Preliminary
[FEATURES]
This IC is 1 chip driver IC for spindle motor and 5 channel actuators. All of the motor and actuator of optical disk drive system (CD-ROM etc.) can be drived by only this IC. This IC has a direct PWM control system for Spindle and Slide channels drive due to reducing IC power dissipation. This IC has three voltage supply terminals (for Spindle, Slide,Focus/Tracking and Loading) , and three voltage supply can be set separately. Further more this IC has short braking select function,FG amplifier, thermal shut down circuit, standby circuit, reverse rotation detect circuit.
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
PIN CONFIGURATION SL1IN SL2IN VM2 RSL2 SL2+ SL2GND RSL1 SL1+ SL1GND W V U RSP HwHw+ HvHv+ HuHu+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
(Top View)
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
OSC MU1 LOIN+ VM3 BRS LOLO+ FOFO+ GND TO+ TO5VCC GND TOIN FOIN SPIN REF FG HB VM1
[APPLICATION]
Package outline : 42 PIN POWER SSOP (42P9R-B)
CD-ROM, DVD, DVD-ROM, DVD-RAM ,Optical disc related system,etc [BLOCK DIAGRAM]
s FG FG Reverse Detect
s
s
s
HU+ HUHV+ HVHW+ HWHall Bias CTL amp. Direction comp. Current comp. CTL amp. Direction comp. Current comp. CTL amp. Direction comp. Current comp. TSD BIAS MU1 120 MATRIX Logic Logic
SPIN REF SL1IN SL2IN
Frequency generator
OSC
5V power supply FOIN TOIN Regulator
X1 2
X12
X8
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REV990728
Preliminary
[PIN FUNCTION]
TERMINAL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 SYMBOL SL1IN SL2IN VM2 RSL2 SL2+ SL2GND RSL1 SL1+ SL1GND W V U RSP HWHW+ HVHV+ HUHU+ TERMINAL FUNCTION
Slide control voltage input 1 Slide control voltage input 2 Motor Power Suppry 2(for Slide) Slide current sense 2 Slide non-inverted output 2 Slide inverted output 2
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
TERMINAL 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
SYMBOL OSC MU1 LOIN+ VM3 BRS LOLO+ FOFO+ GND TO+ TO5VCC GND TOIN FOIN SPIN REF FG HB VM1
TERMINAL FUNCTION
PWM carrier oscilation set mute 1 Loading control input(+) Power Supply3 (for Loading) Brake select control terminal Loading inverted output Loading non-inverted output Focus inverted output Focus non-inverted output
GND
Slide current sense 1 Slide non-inverted output 1 Slide inverted output 1
GND
Tracking non-inverted output Tracking inverted output 5V Power Supply(for FS ,TS)
GND
Motor drive output W Motor drive output V Motor drive output U Spindle current sensie HW- sensor amp. input HW+ sensor amp. input HV- sensor amp. input HV+ sensor amp. input HU- sensor amp. input HU+ sensor amp. input
GND
Tracking control voltage input Focus control voltage input Spindle control voltage input Reference voltage input Frequency generator output Bias for Hall Sensor Motor Power Suppry 1(for Spindle)
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REV990728
Preliminary
[ABSOLUTE MAXIMUM RATING]
SYMBOL PARAMETER 5V power supply Motor power supply 1 Motor power supply 2 Motor power supply 3 Motor Output Current A Motor Output Current B Motor Output Current C Maximum input voltage of terminals Power dissipation Thermal derating Junction temperature Operating temperature Storage temperature Slide output current (Ta=25C ) CONDITIONS Focus and Tracking power supply Spindle power supply Slide power supply
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
RATING
Unit
5VCC VM1 VM2 VM3 IoA IoB IoC Vin Pt K Tj Topr Tstg
7 15 15 15 1.0 1.2 0.5 0 to 5VCC 2.6 20.8 150 -20 to +75 -40 to +150
V V V V A A A V W mW / C C C C
Loading power supply Focus,Tracking and Loading output current *note 1 Spindle output current *note 1 *note 1
MU1,Hw-,Hw+,Hv,Hv+,Hu-,Hu+,REF,SPIN,BRS TOIN,FOIN,OSC,SLIN1,SLIN2,LOIN+ Free Air and on the grass epoxy board Free Air and on the grass epoxy board
*note1 ; The ICs must be operated within the Pt (power dissipation) or the area of safety operation The spindle output terminal is needed external shottky diode between each output and GND when it is used above 0.6A. Discription(IoA) is case of with external shottky diode.
[RECOMMENDED OPERATING CONDITIONS] (Ta=25C )
LIMITS SYMBOL PARAMETER VM1 power supply (fot Spindle) VM2 power supply(for Slide) VM3 power supply(for Loading) 5V power supply(for FS,TS) Focus, Tracking and Loading Output Current
Spindle Output Current Slide Output Current
minimum 6 4.5 4.5 4.5
typical 12 12 12 5 0.5 0.5 0.25
maximum 13.2 13.2 13.2 7 0.8 1.0 0.4 120
Unit V V V V A A A KHz
VM1 VM2 VM3
5VCC IoA IoB IoC Fosc
*note 2
PWM carrier frequency
30
*note2 The spindle output terminal is needed external shottky diode between each output and GND when it is used above 0.6A. Discription(IoA) is case of with external shottky diode.
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REV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
[THERMAL DERATING] 6.0
(W)
5.0 4.0
using N-type board
using P-type board 3.0 2.0 1.0
This IC's package is POWER-SSOP, so improving the board on which the IC is mounted enables a large power dissipation without a heat sink. For example, using an 1 layer glass epoxy resin board, the IC's power dissipation is 2.6W at least. And it comes to 3.6W by using an improved 2 layer board. The information of the N, P type board is shown in attached.
0
25
50
75
100
Ta (C)
125
150
Ambient Temperature
[ELECTRICAL CHARACTERISTICS]
Common
(Ta=25C, 5VCC=VM3=5V,VM1=VM2=12V unless otherwise noted.)
LIMITS
SYMBOL Icc1 Icc2 Fosc PWM carrier frequency VinREF IinREF VMULO VMUHI IMU BRSLO BRSHI IBRS REF input voltage range REF input voltage range MUTE terminal low voltage MUTE terminal high voltage Mute terminal input current BRS terminal low voltage BRS terminal high voltage BRS terminal input current VREF=1.65V MU1 MU1 MU1 BRS BRS BRS at 5V input voltage at 5V input voltage PARAMETER CONDITIONS
5VCC,VM1, VM2 ,VM3 current 5VCC,VM1, VM2 ,VM3 current under Sleep
MIN
TYP
MAX
Unit
mA A KHz
Supply current Sleep current
60 0 65 1.0 -10
78 30
(MU1 = 0V). OSC : with 330pF
3.3 +10 0.8
V A V V
3.0 500 0.8 3.0 430
A V V A
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REV990728
Preliminary
[ELECTRICAL CHARACTERISTICS]
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
Spindle
(Ta=25C, 5VCC=VM3=5V,VM1=VM2=12V unless otherwise noted.) LIMITS
SYMBOL Vdyc1 Vdead1-
PARAMETER Dynamic range of output
Control voltage dead zone 1
CONDITIONS MIN TYP MAX
Unit
V
Io=0.5 [A]
SPIN[10.3 -80 0 0 0.85 0.4 0.22 1.3]
10.8 -40 +40 0 +80 5 1.0 0.5 0.28 1.15 0.6 0.34 3.7
mV mV V V/V V V V
Vdead1+ Vin1 Gvo1 Vlim1F Vlim1R
Control voltage input range 1 SPIN
Control gain 1 Control limit 1F Control limit 1R
Gio1=Gvo1/ Rs [A/V] Ilim1F=Vlim1F/ Rs [A] Ilim1R=Vlim1R/ Rs [A] Hu+,Hu-,Hv+,Hv-,Hw+ ,Hw-
VHcom
Hall sensor amp. common mode input range
VHmin
Hall sensor amp.input signal level
Hu+,Hu-,Hv+,Hv-,Hw+ ,Hw-
60 0.6 0.85 1.2 30
mVp-p
VHB IHB
HB output voltage HB terminal sink current
at Load current (IHB)=10mA MU1=5V
V mA
Slide 1,2
(Ta=25C, 5VCC=VM3=5V,VM1=VM2=12V unless otherwise noted.)
LIMITS
SYMBOL Vdyc2 Vdead2Control voltage dead zone 2
PARAMETER
Dynamic range of output
CONDITIONS Io=0.5 [A]
SL1IN,Sl2IN < REF REF < SL1IN ,SL2IN at VM2=5[V] at VM2=12[V]
MIN
TYP
MAX
Unit
V
3.3 10.3 -80 0 0 0.85 0.43
3.8 10.8 -40 +40 0 +80 5 1.0 0.5 1.0 2.0 3.0 1.15 0.58 2.0 3.5 6.0 100
mV mV V V/V V
Vdead2+ Vin2 Gvo2 Vlim2 Tdon Tdoff Tdsw Ileak
Control voltage input range 2
SL1IN,SL2IN
Control gain 2 Control limit 2 Output turn-on delay Output turn-off delay Output switching delay Output leak current
Gio2=Gvo2/ Rs [A/V] Ilim2=Vlim2/ Rs [A]
sec sec sec A
MU1=5v
-100 (5 / 17)
REV990728
Preliminary
[ELECTRICAL CHARACTERISTICS]
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
Loading
(Ta=25C, 5VCC=VM3=5V,VM1=VM2=12V unless otherwise noted.) LIMITS
SYMBOL Vdyc3-1
PARAMETER
CONDITIONS Io=0.5[A] VM1=12[V]
MIN
TYP
MAX
Unit
V
VM3=5[V] VM3=12[V]
3.9 6.9 3.3 0 16.7 -50
4.2 7.6 3.5 5 18.1 0 19.3 +50
Dynamic range of output
Vdyc3-2 Dynamic range of output Vin3 Gvo3 Voff1
Control voltage input range3
R=5.4[W] VM3=4.75V , VM1=12V LOIN+
(LO+) - (LO-) (LOIN+) - (REF) (LO+) - (LO-) at LOIN+=REF=1.65V
V V
Control gain 3 Output offset voltage
dB
mV
Focus / Tracking
(Ta=25C, 5VCC=VM3=5V,VM1=VM2=12V unless otherwise noted.) LIMITS
SYMBOL Vdyc4
PARAMETER
CONDITIONS Io=0.5[A] VM1=12[V] FOIN,TOIN
(FO+) -(FO-) FOIN-REF (TO+) -(TO-) TOIN-REF
MIN
TYP
MAX
Unit
V
Dynamic range of output Vin4 Gvo4 Voff2
3.8 0 20.2 -47
4.2 5 21.6 0 22.8 +47
Control voltage input range 4
V dB mV
Control gain 4 Output offset voltage
(FO+) -(FO-) at REF=FOIN=1.65V (TO+) -(TO-) at REF=TOIN=1.65V
NOTE : This IC need condenser between each supply lines and GND for stoped Oscillation.
[THERMAL CHARACTERISTICS]
FUNCTION START TEMPERATURE OF IC
FUNCTION STOP TEMPERATURE OF IC
SYMBOL
PARAMETER
MIN TYP MAX MIN TYP MAX
Unit
TSD
Thermal Shut Down
160
130
C
*note3 This TSD function start temperature doesn't show the guaranteed max. temperature of the devices. The guranteed max. temperature is Tj max. which is shown in "9. ABSOLUTE MAXIMUM RATING". The TSD function is a thermal protection in case the temperature of the devices goes up above Tjmax because of wrong use. And these TSD temperature are the target temperatures for circuit design, not the guranteed temperatures. (The TSD function of all the devices is not checked by a test in high temperature.)
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REV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
Standby function
Logic control MU1 Loading Slide1 SELECT2 H On On SELECT1 L/Open Off Off
Drive Slide2 On Off
channel Focus Tracking Spindle On On On Off Off Off
This IC has MUTE terminal (MU1). It is possible to control ON / OFF of the channel by external logic inputs. In case of SELECT1, the bias of all circuit becomes OFF. Therefore, this mode is available in order to reduce the power dissipation when the waiting mode. In case of SELECT2,the bias of all channel becomes ON.
Brake select function BRS Hi L / Open SPIN < REF Reverse Brake Short Brake REF < SPIN Forward Forward
This IC has BRS terminal (BRS). It is possible for a braking timiming of Spindle drive to select which the short brake or the reverse brake by BRS. It shuould select the short brake in case of high speed system and please change to the reverse brake when the rotation speed becomes enough low. It is available when the SPIN voltage is low than the reference voltage.
Loading channel
The loading channel is the circuit of BTL voltage drive. This circuit has the referential input. Output swing is determined with Vin x 8. Also,it is possible for this channel to use for the slide motor , the focus coil and the tracking coil. The input terminal is high impedance. It is possible to do variable a gain by external resistor. In case of one MCU port, if use three state port, it is possible for this channel to have the stop function. VM3 LO+ LOIN+ + LOADING Channel REF LOReverse Vo Forward
M
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REV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
LO-
Output voltage [V]
LO+
+ Coil -
VM3 2
Coil
Vo
Gvo = 8 [v/v] Vo=[LO+] - [LO-] =8 x ([LOIN+] - [REF]) LO+
[LOIN+] - [REF] (V)
LO-
application.1 (MCU : One port H/Z/L control)
Logic control Situation of loading channel P1 5v Forward rotation
Z (Hi impedance)
Output voltage swing Vo= 8x(5[V]-REF[V]) xR2/(R1+R2) Vo= 0 [V] Vo= -8x(5[V]-REF[V]) xR2/(R1+R2)
Short brake --> Stop Reverse rotation
0
5v
R1
P1
Z 0v
P1
R2
LOIN+
REF
application.1 (One port H/Z/L control)
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REV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
SPINDLE channel
The relationship between the differential voltage between SPIN and REF and the torque is shown in right Figure. The voltage gain[Gvo] is 1.0 [V/V]. The current gain[Gio] is 2.0[A/V] (at sensing resistor : 0.5 ohm,and R1=,R2=0ohm) in forward torque directions, and the dead zone is from 0mV to 80mV (at R1=,R2=0ohm) . The coil current gain under the reverse torque is the same with in forward torque directions.And the limitation function gets on when the differential voltage of VM1(12V) to RSP is 0.5V. Therefore current-gain-control and current-limit of this IC is determined with sensing resister value, and more detail control can be determined with setting a gain-resister outer this IC as below.
current limit
Forward Torque
lim1F
Dead zone
Gio
CTL -REF (V)
Gio
Dead zone
lim1R
current limit
Reverse Torque
The example of current-gain and current-limit of SPINDLE.
Rs []
Ilim1F Ilim1R [A] [A] 1.00 0.66 0.50 0.56 0.37 0.28
Gio* [A/V]
R1= R2=0 ohm R1=R2 R1=2 * R2
0.50 0.75 1.00
2.00 1.33 1.00
1.00 0.66 0.50
0.66 0.44 0.33
Gio*= R1 / [(R1+R2) * Rs] [A/V] VM1 Rs RSP R2 CTL R1 1.65v REF SPIN 5V Rh
HB HU+ HUHV+ HVHW+ HWU V W
M
GND
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REV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
SLIDE channel
The relationship between the differential voltage between SLIN and REF and the torque is shown in right Figure. The voltage gain[Gvo] is 1.0 [V/V]. The current gain is 2.0[A/V] (at sensing resistor : 0.5 ohm and R1=,R2=0ohm) in forward torque directions, and the dead zone is from 0mV to 80mV (at R1=,R2=0ohm)). The coil current gain under the reverse torque is the same with in forward torque directions.And the limitation function gets on when the differential voltage of VM2(12V) to RSL is 0.5V. Therefore current-gain-control and current-limit of this IC is determined with sensing resister value.
Forward
current limit
Gio
Dead zone SL*IN -REF (V) Dead zone
Gio
Reverse
VM2 VM2
current limit
Rs RSL1 Forward R2 CTL R1 1.65v REF SL1IN
Rs RSL2 Forward R2 CTL SL2IN
SL1+
SL2+
M
SL1GND
Reverse 1.65v
R1 REF
M
SL2GND
Reverse
The example of current-gain and current-limit of SLIDE.
Gio* [A/V] Rs [] Ilim [A]
R1= R2=0 ohm R1=R2 R1=2 * R2
0.50 0.75 1.00
1.00 0.66 0.50
2.00 1.33 1.00
1.00 0.66 0.50
0.66 0.44 0.33
Gio*= R1 / [(R1+R2) * Rs] [A/V]
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REV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
FOCUS / TRACKING channel
The focus and tracking channel is the voltage control drive using BTL . The focus and tracking is the same composition. The relationship between the differential voltage between FOIN and REF and the output voltage is shown in below Figure. The voltage gain [Gvo] is 5.0 [V/V].
FOIN
R
6R
FO-
REF R 5VCC 6R
R Coil
R R FO+ R
FO-
Output voltage [V]
FO+
+ Coil -
5VCC 2
Coil
Vo
Gvo = 12 [v/v]
FOIN - REF (V)
Vo=[FO+] - [FO-] =12 x (FOIN - REF)
FO+ (11 / 17) FOREV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
Direct PWM operation The spindle and the slide channel is controlled by the direct PWM control. Also,built-in the current limit circuit. This IC controls the motor current directly.
FORWARD Current path timing 1.
FORWARD Current path timing 2.
VM2 Rs RSL
Current path 1
VM2 Rs RSL
SL+
M
SL-
SL+
M
SL-
GND
Current path 2
GND
Current path 1
Current path 2
Control value
Control value Io=Vrs / Rs
Motor current carrier period
Time
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REV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
PWM carrier frequency setting
PWM carrier frequency is decided by charging and discharging the capacitor that is connected to OSC terminal outer IC. Examination of the relationship the capacitor connected to OSC terminal and PWM carrier frequency is given in following table.
Capacitor [pF] Carrier Frequency [KHz]
820 28
750 30
330 65
220 90
180 110
130 140
110 160
*note) This PWM carrier frequency is TYP value.
Recommendation of SHORT BRAKE MODE at SPINDLE DRIVE
This IC has two brake mode, PWM-BRAKE-MODE and SHORT-BRAKE-MODE. In this IC recommendation, SHORTBRAKE-MODE is superior to PWM-BRAKE-MODE to reducing the power dissipation and to avoid braking down of this IC. (By excessive reverse torque current in braking a motor with PWM-BRAKE from high-speed-rotation with being excessive Back-EMF, this IC could be broken.)
The relationship between hall-amplifier-input and output-current-commutation at SPINDLE DRIVE
The relationship between the hall elements and the motor output current is shown in bellow Figure.
Hw+ Hall input Hv+ Hu+ Hall elements
U V W W V U U V W
Outer roter
+
Output current
V
U
W
V
REVERSE SPIN < REF
0 U W V U W FORWARD SPIN > REF
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REV990728
Preliminary
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
FG function at SPINDLE DRIVE
The FG terminal outputs the square pulse signal synchronizing with the Hall inputs [Hv+, Hv-] timing. And, the FG terminal is open-collector output.
Phase delay circuit at SLIDE
Phase delay circuit is built in the IC to detect an output spike current, when the motor current direction is switching. In switching the motor current direction, Phase delay circuit switch-off all output trangister of H-bridge for 3sec.
Output current setting at SLIDE
In this IC, since output tranjister is NPN-type tranjister, motor coil current (Io) is larger than sensing resistance current about 10mA (TYP.) according to base current of output tranjister. Therefore please design output current with consisting these base current.
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REV990728
Preliminary
I/O circuit * FOIN, TOIN, SPIN LOIN+, OPIN* Hu+, HuHv+, HvHw+, HwREF 5VCC 2K * BRS 2K 8K 10K * HB 5VCC * FG 5VCC 5VCC RSP * VM1, RSP, U, V, W VM1 * MU1
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
5VCC 2K 8K 30K 5VCC 4K 10K * OSC 5VCC 2K 2K 2K
5VCC 2K
U
V
W
GND * 5VCC, VM3+, FO+, FO-, TO+, TO-, LO+, LO5VCC 9Vmax VM1
INSIDE REG
VM3
LO+
LO-
TO+
TO-
FO+
FO-
GND * VM2, RSL, SL1+, SL1-, SL2+, SL2VM2 RSL1 RSL1
SL1+
SL1-
SL2+
SL2-
GND ( 15 / 17) REV990728
Preliminary
[The boards for thermal derating evaluation]
Board material
MITSUBISHI SEMICONDUCTORS
M63021FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
1st layer [TOP view] Glass-epoxy FR-4
2nd layer [BACK view]
Size
70x70mm
thickness
N-type board
t=1.6mm
1 and 2 layers
[2 layer]
material : copper thickness : t=18m O-type board
[2 layer]
P-type board
[1 layer]
POWER-SSOP 42P9R-B
Heat sink Lead
mounted IC
Chip
Evaluation board
( 16 / 17) REV990728
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