FAN8729 Fairchild Semiconductor, FAN8729 Datasheet
FAN8729
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... Car navigation System ©2003Fairchild Semiconductor Corporation www.fairchildsemi.com Description The FAN8729 is a monolithic integrated circuit built-in 4Channel BTL motor and spindle motor drivers, which can drive tracking actuator, focus actuator, sled motor, loading motor, 3-phase BLDC motor, and it is applicable to DVD-P/ MDP/CAR-MD/CAR-NAVIGATION systems ...
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... Pin Assignments H1 H2+ H2 H3 DIR 8 9 SVCC1 10 VM1 11 CS1 12 PGND1 FAN8729 FAN8729 NC DO4- DO4+ DO3- DO3+ PGND2 DO2- DO2+ DO1- DO1+ OPOUT OPIN- 2 ...
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... FAN8729 Pin Definitions Pin Number Pin Name 1 H1+ 2 H1- 3 H2+ 4 H2- 5 H3 DIR 9 SVCC1 10 VM1 11 CS1 12 PGND1 SGND TSD_M 19 IN4 20 IN3 21 IN2 22 IN1 23 VM2 24 OPIN+ 25 OPIN- 26 OPOUT 27 DO1+ 28 DO1- 29 DO2+ 30 DO2- 31 PGND2 32 DO3+ 33 DO3- 3 I/O Pin Function Description I Hall1(+) Input ...
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... BTL Drive 4 Output(-) - NC I BTL CH4 Reference - BTL CH4 Motor Supply - BTL CH3 Motor Supply - BTL Signal VCC I BTL CH1,2,3 Reference I BTL CH1,2,3 Mute I BTL CH4 Mute I Spindle Start/Stop O OP-AMP Spindle Output I OP-AMP Spindle Input(-) I OP-AMP Spindle Input(+) I Phase Compesation Cap. FAN8729 4 ...
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... FAN8729 Internal Block Diagram H1+ 1 H1- 2 H2+ 3 H2- 4 H3+ 5 H3- 6 FIN(GND DIR 8 SVCC1 9 Distributor VM1 10 CS1 11 PGND1 12 Driver ECR 5K Absolute Values Current Sense Amp 5K Output Current Limit Detection Logic Reverse Rotation 10K 10K TSD_M VM4 23.5dB 34 33 20K VM3 23.5dB 32 20K ...
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... Equivalent Circuits FG Signal Output 25 Current Detector 11 5K BTL Drive Mute 50K 30K Phase Compensation Capacitor FAN8729 0. Start/Stop 100K 44 25 50K 30K BTL Bias Voltage ...
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... FAN8729 Equivalent Circuits (Continued) 3-Phase Rotational Direction Output 25 3-Phase Output 15K BTL Input(CH1, OP-AMP Input SVCC BTL Drive Output 27 28 20K 30K TSD_M 18 BTL Input(CH3,4) 10K 25 OP-AMP Output SVCC 26 ...
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... Operating Supply Voltage (BTL Motor) Symbol SV CC1max SV CC2max V M1max V M2,3,4max Pd Topr Tstg I OMAXS I OMAXB ≥ 25°C. A 100 150 75 125 175 Symbol SV CC1 SV CC2 M2,3,4 FAN8729 Value Unit note 2.7 W -35 ~ +85 °C -55 ~ +150 °C 1 Ambient Temperature, Ta[ C] Min. Type. Max. Unit 4.5 - 5.5 4.5 - 13.2 4 ...
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... FAN8729 Electrical Characteristics (Unless otherwise specified, Ta=25 V =8V, V =9V, R =15Ω Parameter Circuit Current 2 START/STOP SS On Voltage Range SS Off Voltage Range HALL AMP Hall Bias Current Common Mode Voltage Range Minimum In Level TORQUE CONTROL EC Input Voltage Range Offset Voltage (-) Offset Voltage (+) ...
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... V = -0.1Vrms VC4 120Hz -20dB 120Hz, 2Vp OHOP V - OLOP I - SINK I - SOURCE G f= 1kHz -75dB VOOP 120Hz -20dB 120Hz, 2Vp-p OP CMRR f= 1kHz -20dB OP IN FAN8729 =9V, V =5V, R =8Ω Min. Typ. Max. Unit - 16 2 1 1.0 V -50 - +50 mV 3.6 4 15.5 17.5 19 1.0 ...
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... FAN8729 Application Information 1. MUTE Function • MUTE circuit turns BTL output ON/OFF. • When MUTE terminal (pin42, pin43) is OPEN, or terminal voltage is lower than 1V, BTL is disable. • When MUTE terminal (pin42, pin43) is voltage is higher than 1.5V, BTL output operates normally. • Feature Table. ...
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... BTL Channel’s output voltage is found as follows − Do • BTL gain value is found as follows ref R2 LEVEL SHIFT P ref has the value of VM/2. ref ref × + × − Vin Vref − × + × − Vin Vref × Gain FAN8729 DO DO ...
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... FAN8729 5. Spindle Torque sense amp E C • The spindle driver circuit consists of 3 section: Torque sense amp, Current sense amp, and Power driver. • Torque sense amp compares and amplifies E voltage comparison, it determines the signal as forward or reverse. • Current sense amp limits the current in Motor(Io) by comparing output current signal from torque sense amp with the current of R ...
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... VMAX within IC is fixed at 350mV. • torque sense amp is set to 0.71. VM1 Current / Voltage Convertor Negative - Feedback loop Vin Driver + Absolute Values + Vmax - VM1 Max. output current limiting value. CS VM1 - Output Io Rcs Vs Current sense + CS1(Pin11 Power V Transistors W Commutation Distributor and the voltage output CS FAN8729 14 ...
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... FAN8729 7. Rotational Direction Detecting Function • Rotation detection circuit gives the result to DIR pin by detecting the MD’s rotational direction. • Detects the MD’s rotational direction using hall signals H2 and H3. • Feature Table. Rotation EC < ECR Forward EC > ECR Reverse • In case of forward rotational detection, the phase of hall signal shows as H3→ H2→ follows; ...
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... Accordingly gain controller goes OFF and motor is stopped. • Feature Table. Rotation H2 Forward H Reverse L Current S ens e Amp Gain controller D-F/F H3 D-F/F DIR H → → FAN8729 M Driver Reverse Rotation Preventer E <E E > Forward Brake and Stop – Stop 16 ...
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... FAN8729 8. FG Output Function • FG circuit outputs the number of motor rotation. • One pulse per rotation is output of FG. • FG uses hall signal H1 as its input, and creates output using hysteresis comparator. • Input/Output wavelength is shown below Output H1+ + H1- - ...
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... Output voltage and current wavelength of each of the 3-phase hall input is shown below. • The following diagram is the motor’s output wavelength in the forward rotation direction. H1+ H2+ H3+ A1 output current A1 output voltage A2 output current A2 output voltage A3 output current A3 output voltage FAN8729 18 ...
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... FAN8729 Typical Performance Characteristics SVCC1 vs ICC2 6.00 5.50 5.00 4.50 4.00 3.50 3.00 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 SVCC1(V) V IN1 vs V OUT1 (V REF=1.65V , V M2=5V ) 6.0 4.0 2.0 0.0 -2.0 -4.0 -6.0 0.0 1.0 V IN1 IN3 vs V OUT3 (V REF=1.65V , V M3=12V ) 12 ...
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... SVCC2 vs GVC2 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 SVCC2(V) SVCC2 vs GVC4 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 SVCC2(V) FAN8729 20 ...
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... FAN8729 Test Circuits Hall Signal V Generation H1 H1 10uA 8 DIR SVCC1 SVCC1 10 VM1 11 CS1 VM1 V PGND1 FAN8729 OPIN DO4- V RL1 1 DO4 DO3 RL1 32 DO3+ PGND2 31 2 DO2 RL1 DO2 DO1 RL1 DO1+ 27 OPOUT 26 OPIN OPIN- OPOUT VCC RL2 RL2 RL2 ...
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... HALL3 6 H3- FG Signal FG 7 Rotate Direction 8 DIR 9 SVCC1 10 VM1 VM1 CS1 11 PGND1 Notes: Radiation pin is connected to the internal GND of the package FAN8729 DO4 Loadng D04 DO3- Sled M Motor DO3+ 32 PGND2 31 DO2- 30 Focus DO2+ 29 DO1- 28 Tracking DO1+ 27 OPOUT 26 OPIN Servo Amp FAN8729 22 ...
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... FAN8729 Package Dimensions 0.10MAX 23 48-QFPH-1414 17.20 ±0.30 14.00 ±0.20 # 0.10 0.30 -0.05 0.10MAX 0.65 (0.825) ±0.20 0.80 ...
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... FAN8729 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...