SA5664 3-PHASE SPINDLE MOTOR DRIVER FOR CD-ROM DESCRIPTION The SA5664 is a CD-ROM spindle motor driver supporting reverserotation preventing circuit. It incorporates power save circuit, thermal shut down circuit, FG output, hall bias, etc. The 3-phase full-wave pseudo linear driving system achieves high-performance and multi-function. FEATURES * 3 -phase, full-wave, pseudo linear driving system. * Built-in power save in stop mode. * Built-in current limiter. HSOP-28-375-0.8 * Built-in 3X and 1X hall FG output. * Built-in TSD (thermal shutdown) circuit. * Built-in gain switch pin. * Built-in hall bias circuit. ORDERING INFORMATION * Built-in rotational direction detector. Device Package * Built-in short-brake. SA5664 HSOP-28-375-0.8 * Built-in reverse rotation prevented circuit. * Built-in brake mode pin. * Corresponds to 3.3V DSP. BLOCK DIAGRAM HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 1 of 12 SA5664 ABSOLUTE MAXIMUM RATINGS (Tamb=25°C) Characteristics Symbol Rating Unit Maximum Supply Voltage VCC 7 V Maximum Supply Voltage VM 15 V Power Dissipation Pd 2200 mW Operate Temp. Range TOPR -20~+75 °C Storage Temp. Range TSTG -55~+150 °C Maximum Output Current IOUT 1300 mA ELECTRICAL CHARACTERISTICS (Unless otherwise noted, Tamb=25°C, VCC=5V,VM=12V , RL=8 , RNF=0.5 ) Characteristics Symbol Test condition Min. Typ. Max. Unit Total VCC -- 4.5 5.5 V VM -- 3.0 14 V Quiescent Current ICC1 PS=L, GSW=OPEN -- 0 0.2 mA Circuit Current 1 ICC2 PS=H, GSW=OPEN -- 15 20 mA -- 0.46 1.0 mA -- 1.0 V Operating Supply Voltage PS=H, GSW=OPEN Circuit Current 2 ICC3 H1,2,3 1/2VCC+0.1 H1,2,3 1/2VCC Power save ON Voltage Range VPSON Output driver off -- OFF Voltage Range VPSOFF Output driver on PS Input Current Ips 2.5 -- -- V PS=5V -- 230 -- µA VPS = 5 V, IHB=10mA - 0.5 1.5 V HALL BIAS Hall Bias Voltage VHB HALL AMP IHA -- -- 0.7 3.0 µA Common-mode Input Range VHAR -- 1.0 -- 4.0 V Minimum Input Level VINH -- 50 -- -- mVpp H1 Hysteresis Level VHYS -- 5 20 40 mV 0 -- 5.0 V Input Bias Current TORQUE CONTROL Input Voltage Range EC, ECR Linear range 0.5~3.3V Offset Voltage - ECOFF- ECR=1..65V, GSW=0 V -75 -45 -15 mV Offset Voltage + ECOFF+ ECR=1.65V, GSW=0 V 15 45 75 mV -3 -- 3 µA Input Current ECIN EC=ECR=1.9 V Input-output Gain L GECL GSW=0 V, RNF=0.5Ω 0.52 0.65 0.78 A/V Input-output Gain M GECM GSW=OPEN, RNF=0.5Ω 1.04 1.30 1.56 A/V Input-output Gain H GECH GSW=H, RNF=0.5Ω 2.24 2.80 3.36 A/V (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 2 of 12 SA5664 (Continued) Characteristics Symbol Test condition Min. Typ. Max. Unit GAIN SWITCH Low Voltage Range VGSWL GSW=OPEN, ECR=1.9 V Hi-voltage Range VGSWH EC=1.7 V Open Voltage VGSWOP -- -- -- 1.0 V 2.5 -- -- V -- 2.0 -- V FG Current of FG Output HI IFGH VOL=0.3V 0.2 0.4 1 mA Current of FG Output LOW IFGL VOL=5.0V 6 12 18 mA Current of FG2 Output HI IFG2H VOL=0.3V 0.55 0.75 0.95 mA Current of FG2 Output LOW IFG2L VOL=5.0V 6 12 18 mA Current of FR Output HI IFRH VOL=0.3V 0.1 0.13 0.23 mA Current of FR Output LOW IFRL VOL=5.0V 4.0 7.0 10.0 mA -- 1.0 1.35 V -- 0.4 0.65 V -- 35 70 mA 560 700 840 mA FG2 ROTATION DETECT OUTPUT Saturation Voltage H VOH Saturation Voltage L VOL Pre-drive Current IVML Torque Limit Current ITL IO=-600mA (VM-RNF short) IO=600mA EC=0 V or 5V, ECR=1.9 V PS= 5V output open RNF=0.5Ω SHORT BRAKE ON Voltage Range VSBON BR=0V 2.5 -- -- V OFF Voltage Range VSBOFF BR=0V -- -- 1.0 V -- 240 -- µA SB Input Current ISBin SB=5V BRAKE MODE ON Voltage Range VBRON EC>ECR, SB=open 2.5 -- -- V OFF Voltage Range VBROFF EC>ECR, SB=open -- -- 1.0 V -- 210 -- µA BR Input Current IBRin BR=5V HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 3 of 12 SA5664 PIN CONFIGURATION PIN DESCRIPTION Pin NO. Pin name Descriptions 1 NC No connection 2 A3 Output (A3) 3 NC No connection 4 A2 Output (A2) 5 NC No connection 6 NC No connection 7 A1 Output (A1) 8 GND Ground 9 H1+ Hall signal (H1+) 10 H1- Hall signal (H1-) 11 H2+ Hall signal (H2+) 12 H2- Hall signal (H2-) 13 H3+ Hall signal (H3+) 14 H3- Hall signal (H3-) 15 VH Hall bias 16 BR Brake mode 17 CNF Phase compensation capacitor 18 SB 19 FG2 Short brake 20 FR Rotation terminal direction output 21 ECR Output current control reference 22 EC Output current control voltage 23 PS Start/stop mode 24 FG FG signal (1X) 25 VCC Power supply for signal division 26 GSW Gain switch 27 VM 28 RNF FG signal (3X) Power supply for driver division Output current sense resistance HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 4 of 12 SA5664 FUNCTION DESCRIPTIONS (1) Input-output table Output Input condition Pin no. Regular Test point Reverse 9 10 11 12 13 14 7 4 2 7 4 2 H1+ H1- H2+ H2- H3+ H3- A1 A2 A3 A1 A2 A3 Condition1 L M H M M M H L L L H H 7 pin HI Condition2 H M L M M M L H H H L L 7pin low Condition3 M M L M H M L H L H L H 4 pin HI Condition4 M M H M L M H L H L H L 4pin low Condition5 H M M M L M L L H H H L 2pin HI Condition6 L M M M H M L H H L L H 2pin low Caution1: regular EC<ECR, reverse EC>ECR Input voltage: H=2.6 V, M=2.5 V , L=2.4 V (2) Torque voltage range, gain switch Fig.1 l By amplifying the voltage difference between Ec and ECR from servo IC, the torque sense amp produces l The output current (Io) is converted into the voltage (VNF) through the sense resistor (RNF) and compared the input (VAMP) for the current sense amp. with the VAMP. By the negative feedback loop the sensed output voltage, VNF is equal to the input VAMP. Therefore, the output current (Io) is linearly controlled by the input VAMP. l As a result, the signals Ec and ECR can control the velocity of Motor by controlling the output current (Io) of the driver. l The range of the torque voltage is shown Fig.2 Fig.2 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 5 of 12 SA5664 Rotation EC<ECR Regular EC>ECR Stop We can determine the value of input-output gain GEC by RNF resistance, and calculate it with the following formula. GEC=0.325/RNF [A/V] (GSW=L) GECM=0.65/RNF [A/V] (GSW=OPEN) GECH=1.40/RNF [A/V] (GSW=H) Torque limit current ITL can be calculated by ITL=0.35/RNF [A] The input range of ECR and Ec is 0.5 V ~ 3.3 V (RNF = 0.5 ). (3) Power save When power save function is active all power TRs turn off. (4) Reverse detection Fig.3 + - EC ECR A H1+ H1- + - D H2+ H2- + - CK High Active Q D-F/ F l When the output of the AND Gate, A is High, the output of the Driver becomes open and the motor stops. l When in the state of the forward rotation, the D-F/F output Q is LOW and the control input is EC < ECR, so the motor rotates normally. l At Forward rotation, if the control input is changed such that EC > ECR, then the motor rotates slowly by the reverse commutation in the Driver. When the motor rotates in reverse direction, the D-F/F output becomes High and the AND Gate output, becomes High. Thus detective circuit operates, make the output of the Driver becomes open and the motor stops. Forward rotation at EC<ECR. Rotating speed is decreased due to reverse torque at EC>ECR.(forward) When motor rotates in reverse, reverse detection operates and output become open. Rotating reverse at short time due to motor inertia. Stop HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 6 of 12 SA5664 (5) Input-output timing chart Fig.4 (6) Brake mode terminal Input ‘ H’voltage to BR pin. Change brake type at EC>ECR Fig. 5 VCC 16 15 10 EC<ECR Pin 16 BR EC>ECR L Regular rotation Stop by reverse detection H Regular rotation Stop by short brake (7) Short brake Fig. 6 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 7 of 12 SA5664 Pin 18 Short brake High ON Low OFF When the short brake function is active, all upper power TRs turn off and all lower power TRs turn on, and the motor slows down. (8) Hall Sensor Connection Hall element can be used with both series connection and parallel connection. Please set hall input voltage at 1.0~4.0V and Hall minimum input level over 50mVpp. And estimate the value of resistance to VH pin and VCC pin. There considering the current into the hall element. When use without the resistance to VH pin. IVH≥5mA is recommended. Fig.7 VCC VCC Hall 1 Hall 1 Hall 2 Hall 3 Hall 2 Hall 3 PIN15 VH /Parallel connection PIN15 VH /Serial connection (9) FG (1X) output, FG2 (2X) output Fig.8 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 8 of 12 SA5664 (10) Thermal shut down (TSD) If the temperature of chip rises above 175°C (TYP), it makes and the output driver shuts down. TSD has temperature hysteresis of about 15°C (TYP). TEST CIRCUIT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.1 2005.08.09 Page 9 of 12 SA5664 TYPICAL APPLICATION CIRCUIT 28 A3 A2 A1 2 27 26 4 25 RNF VM 0.5 RNF GSW VM 12 V VCC 7 24 FG GND H1+ 8 9 Hall 1 H1- 23 22 21 PS EC Servo Signal ECR 10 20 FR H2+ 11 Hall 2 H2- 19 FG2 12 18 SB H3+ 13 17 Hall 3 H3- 14 16 15 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn CNF 0.1 uF BR VH REV:1.1 2005.08.09 Page 10 of 12 SA5664 PACKAGE OUTLINE Http: www.silan.com.cn 9.525±0.2 2.30±0.20 +0.10 -0.05 0.15 HANGZHOU SILAN MICROELECTRONICS CO.,LTD 7.5±0.2 UNIT: mm 10.2±0.3 HSOP-28-375-0.8 REV:1.1 2005.08.09 Page 11 of 12 SA5664 ATTACHMENT Revision History Data REV Description 2003.04.08 1.0 Original 2005.08.09 1.1 Change the electronic characteristics. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Page 5 REV:1.1 2005.08.09 Page 12 of 12