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ha13566af combo (spindle & vcm) driver ade-207-250 (z) 1st edition december 1997 description the ha13566af is combination of spindle and vcm driver designed for hdd and have following functions and features. functions 1.0 a max/3-phase spindle motor driver 400 ma max vcm driver 100 ma max retract driver 11 bit serial interface 9 bit dac for vcm control commutation logic for sensor-less motor center tap pull-up driver for half wave driver soft switching matrix charge pump booster power monitor otsd features low output saturation voltage spindle driver 1.0 v typ (@0.8 a) 0.2 v typ (@0.1 a) vcm driver 1.0 v typ (@400 ma) soft switching drive minimum surface mount package body size 7 7 mm
ha13566af 2 pin arrangement 25 26 27 28 12 3 tab 456 10 9 8 7 14 13 12 11 tab 20 19 tab 17 16 15 21 22 23 24 tab r s vcmn vcmp ct w v r nf pcomp dacout powgood chagpmp data clk serenab comm phase u vcmin v cc2 vb bc1 bc2 lvi1 retout retpow spncomp vref2 cdelay 18 (top view)
ha13566af 3 block diagram v cc2 c101 r nf c102 retpow r101 r103 c103 r tab powgood serial port (11 bit) vcm driver n p retract powgood spnenab current control booster soft switching matrix phase comm chagpmp r2 c1 c2 c105 c106 clk (10mhz max) data serenab spnenab brake half extcom softsw retract fboost v cc2 v cc softsw 2 s vcmenab c107 v cc2 r104 c104 por delay lvi lvi1 r1 vref2 (1.25 v) commutation logic b - emf amps spindle driver u v w charge pump center tap pull-up half dac (9 bit) cdelay vb spncomp rs vcmp vcmn retout d1 d2 d3 ct pcomp c108 brake 1.25 v v cc2 retract d0 dacout vcmin fboost extcom 6 4 10 11 9 5 17 16 12 8 7 13 22 23 19 18 28 27 24 25 26 1 21 20 15 3 2 14
ha13566af 4 serial port construction serenab clk data d0 to d9 md0 to md9 dd0 to dd9 mode control register a0 = 1 a0 = 0 decoder a0 serial port mode control vcm control input data register for dac & vcm figure 1 serial port data construction input data construction for selecting register register data msb lsb d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 a0 figure 2 input data (1) the serial port is required the 11 bit data (d0 to d9 and a0). address bit a0 is used to select the register as follows. when the data length is less than 11 bits, the internal register will not be up dated. and when the data length is more than 11 bits, this register will take late 10 bits and ignore the faster bit. a0 register 0 input data register of dac & vcmgain 1 mode control register
ha13566af 5 mode control register (a0 = 1) bit symbol 1 0 note md0 spnenab spindle enable spindle disable 1 md1 brake brake enable brake disable 1 md2 not use md3 half half wave drive full wave drive md4 extcom external commutation internal commutation 2 md5 softsw soft switching switching md6 vcmenab vcm enable vcm disable md7 retract retracting not retracting md8 polesel for 12 poles motor for 8 poles motor 3 md9 fboost low frequency high frequency 4 notes: 1. the spindle motor is independently winding to the value of the md2, during the md1 is true. 2. the bit md4 select a commutation mode at driving by b-emf sensing. (see commutation timing) 3. in order to prevent the misdetection of back-emf amplifier, the bit md8 should be chosen as shown above table. 4. the bit md9 determine the operating frequency of booster circuit. according to the frequency of input clk at pin 10, the value of md9 should be chosen as shown below. clk (at pin 10) md9 7.1 mhz to 10 mhz 0 4.0 mhz to 7.0 mhz 1 input data register (a0 = 0) bit / dd0 to dd9: these input data are used to control the output current at vcm driver as shown follows. vcmgain input data of dac msb lsb dd9 dd8 dd7 dd6 dd5 dd4 dd3 dd2 dd1 dd0 figure 3 input data (2)
ha13566af 6 the data bit dd9 determine the transfer gain g vcm which is specified as the relationship between the input data at the input data register and the output current at vcm amplifier. (see the under table) dd9 data i o [ma] 1 1ff +199.2/r s 1 100 0.000 1 000 ?00.0/r s 0 1ff +24.9/r s 0 100 0.000 0 000 ?5.0/r s data input timing serenab clk data a0 d9 vth (= 1/2v cc2 typ) vth vth t0 t3 t2 t1 latch point up date point t4 t5 d8 d7 d6 d5 d4 d3 d2 d1 d0 t0 3 20ns t1 3 20ns t2 3 50ns t3 3 40ns t4 3 40ns t5 3 40ns figure 4 input timing on serial port internal dac output serenab t6 t6 t6 : conversion time of dac 1 m s figure 5 conversion timing on dac
ha13566af 7 commutation timing commutation for starting up comm phase i u i v i w delay + 0 + 0 + 0 pulsewidth 3 10 m s 1/f comm synchronous ( @ 0.2s to 0.3s) driving by b-emf sensing note: 1. the frequency of comm signal f comm can be designed as follows. f comm (max) = 2.5 p ?k t ?i o j (hz) (for begin of synchronous driving) (for end of synchronous driving) (1) f comm (min) = 0.5 where, p ?k t ?i o j (hz) (2) p : pole number of spindle motor (hz) k t : torque constant (kg ?cm/a) i o : start up current (a) j : moment of inertia (kg ?cm ?s 2 )
ha13566af 8 external commutation mode (full wave drive) b-emf phase comm 0 0 0 + 0 + u-current switching mode delay *2 uv w 0 + + 50 % ?50 % note: 2. provided by mpu. u-current soft switching mode
ha13566af 9 external commutation mode (half wave mode) b-emf (v cc ) phase comm 0 0 0 + uv w ?50 % 0 + u-current switching mode 0 + u-current soft switching mode
ha13566af 10 internal commutation mode (full wave mode) b-emf phase 0 0 + uv w + 50 % ?50 % 0 comm *3 note: 3. when the internal commutation mode is selected, the commutation of the motor is automatically selected at the b-emf sensing drive. but don? open the comm terminal. 0 + u-current switching mode 0 + u-current soft switching mode
ha13566af 11 internal commutation mode (half wave mode) b-emf phase 0 0 + uv w ?50 % 0 comm 0 + u-current switching mode 0 + u-current soft switching mode
ha13566af 12 application c101 c2 r2 c1 mpu spindle motor c102 r101 c103 r103 c104 r104 c106 c105 c107 r l c108 r s d1 d2 d3 serial data r1 u v w chagpmp powgood dacout r nf r nf pcomp retout vcmp retpow tab spncomp phase clk data serenab ct vcmn r s booster comm cdelay vcmin v cc2 v cc2 vref
ha13566af 13 external component parts no. recommended value purpose notes r 1 47 k w integral constant 1 r 2 integral constant 1 r 101 set retract current 2 r 103 , r 104 2.2 w for stability r nf 3 0.2 w spindle current sense 3 r s 0.47 w vcm current sense c 1 , c 2 integral constant 1 c 101 0.1 m f power supply bypass c 102 0.1 m f phase compensation for spindle driver c 103 , c 104 0.1 m f for stability c 105 0.47 m f for booster c 106 4.7 m f for booster c 107 por delay 4 c 108 retpower filter d1, d2, d3 for retract notes: 1. this integral constants can be designed as follows. w o = 2 p n o 600 (3) = j w o n o r nf 9.55kt gctl vref2 r 2 r 1 (4) c 1 = 1 10 w o r 2 (5) c 2 = 10c 1 (6) where, w o = time constant of servo loop n o = rotation number (rpm) j = moment of inertia (kg cm? 2 ) r nf = current sense resistor ( w ) gctl = control gain (see electrical characteristics) vref2 = internal reference voltage (see electrical characteristics)
ha13566af 14 2. the retract current is determined as follows. iret = vretpow ?vsatret r101 + r l + r s (7) where, r l = vcm coil resistor. vsatret = retout saturation voltage (see electrical characteristics) 3. the motor start up current i o is determined as follows. i o = (a) vref1 r nf (8) where, vref1 = current limiter reference voltage (see electrical characteristics) 4. the power on reset delay time is determined as follows. t por = 10 5 ? 107 (see electrical characteristics) (9)
ha13566af 15 absolute maximum ratings (ta = 25 c) item symbol value units notes power supply voltage v cc2 7.0 v 1 spindle current ispn 1.0 a 2 vcm current ivcm 400 ma 2 retract current iret 100 ma 2 input voltage vin 0 to v cc v power dissipation (ta = 65 c) p t 1 1.0 w 3 power dissipation (tc = 100 c) p t 2 2.0 w 3 junction temperature tj 150 c4 storage temperature range tstg ?5 to +125 c notes: 1. operating voltage range is 4.25 v to 5.75 v. 2. aso of each output transistor is shown below. operating locus must be with in the aso. 3. thermal resistance is shown below. q j-c 25 c/w q j-a 80 c/w 4. operating junction temperature range is 0 to +125 c. 1510 20 collector emitter voltage v ce (v) collector current i c (a) 4 1 0.5 0.1 t = 1 ms t = 10 ms t = 100 ms figure 6 aso of output transistor (spindle driver)
ha13566af 16 1510 20 4 1 0.5 0.1 t = 1 ms t = 10 ms t = 100 ms collector emitter voltage v ce (v) collector current i c (a) figure 7 aso of output transistor (vcm driver)
ha13566af 17 electrical characteristics (ta = 25 c, v cc = 5 v) item symbol min typ max units test conditions applicable terminal note supply current i cc1 15 20 ma enabl e m ode 3 logic input low current i il ? 10 m av il =0v 8, 9, 10, 11 input input high current i ih 10 m av ih =5v input low voltage v il 1.5 v input high voltage v ih 3.5 v clock frequency f clk 10mhz logic output output high voltage v oh 4.4 v i oh =1ma 7, 13 output low voltage v ol 0.4 v i ol =1ma spindle total saturation vsatspn 1.0 1.4 v ispn=0.8a 1, 25, 26 driver voltage 0.2 0.3 v ispn=100ma output leak current icer1 5 ma md3=1, v o =v cc +3v current limiter reference voltage vref1 139 155 171 mv r nf =1.0 w current control gain gctl ?4 ?2 ?0 db b-emf amps input sensitivity vmin 50 mvp-p 1, 25, 26 1 charge input high voltage v ihcp 3.5 v 12 pump input low voltage v ilcp 1.5 v input high current i ihcp 150 200 m av ihcp =5v input dead current i idcp 10 m a input low current i ilcp ?50 ?00 m av ilcp =0v output current charge current +44 +54 +64 m a r1=24k w 17 discharge current ?4 ?4 ?4 m a r1=24k w output cutoff current ioff 50 na reference voltage vref2 1.32 1.39 1.46 v r1=24k w 16 vcm vcm input resistor rin 42 60 78 k w 2 driver output quiescent voltage vq v cc2 /2 v cc 2 /2 +5% v cc 2 /2 +10% v 22, 23 output leak current icer2 5ma total output vsatvcm 1.0 1.35 v ivcm=400ma saturation voltage 0.8 1.0 v ivcm=200ma
ha13566af 18 electrical characteristics (ta = 25 c, v cc = 5 v) (cont) item symbol min typ max units test conditions applicable terminal note vcm resolution ires 1/512 21, 22, 23 1 driver dac output resistor rout 50 w 14 output current full i fs1 345 385 425 ma dd9=1, r s = 2, 14 2 scale i fs2 45 50 55 ma 1 w , r l =14 w gain ratio i fs1 / i fs2 7.5 8.0 8.5 offset ioff1 15 lsb dd9=1, r s = 21, 22, 23 ioff2 20 lsb 1 w , r l =14 w ioff3 80 lsb ioff1 8?off2 linearity i lin 1 lsb gain bandwidth b 40 khz dd9=1, r s = 1 w , r l =14 w 1 95 khz dd9=0, r s = 1 w , r l =14 w retract driver retpow voltage vretpow 1.4 v r s =1.0 w , r l =14 w iret=100ma 18 retout saturation voltage vsatret 1.0 1.2 v iret=100ma 19 lvi operating voltage vsd 3.55 3.85 4.15 v 3 recovery voltage vrec 3.9 4.2 4.5 v 1 por power on reset delay time por 5 1020msc 107 =0.1 m f13 otsd operating temperature tsd 125 150 c1 hysteresis thys 25 c note: 1. design guide only 2. specified by shorting between vcmin and dacout.
ha13566af 19 package dimensions 9.0 0.2 7.0 0.32 0.08 0.13 20 15 1 6 21 28 14 7 0.65 9.0 0.2 0.10 1.0 0 ?8 0.50 0.10 0.17 0.05 1.70 max m 2.25 0.10 0.95 0.10 0.575 0.575 hitachi code jedec eiaj weight (reference value) fp-28t 0.2 g 0.30 0.06 + 0.09 ?0.05 0.13 1.40 0.15 0.04 unit: mm dimension including the plating thickness base material dimension
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