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AMC DOC. #: AMC5902_B March 2004
AMC5902
6CH Motor Driver for CD-ROM, DVD-ROM
FEATURES Designed by advanced BiCMOS process, low power and low chip temperature. Patented package to reduce chip temperature. 3 BTL drivers, 2 PWM drivers and 3 phase spindle motor driver. Built-in triangular-wave generator. 0 to 5V wide voltage range for input pins Thermal shutdown with 30C hysteresis. Built-in current limit, hall bias,short brake, FOUT output and reverse protection circuit.
ADD MICROTECH CORP.
DESCRIPTION The AMC5902 is a monolithic chip with 6 channel motor drivers designed by advanced BiCMOS process technology. The AMC5902 contains 3 BTL drivers,2 PWM drivers and a 3-phase spindle motor driver. The AMC5902 is the best fit for modern optical disk driver system which has spindle motor and all actuators. The AMC5902 contains a direct PWM control system for spindle and two slide channels drive thus that the total power consumption can be reduced. Besides, voltage supplies for spindle, slide, focus/tracking and loading can be set separately. Further more, the two control modes -ON/OFF of loading, FOUT amplifier, brake mode select of spindle driver, standy mode, thermal shut down circuit are internally designed in. These features make the AMC5902 an ideal device for optical disc related systems.
APPLICATIONS CD-RW, DVD-RW CD-ROM, DVD, DVD-ROM Optical Disc Related Systems.
HU+ HUHV+ HVHW+ HWHB PGND1 U VCC1 V GND GND GND GND GND PGND2 W VCC2 CSSP FOUT CTL1 CTL2 SPIN DGND LDIN VREF
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
PACKAGE PIN OUT
54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28
VCC6 FOIN TKIN VCC4 LDO+ LDOTKO+ TKOFO+ FOVCC5 GND GND GND GND GND AGND SO1+ SO1SO2+ SO2SLGND CS2 CS1 VCC3 IN2SL IN1SL
TSOP-54L (TOP VIEW) ORDER INFORMATION TA (C)
AMC 5902 DS
0 to 70
Plastic TSOP 54-Pin AMC5902DS AMC5902DSF
DS
Note: Package is available with Tape & Reel. Append the letter "T" to part number (i.e. AMC5902DST). The letter "F" is marked for Lead Free process .
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
TYPICAL APPLICATION
AMC5902
1 1 2 2 3 3 4 5 5
HU+ HUHV+ HVHW+ HWHB PGND1 U VCC1
VCC6 FOIN TKIN VCC4 LDO+ LDOTKO+ TKOFO+ FO-
54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28
R7 R8
FOCUS IN TRACKING IN
M
R1
6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
M TRACKING LOADING
FOCUS
AMC5902DS
V GND GND GND GND GND PGND2 W VCC2 CSSP FOUT CTL1 CTL2 SPIN DGND LDIN VREF
VCC5 GND GND GND GND GND AGND SO1+ SO1SO2+ SO2SLGND CS2 CS1 VCC3 IN2SL IN1SL
R2
5V
R3
12V
R4
M SLIDE
-COM -COM SPINDLE IN LOADING IN
R5
R9 R10 R11 R12
R6 1.65V
SLIDE IN 2 SLIDE IN 1
12V
Example values for external parts
Part name R1 R2 R3 R4 R5 R6 R7 R8 R9, R10 R11, R12 Value(typ) 33 100 0.33 10k 0 8.2k 6.6k 20k 1 12k Unit Depends on application Depends on application Illim=1.42A,Gain=3.0A/V Depends on application Depends on application. Depends on application Depends on application Depends on application llim=0.47A,Gain=0.47A/V Depends on application Remark
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
AMC5902
ABSOLUTE MAXIMUM RATINGS (Note 1) Limits Parameter Symbol POWER MOS power supply voltage VCC1,VCC2,CS1,CS2 15 Preblock/BTL powerblock power supply voltage VCC3,VCC4,VCC5 15 PWM control blockpower supply voltage VCC6 7 Operating junction temperature Tj 150 Storage temperature range Tstg -40 to 150 Lead Temperature (soldering, 10 seconds) 260 Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. RECOMMENDED OPERATING CONDITIONS Parameter POWER MOS power supply voltage POWER MOS power supply voltage Internal block/BTL power block power supply voltage Power supply (for focus and tracking) PWM control block power supply voltage Tracking, focus and loading output current Spindle output current Slide output current Focus/Tracking output current an 1/10 with a maximum on time of 5msec. Symbol VCC1,VCC2 CS1,CS2 VCC3,VCC4 VCC5 VCC6 IO1 IO2 IO3 IO4 Min Typ. Max
Unit V V V C C C
Unit V V V V V A A A A
VCC4 VCC3 VCC5 12 14 4.3 5.0 VCC4 4.3 5.0 6.0 0.5 0.8 1.2 *2.5 0.5 0.8 0.5 0.8
*The current is guaranteed 3.0A in case of the current is turned on/off in a duty ratio of
Package
JA (C /W )
Derating factor ( mW/C ), TA 25OC
THERMAL DATA TA 25C
Power rating(mW) 2200
TA=70C Power rating(mW) 1419
TA= 85C Power rating (mW) 1158
DS 57.6 17.36 Note: TJ = TA + PD x JA PD: Power dissipation. JA: Thermal resistance from Junction to Case. DF : Derating factor, JA = 1 / DF 1. 2. 3.
The JA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above assume no ambient airflow. If power consumption is over above rating, adequate heat sink is required to dissipate heat.
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
BLOCK DIAGRAM
VCC1 CSSP U V VCC2 W SO1+ SO1VCC3 SO2+ SO2CS1 CS2
AMC5902
FOUT HU+ HUHV+ HVHW+ HWHB
FG
Reverse Detect
120 MATRIX
Logic
Logic
Hall Bias CTL Amp Direction Comp. R2 OSC R1 R4 R3 R5 TSD R6 Current Amp CTL Amp Direction Comp. Current Amp CTL Amp Direction Comp. STBY/BRAKE CONTROL Current Amp
VCC6 VREF CTL1 CTL2
SPIN IN1SL IN2SL TKIN FOIN
R 2R
GND VCC5 LDIN VCC4 LDOx 7.5
R
2R
R
2R
x 7.5
x 7.5
LDO+
TKO+ TKO-
Reference values for internal components
Part name R1, R2 R3, R4, R5, R6 R Value(typ) 15k 47k 47k Unit
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FO+ FO-
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
AMC5902
PIN DESCRIPTION Pin No. Pin Name Pin Function Pin No. Pin Name 1 HU+ HU+ sensor Amp. input 54 VCC6 2 HUHU- sensor Amp. input 53 FOIN 3 HV+ HV+ sensor Amp. input 52 TKIN 4 HVHV- sensor Amp. input 51 VCC4 5 HW+ HW+ sensor Amp. input 50 LDO+ 6 HWHW- sensor Amp. input 49 LDO7 HB Bias for Hall sensor 48 TKO+ 8 PGND1 Spindle driver power ground 1 47 TKO9 U Motor drive output U 46 FO+ 10 VCC1 Motor power supply 1 (for spindle) 45 FO11 V Motor drive output V 44 VCC5 12 GND Ground 43 GND 13 GND Ground 42 GND 14 GND Ground 41 GND 15 GND Ground 40 GND 16 GND Ground 39 GND 17 PGND2 Spindle driver power ground 2 38 AGND 18 W Motor drive output W 37 SO1+ 19 VCC2 Motor power supply 1 (for spindle) 36 SO120 CSSP Spindle current sense 35 SO2+ 21 FOUT Frequency generator output 34 SO222 CTL1 Control input 1 33 SLGND 23 CTL2 Control input 2 32 CS2 24 SPIN Spindle control input 31 CS1 25 DGND PWM block pre-ground 30 VCC3 26 LDIN Loading control input 29 IN2SL 27 VREF Reference 28 IN1SL
Pin Function PWM block control power supply Focus control input Tracking control input Motor power supply 4 (for loading) Loading non-inverted output Loading inverted output Tracking non-inverted output Tracking inverted output Focus non-inverted output Focus inverted output 5V Power supply (for focus, tracking) Ground Ground Ground Ground Ground Ground Slide non-inverted output 1 Slide inverted output 1 Slide non-inverted output 2 Slide inverted output 2 Slide driver power ground Slide current sense 2 Slide current sense 1 Motor power supply 3 (for slide) Slide control voltage input 2 Slide control voltage input 1
DC ELECTRICAL CHARACTERISTICS Unless otherwise specified, these specifications apply to operating ambient temperature TA = 25C, VCC6 = VCC5= 5V, VCC3 = VCC4 = 12V, Vref =1.65V, RSP=0.33,RSL1=RSL2=0.5. Parameter Common Section Quiescent current 1 Quiescent current 2 Quiescent current 3 Standy-on current 1 Standy-on current 2 Symbol IQ1 IQ2 IQ3 IST1 IST2 Test Conditions VCC4 (CTL1=L,CTL2=H) VCC4 (CTL1=H,CTL2=L) VCC6 (CTL1=L,CTL2=H) VCC4 (CTL1=L,CTL2=L) VCC6 (CTL1=L,CTL2=L) AMC5901 Min Typ. Max 18 14 3.5 0.2 23 16 4.9 0.3 0.1 Units mA mA mA mA mA
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
AMC5902
DC ELECTRICAL CHARACTERISTICS (continued) Unless otherwise specified, these specifications apply to operating ambient temperature TA = 25C, VCC6 = VCC5= 5V, VCC3 = VCC4 = 12V, VREF =1.65V, RSP=0.33,RSL1=RSL2=0.5. Parameter Spindle Section Control voltage dead zone Spindle gain control Spindle control limit Output ON resistor(upper) Output ON resistor(lower) PWM freguency Hall sensor common mode input range Hall sensor differential input range HBIAS output voltage HBIAS sink current FOUT high voltage FOUT low voltage Slide Section Control voltage dead zone Slide gain control Slide control limit Output ON resistor(upper) Output ON resistor(lower) PWM freguency Loading Section Output offset voltage Output saturation voltage "H" Output saturation voltage "L" Loading gain control Focus / Tracking Section Output offset voltage Output saturation voltage "H" Output saturation voltage "L" Actuator gain control CTL1,CTL2 Input high voltage Input low voltage Symbol VD_SP Av_SP Gm_SP VLIM_SP ILIM_SP RONUSP Test Conditions Min 20 0.8 2.4 0.4 1.2 1 IHB= 10mA 100k pull up to VCC6 50 0.7 15 0.4 0.8 0.4 0.8 -50 16.0 -50 16.0 2.0 AMC5902 Typ. Max 50 1.0 3.0 0.47 1.42 0.6 0.3 110 1.15 1 4.9 0.1 40 0.5 1.0 0.47 0.94 1.5 0.75 110 1.1 0.46 17.5 0.45 0.45 17.5 90 1.2 3.6 0.54 1.64 1.0 0.5 4 1.6 5 65 0.6 1.2 0.54 1.08 1.8 1.0 50 1.4 0.8 19.0 50 0.8 0.8 19.0 0.5 Units mV V/V A/V V A KHz V mVpp V A V V mV V/V A/V V A KHz mV V V dB mV V V dB V V
RSP=0.33 ILIM_SP = VLIM_SP / RS RSP=0.33 IL=0.5A
RONLSP IL=-0.5A Fosc VCMH VDIH VOHB IHB VFGH VFGL
VD_SL Av_SL Gm_SL RS=0.5 VLIM_SL ILIM_SL = VLIM_SL / RS ILIM_SL RS=0.5 RONUSL IL=0.5A RONLSL IL=-0.5A Fosc VOFF V_SHLO IL=0.5A, VCC4(OUT+) V_SLLO IL=-0.5A, (OUT-)GND AV_LO VOFF V_SHFO IL=0.5A, VCC5(OUT+) V_SLFO IL=-0.5A, (OUT-)GND AV_FO V_H V_L
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
Symbol Test Conditions AMC5902 Min 0.4 3.4 TSD_OFF TSD_ON OUTPUT CIRCUIT Typ. 0.7 3.8 150 175 Max 1.0 4.2 Units V V C C
AMC5902
Parameter Others VREF drop muting VCC4/VCC6 drop muting Thermal Characteristics Thermal shut down temperature
Spindle motor driver output
VCC1 (VCC2)
PWM driver output slide 1,2
CS1 (CS2)
W
V
U
(SO1-) SO2-
(SO1+) SO2+
PGND1 PGND2
SLGND
BTL driver output LDO
BTL driver output FO, TKO
VCC4
VCC5
VCC4
VCC4
VCC5
VCC5
(FO-) LDOLDO+ TKO-
(FO+) TKO+
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
APPLICATION INFORMATION
AMC5902
Spindle channel
The spindle motor torque is controlled by the differential voltage of SPIN and VREF. The voltage gain, AV_SP , is 1.0(V/V). The limitation function starts to take effect when the differential voltage of VCC1 and CSSP is over 0.47V. Current gain is equal to AV_SP / RSP.
Slide channel
The slide motor torque is controlled by the differential voltage of IN1SL (IN2SL) and VREF. The voltage gain, AV_SL , is 0.5(V/V). The limitation function starts to take effect when the differential voltage of VCC3-CS1(CS2) is over 0.47V. Current gain is equal to AV_SL / RSL.
Iop
VO4/RsL VO1/RsL
Reverse
Forward
Iosp IOSL
VO3/RsL
VO2/RsL
Current gain CNTL-VREF (V)
Iop
Iosp or IOSL
VI4
VI3
VI2
Dead zone
VI1
Iop..the peak current of Iosp or IoSL
Spindle driver VI1=150mV, VI2=110mV, VI4=-150mV, VI3=-110mV Gm(+)=(VO1-VO2)/(150-110)/0.33 Gm(-)=(VO4 -VO3)/(150-110)/0.33
Slide driver VI1=250mV, VI2=130mV, VI4=-250mV, VI3=-130mV Gm(+)=(VO1-VO2)/(250-130)/0.5 Gm(-)=(VO4 -VO3)/(250-130)/0.5
Gain expression
Input-output gain Gm(A/V) Output-limit current Gain with the added resistor Gm(A/V)
VCC1 VCC2 RSP CSSP R1 HB HU+ HUHV+ HVHW+ HWU V W 8
Spindle 1.0/Rsp 0.47/Rsp 15k/[(R1+15k)xRSP]
Slide 0.5/RsL 0.47/RsL 0.5x15k/[(R1+47k)xRSL]
VCC3
RSL CS1 (CS2) CNTL R1 IN1SL (IN2SL) SO1+ (SO2+)
M
Forward
CNTL
SPIN
SO1(SO2-) GND
PGND1,2
Reverse
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
APPLICATION INFORMATION (continued)
AMC5902
Loading control
The loading output voltage is set internally to be 7.5 x (LDIN-VREF). With LDIN is higher/ equal/ lower to VREF,the motor can be set to Forward/ Short brake/ Reverse functions..
VCC4 Forward Load input R1 LDO+ LDIN Loading Channel LDOReverse
M
Focus / tracking channel
The focus and tracking output voltage is set internally to be 7.5 x (FOIN-VREF). With FOIN (TKIN) is higher/ equal/ lower to VREF, the motor can be set to Forward/ Short brake/ Reverse function.
VCC5 Forward FOIN Focus Channel FO+
Focus input
R1
FOReverse
Gain expression
Loading (LO+ - LO-) Focus (FO+ - FO-) Tracking (TKO+ - TKO-) Gain with the added resistor Av(V/V) 7.5x 47k/(R1+47k) 7.5x 47k/(R1+47k) 7.5x 47k/(R1+47k)
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
APPLICATION INFORMATION (continued)
AMC5902
Table of chip control function
1.Circuit control terminal 1 and 2 (CTL1-pin22 and CTL2-pin23) The device can be set to standby mode to reduce power dissipation, and spindle-driver braking mode can be switch on/off by inputting combinations of on/off to these terminals.
CTL1 L H O...ON CTL2 L L H X...OFF Spindle X X O Slide X X O Focus X X O Tracking X X O Loading X O X
CTL1 L H
CTL2 H H
SPIN >VREF Forward-rotation mode Forward-rotation mode
SPIN < VREF Reverse-rotation braking mode Short-circuit braking mode
1.1 Reverse-rotation braking mode (spindle) A reverse-rotation torque is applied when SPIN < VREF. Reverse-rotation is detected with SPIN input and Hall input.If the spindle detects reverse rotation when SPIN < VREF, all outputs are shorted out to GND. 1.2 Short-circuit braking mode (spindle) All the spindle driver outputs are shorted out to GND when SPIN < VREF. 1.3 Standby mode The IC is brought into standby mode,and its power dissipation can be limited. 1.4 Driving muting All the output channels except the loading are muted and their outputs are turn off 2.Muting functions 2.1 Over voltage protection circuit When the voltage at VCC4 terminal drops to upper than 15.5V(typ.), the output of only the spindle block is turned off. 2.2 VCC4/VCC6-drop muting When the voltages at VCC4 terminal and VCC6 terminal drop to lower than 3.8V(typ.), the outputs of all the channels are turned off. 2.3 VREF-drop muting When the voltage at VREF terminal drops to a value lower than 0.7V(typ.),the outputs of all the channels are turned off.Set the VREF terminal voltage to larger than 1.0V. 3 PWM oscillation frequency The PWM oscillation for driving the spindle and slide is free running.The oscillation frequency is 100kHz(typ.). 4. FOUT function The FOUT terminal outputs the square pulse signal synchronizing with the Hall inputs (HW+, HW-) timing. The FOUT terminal is an open-collector output.
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
APPLICATION INFORMATION (continued)
AMC5902
5. The waveforms between U V W output-current and hall-amplifier-input
Forward rotation mode Reverse rotation mode Short brake Reverse protection
FWD SPIN
VREF
FWD
FWD
REV
HU+
HU-
HV+
HV-
HW+
HW-
H Z L
U
H Z L
V
H
W
Z L
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
APPLICATION INFORMATION (continued)
AMC5902
When power dissipation is over 1.4W (TA=70C), additioned heat sink is required to control chip junction temperature below 150C. The power TSOP package has 10 GND pins connected to internal leadframe pad for enhanced power dissipation (12-16,39-43) performance. Using bigger area of ground plane (as heat sink) can reduce chip temperature significantly. TJ = TA + PD (JC + CA ) For power TSOP package, JC = 6.1 C / W For further improvement of heat problem, extra heat sink can be used by clipping it to the thermal pad on the top.
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
APPLICATION INFORMATION (continued)
AMC5902
54-Lead Thin Small Outline Plakage (TSOP)
INCHES MIN A TYP MAX 0.047 0.006 0.041 MILLIMETERS MIN 0.05 0.95 TYP 0.1 1.00 0.35 MAX 1.20 0.15 1.05 -
1
A1 0.002 0.004 A2 0.037 0.039 b D E H e L L1 Z
-
0.014
0.871 0.875 0.396 0.400 0.455 0.463
0.879 22.12 22.22 22.32 0.404 10.06 10.16 10.26 0.471 11.56 11.76 11.96 0.80BSC 0.40 0
o
0.031BSC 0.016 0.020 o
0.024 0.004 8
o
0.50 0.80 0.71 -
0.60 0.10 8
o
0.031 0.028 -
Y
0
o
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AMC DOC. #: AMC5902_B March 2004
6CH Motor Driver for CD-ROM, DVD-ROM
IMPORTANT NOTICE
AMC5902
ADD Microtech (ADDM) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. ADDM integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of ADDM products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. ADDM assumes to no liability to customer product design or application support. ADDM warrants the performance of its products to the specifications applicable at the time of sale.
U.S.
ADD Microtech Inc. 492 Altamont Drive Milpitas, CA 95035 T E L : (408) 9410420 FA X : (408) 9410864
Asia Pacific region
ADD Microtech Corp 13F, 287, Sec 3, Nan Jin E. Road Taipei, Taiwan T E L : 2-27132800 FA X : 2-27132805
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