ? single phase motor .com .com .com 4 .com u datasheet

▲Up To Search▲

Price & Availability of CMI8800

	To Download CMI8800 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .