System Motor Driver ICs for CD/DVD Players 1ch Spindle Motor Driver ICs BA6859AFP-Y,BA6664FM,BD6671FM No.10011EAT03 Description ROHM's spindle motor drivers incorporate the 3-phase full-wave pseudo-linear drive system(BA6859AFP-Y, BA6664FM) and 180 electrifying direct PWM drive system(BD6671FM).Smooth rotation characteristic performance is ensured. Besides, high torque is provided in a wide output range because the output stage incorporates low-saturation voltage NPN transistors (BA6859AFP-Y, BA6664FM) and low-power consumption MOSFET (BA6671FM). Features 1) 3-phase full-wave pseudo-linear system (BA6859AFP-Y, BA6664FM) 2) 180 electrifying direct drive PWM system (BD6671FM) 3) Power saving, TSD (thermal shutdown) functions built in 4) Current limiting, Hall bias circuit built in 5) FG output built in 6) 3-phase component FG output built in (BA6664FM, BD6671FM) 7) Circuit direction detection function built in (BA6859AFP-Y, BA6664FM) 8) Reverse rotation prevention circuit built in 9) Short brake pin built in (BA6859AFP-Y, BA6664FM) 10) Brake mode selection pin built in (BA6859AFP-Y, BD6671FM) 11) Supports DSP 3.3 V Applications Used for car, CD and DVD players incorporating changer function Absolute maximum ratings (Ta=25) Parameter Symbol Ratings BA6859AFP-Y BA6664FM BD6671FM Unit Applied voltage VCC 7 7 7 V Applied voltage VM 15 15 15 V Applied voltage VG - Power dissipation 1 20 2 V 2 Pd 1450* 2200* 2200* mW Operating temperature Topr -40+85 -40+85 -40+85 Storage temperature Tstg -55+150 -55+150 -55+150 Output current Iout 1300 1300 2500 mA Tjmax 150 150 150 Junction temperature *1 Reduced by 11.6 mW/ over 25, when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm). *2 Reduced by 17.6 mW/ over 25, when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm). Line up matrix Parameter Symbol Power supply voltage VG pin voltage www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. Ratings Unit BA6859AFP-Y BA6664FM BD6671FM VCC 4.55.5 4.55.5 4.55.5 V VM 3.014 3.014 4.013.2 V VG - - 8.519 V 1/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM Electrical characteristics 1) BA6859AFP-Y (Unless otherwise specified, Ta=25, VCC=5.0V, VM=12V) Limits Parameter Symbol Min. Typ. Max. <Total device> Circuit current 1 ICC1 0 0.2 Circuit current 2 ICC2 5.0 7.5 <Power-saving > ON voltage range VPSON 1.0 OFF voltage range VPSOFF 2.5 <Hall bias> Hall bias voltage VHB 0.5 0.9 1.5 <Hall amp> Input bias current IHA 0.7 3.0 Same phase input voltage range VHAR 1.0 4.0 Mini. input level VINH 50 H3 hysteresis level VHYS 5 20 40 <Torque Command > Input voltage range EC, ECR 0 5 Offset voltage ECOFF-80 -50 -20 Offset voltage + ECOFF+ 20 50 80 Input bias current ECIN -3 3 I/O gain GEC 0.56 0.70 0.84 <FG> FG output high-level voltage VFGH 4.5 4.8 FG output low-level voltage VFGL 0.25 0.4 Duty (reference values) DU 50 <Rotation Detection> FR output high-level voltage VFRH 4.1 4.4 FR output low-level voltage VFRL 0.25 0.4 <Output> Output saturation high level voltage VOH 1.0 1.4 Output saturation low level voltage VOL 0.4 0.7 Pre-drive current IVML 35 70 Output limit current ITL 560 700 840 <Short brake > ON voltage range VSBON 2.5 OFF voltage range VSBOFF 1.0 <Brake mode > ON voltage range VBRON 2.5 OFF voltage range VBROFF 1.0 Unit mA mA Conditions PS=L PS=H V V Internal circuit OFF Internal circuit ON V IHB=10mA A V mVpp mV V mV mV A A/V One side input level Linear range:0.53.3V ECR=1.9V ECR=1.9V EC=ECR EC=1.2, 1.7V V V % IFG=-20A IFG=3.0mA V V IFR=-20A IFR=3.0mA V V mA mA IO=-600mA IO=600mA EC=0V output open V V BR=0V BR=0V V V EC>ECR, SB=Open EC>ECR, SB=Open Reference: Data 1.5 8 -40 6 4 25 85 2 0 1.5 85 1.0 Output L voltage :VOL [V] Output H voltage:V OH [V] Circuit current :Icc2 [mA] 10 25 -40 0.5 5 5.5 6 6.5 7 Supply voltage :Vcc[v] Fig.1 Circuit Current 2 www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 25 0.5 -40 0.0 0.0 4.5 85 1.0 0 0.3 0.6 0.9 1.2 1.5 Output Current :IOH[v] Fig.2 Output Saturation Voltage at High Level 2/17 0 0.3 0.6 0.9 1.2 1.5 Output Current :IOL [A] Fig.3 Output Saturation Voltage at Low Level 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM 2) BA6664FM(Unless otherwise specified, Ta=25, VCC=5.0V, VM=12V) Limits Parameter Symbol Min. Typ. Max. Unit Conditions <Total device> Circuit current 1 ICC1 0 0.2 mA PS=L, GSW=Open Circuit current 2 ICC2 6.2 9.1 mA PS=H, GSW=Open ON voltage range VPSON 1.0 V Internal current circuit OFF OFF voltage range VPSOFF 2.5 V Internal current circuit ON VHB 0.5 0.9 1.5 V IHB=10mA IHA 0.7 3.0 A VHAR 1.0 4.0 V Mini. input level VINH 50 mVpp H3 hysteresis level VHYS 5 20 40 mV EC, ECR 0 5 V Offset voltage - ECOFF- -75 -45 -15 mV ECR=1.65V, GSW=L Offset voltage + ECOFF+ 15 45 75 mV ECR=1.65V, GSW=L ECIN -3 3 A EC=ECR <Power-saving > <Hall bias> Hall bias voltage <Hall amp> Input bias current Same phase input voltage range One side input level <Torque Command > Input voltage range Input bias current Linear range:0.53.3V I/O gain low-level GECL 0.52 0.65 0.78 A/V GSW=L,RNF=0.5 I/O gain medium-level GECM 1.04 1.3 1.56 A/V GSW=OPEN,RNF=0.5 I/O gain high-level GECH 2.24 2.8 3.36 A/V GSW=H,RNF=0.5 FG output high-level voltage VFGH 4.5 4.8 V IFG=-20A FG output low-level voltage VFGL 0.2 0.4 V IFG=3.0mA FG output high-level voltage VFG2H 4.6 4.9 V IFG2=-20A FG output low-level voltage VFG2L 0.2 0.4 V IFG2=3mA FR output high-level voltage VFRH 4.1 4.4 V IFR=-20A FR output low-level voltage VFRL 0.2 0.4 V IFR=3.0mA Output saturation high-level voltage VOH 1.0 1.35 V IOUT=-600mA Output saturation low-level voltage VOL 0.4 0.65 V IOUT=600mA Pre-drive current IVML 35 70 mA ITL 560 700 840 mA ON voltage range VSBON 2.5 V BR=0V OFF voltage range VSBOFF 1.0 V BR=0V ON voltage range VBRON 2.5 V EC>ECR, SB=Open OFF voltage range VBROFF 1.0 V EC>ECR, SB=Open VGSWL 1.0 V High voltage range VGSWH 3.0 V OPEN voltage VGSWOP 2.0 V <FG> <FG2> <Rotation Detection> <Output> Output limit current EC=0V output open <Short brake > <Brake mode > <Gain switching > Low voltage range www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 3/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM 3) BD6671FM (Unless otherwise specified, Ta=25, VCC=5.0V, VM=12V) Limits Parameter Symbol Min. Typ. Max. Unit Conditions <Total device> Circuit current 1 ICC1 100 200 A PS=L, GSW=Open Circuit current 2 ICC2 8 14 20 mA PS=H, GSW=Open ON voltage range VPSON 1.0 V Internal current circuit OFF OFF voltage range VPSOFF 2.5 V Internal current circuit ON VHB 0.7 1.0 1.3 V IHB=10mA Same phase input voltage range VHAR 1.4 3.6 V Mini. input level VINH 100 mVpp <Power-saving > <Hall bias> Hall bias voltage <Hall amp> Both side input level Hall hysteresis level + VHYS+ 5 20 40 mV Hall hysteresis level - VHYS- -40 -20 -5 mV Low voltage range VGSWL 0.6 V High voltage range VGSWH 2.0 V OPEN voltage range VGSWOP 1.3 V Input voltage range EC, ECR 0 5 V Offset voltage + ECOFF+ 5 50 100 mV GSW=M Offset voltage - ECOFF- -100 -50 5 mV GSW=M <Gain switching > <Torque Command > Linear range: 0.53.0V Input current ECIN -11 -2.5 0 A EC=ECR=1.65V I/O gain low-level GECL 0.28 0.35 0.42 A/V GSW=L I/O gain medium-level GECM 0.56 0.70 0.84 A/V GSW=M I/O gain high-level GECH 1.12 1.40 1.68 A/V GSW=H Output ON resistance RON 1.0 1.35 IOUT=600mA (upper + lower side) Output limit current low-level ITLL 340 400 460 mA GSW=L Output limit current medium-level ITLM 680 800 920 mA GSW=M Output limit current high-level ITLH 1020 1200 1380 mA GSW=H High level voltage VFGH 4.6 V IFG=-100A Low level voltage VFGL 0.4 V IFG=+100A VPUMP 12.5 17 19 V VCC= 5V,VM=12V CP1=CP2=0.1F Upper side saturation voltage VCP1H 0.25 0.45 0.65 V ICP1=-4mA Lower side saturation voltage VCP1L 0.2 0.4 0.6 V ICP1=+4mA <Output> <FG/FG3 output > <Booster voltage > Charge pump output voltage <CP1 output > <CP2 output > Upper side saturation voltage VCP2H 0.4 0.6 0.8 V ICP2=-4mA Lower side saturation voltage VCP2L 0.15 0.35 0.55 V ICP2=+4mA www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 4/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM Block Diagram, application Circuit Diagram and Pin Function 1) BA6859AFP-Y Fig.4 BA6859AFP-Y Block Diagram Pd (W) 2.0 1.45 1.0 0 25 50 75 85 100 125 150 Ta() Fig.5 Power Dissipation Reduction (BA6859AFP-Y) * Reduced by 11.6 mW/ over 25, when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm). www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 5/17 BA6859AFP-Y Pin Function Table Pin No. Pin name Function 1 N.C. N.C. 2 N.C. N.C. 3 N.C. N.C. 4 A3 Output pin 5 A2 Output pin 6 A1 Output pin 7 GND GND pin 8 H1+ Hall signal input pin 9 H1Hall signal input pin 10 H2+ Hall signal input pin 11 H2Hall signal input pin 12 H3+ Hall signal input pin 13 H3Hall signal input pin 14 VH Hall bias input pin 15 BR Brake mode selection pin Capacitor connection pin for phase 16 CNF compensation 17 SB Short brake pin 18 FR Rotation detection pin 19 ECR Output voltage control reference pin 20 EC Output voltage control pin 21 PS Power-saving pin 22 FG FG signal output pin 23 VCC Power supply pin 24 VM Motor power supply pin Resistance connection pin for output 25 RNF current detection FIN FIN GND 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM 2) BA6664FM Torque limit current and I/O gain settings are made by the RNF resistance value. Resistance of 0.4 to 1.0 is recommended. Output to the motor will be opened at a chip tempe 175C (Typ.). Do not use the IC in excess of a chip rature of temperature of 150C. RNF 0.5 Capacitor for noise level mitigation. The recommended value is 0.47 F to 10 F. 28 DRIVER A3 27 TSD GAIN SWITCH 2 A2 4 CURRENT SENSE AMP TL 7 8 H1+ 9 Hall1 H1 + - SERVO SIGNAL 22 The motor torque current is controllable. ECR If the ECR voltage is set between 1.6 and 2.2V, the maximum torque limit current will be obtained. FR 20 VCC The detection of motor rotation direction is possible. FG2 R D Q CK Q 19 SB SHORT BRAKE The short brake is operated regardless of brake mode settings. 18 CNF - 17 + - H3- The power saving mode is turned ON by low-level voltage, and the circuit current and motor output will stop. - 12 13 PS 21 + + H3+ Speed detection is attained by FG signal output. EC + 11 H2- 1F 23 VCC H2+ Hall1 TORQUE SENSE AMP - I/O gain + - FG - - 10 Hall1 + + 1F - VM VCC VCC PS + GSW 26 24 HALL AMP GND RNF 25 GAIN CONTROL A1 VM 14 BRAKE MODE 16 Hall Bias 15 FIN Connect a capacitor for phase compensation. The recommended value is 0.1F. 0.1F BR VH Short brake and reversed brake settings are possible. 500 500 Resistor for setting Hall input level . The recommended value is 200 to 1k . Output will be open when the reverse rotation of the motor is detected. Fig.6 BA6664FM Block Diagram BA6664FM Pin Function Table Pin No. Pin name Function 1 N.C. N.C. 2 A3 Output pin 3 N.C. N.C. 4 A2 Output pin 5 N.C N.C. 6 N.C. N.C. 7 A1 Output pin Pd[W] 8 GND GND pin 9 H1+ Hall signal input pin 10 H1Hall signal input pin 11 H2+ Hall signal input pin 2.2 12 H2Hall signal input pin 2.0 13 H3+ Hall signal input pin 14 H3Hall bias input pin 15 VH Hall bias input pin 16 BR Brake mode pin Capacitor connection pin for phase 17 CNF compensation 18 SB Short brake pin 1.0 19 FG2 FG 3-phase component output pin 20 FR Rotation detection pin 21 ECR Output voltage control reference pin 0 25 50 75 85 100 125 150 22 EC Output voltage control pin Ta() 23 PS Power-saving pin Fig.7 Power Dissipation Reduction (BA6664FMBD6671FM) 24 FG FG signal output pin 25 VCC Power supply pin * Reduced by 11.6 mW/ over 25, when mounted on a glass epoxy board 26 GSW Gain switching pin (70 mm x 70 mm x 1.6 mm). 27 VM Motor power supply pin Resistance connection pin for output 28 RNF current detection FIN FIN GND www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 6/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM 3)BD6671FM 200 EXOR H1+ Hall comp H1 H1- 1000pF FG3 + - H2+ Hall Amp H2 H2- 1000pF 200 Vcc H3GSW FIN A1 RNF U-Pre Driver FIN Driver OSC L -Pre Driver GND RNF1 A3 CP1 0.1 F CP2 Charge Pump RNF2 UVLO VG CNF Curre nt Limit Comp MODE Vcc Torque AMP Matrix Vcc EC servo ECR signal VM Current Sense AMP 10F CL D CK 1.65V 100 F Q QB 0.01F PS 0.047F 10k PS 0.1 F Vcc 0.5 A2 Matrix Gain control 2 TSD + - VH VM + - H3+ H3 FG Hall bias 1000pF PWM Comp 1 REVERSE DETECT 1 Set capacitor between VM and GND, close as possible to the IC. 2 To prevent from concentration of current routes, make the wiring impedance values from the power supply equal as possible. Fig.8 BD6671FM Block Diagram BD6671FM Pin Function Pin No Pin name Function Pin No Pin name Function 1 H1+ Hall signal input pin 15 VM 2 H1- Hall signal input pin 16 ECR 3 H2+ Hall signal input pin 17 EC Output voltage control pin 4 H2- Hall signal input pin 18 PS 5 H3+ Hall signal input pin 19 RNF2 6 H3- Hall signal input pin 20 A3 7 GSW Gain switching pin 21 RNF1 8 GND 22 A2 9 CP1 23 RNF1 10 CP2 24 A1 Output pin 11 VG 25 VM Motor power supply pin 12 CNF 26 VH Hall bias pin 13 MODE GND Charge pump capacity connection pin 1 Charge pump capacity connection pin 2 Charge pump output pin Capacitor connection pin for phase compensation Brake mode switching pin Power-saving pin Resistance connection pin for output current detection Output pin Resistance connection pin for output current detection Output pin Resistance connection for output current 27 FG FG Output pin 14 VCC 28 FG3 FG3 Output pin FIN FIN GND Power supply pin Motor power supply pin Output voltage control reference pin *Heat radiation FIN: GND www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 7/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM I/O logic 1) BA6859AFP-Y Output conditions Input conditions Pin. No Forward rotation Reverse rotation 8 9 10 11 12 13 6 5 4 6 5 4 H1 + H1 - H2 + H2 - H3 + H3 - A1 A2 A3 A1 A2 A3 1 L M H M M M H L L L H H 2 H M L M M M L H H H L L 3 M M L M H M L H L H L H 4 M M H M L M H L H L H L 5 H M M M L M L L H H H L 6 L M M M H M H H L L L H Input voltage Hi=2.6V Mid=2.5V Low=2.4V Note: Forward rotation EC<ECR Reverse rotation EC>ECR 2) BA6664FM Output conditions Input conditions Pin. No Forward rotation Reverse rotation 7 4 2 7 4 2 A1 A2 A3 A1 A2 A3 9 H1 + 10 H1 - 11 H2 + 12 H2 - 13 H3 + 14 H3 - 1 L M H M M M H L L L H H 2 H M L M M M L H H H L L 3 M M L M H M L H L H L H 4 M M H M L M H L H L H L 5 H M M M L M L L H H H L 6 L M M M H M H H L L L H Input voltage Hi=2.6V Mid=2.5V Low=2.4V Note: Forward rotation EC<ECR Reverse rotation EC>ECR 3)BD6671FM Output conditions Input conditions Pin. No Forward rotation 1 H1 + 2 H1 - 3 H2 + 4 H2 - 5 H3 + 6 H3 - 1 L M H M M 2 H M L M 3 M M L 4 M M 5 H 6 L Reverse rotation Reverse rotation (MODE=L) (MODE=H) 24 22 20 24 22 20 24 22 20 A1 A2 A3 A1 A2 A3 A1 A2 A3 M H L L L H H L L L M M L H H H L L L L L M H M L H L H L H L L L H M L M H L H L H L L L L M M M L M L L H H H L L L L M M M H M H H L L L H L L L Input voltage Hi=2.6V Mid=2.5V Low=2.4V Note: Forward rotation EC<ECR Reverse rotation EC>ECR www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 8/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM I/O Timing Chart 1) BA6859AFP-Y, BA6664FM H1+ H 2+ H 3+ A1 30 Output current H1 - + H2+ A1 Output current A2 Output current H2 - + H3+ A2 Output current A3 Output current H3 - + H1+ A3 Output current Fig. 9 2) BD6671FM H1+ H2+ H3+ A1 Output current 30 A1 Output voltage A2 Output voltage A2 Output current Fig. 10 www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 9/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM I/O Circuit 1) BA6859AFP-Y (1) Power saving (pin 21) (6) FG output (pin 22) VCC 15K 21 10K 10k 22 (2) Torque command input (pin 19, pin 20) (7) FR output (pin 18) 20 1k 1k 19 30k 18 (3) Coil output (A1: pin 6, A2: pin 5, A3: pin 4) VM External RNF Register RNF 6 (8) Short brake (17 pin) 10k 5 500 500 13k 4 1k GND 5k 17 12k (4) Hall input (H1+ : 8 pin, H1- : 9 pin, H2+ : 10 pin, H2- : 11 pin, H3+ : 12 pin, H3- : 13 pin) 1K 1K (9) Brake mode (15 pin) 15k 15 (5) Hall bias(14 pin) 14 10k 100K www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 10/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM 2) BA6664FM (1) Power saving (23 pin) (7) FG output (19 pin) VCC 15K 23 5k 10K 19 (2) Torque command input (21 pin, 22 pin) (8) FR output (20 pin) 22 1k VCC 1k 21 30k 20 (3) Coil output (A1 : 7 pin, A2 : 4 pin, A3 : 2 pin) VM External RNFRegister RNF 7 4 (9) Short Brake mode (18 pin) 2 10k 500 500 1k 5k (4) Hall input (H1+ : 9 pin, H1- : 10 pin, H2+ : 11 pin, H2- : 12 pin, H3+ : 13 pin, H3- : 14 pin) 1K 13k 18 12k 1K (10)Brake mode (16 pin) (5) Hall bias (15 pin) 15 16 15k 10k (11) Gain switch (26 pin) 100K 100K (6) FG output (24 pin) 26 VCC 5K 1K 30K 5K 10k 56K 24 www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 11/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM 3) BD6671FM (1) Hall input (H1 : 1 pin, H1-: 2 pin, H2+ : 3 pin, H2- : 4 pin, H3+ : 5 pin, H3- : 6 pin) VCC (6) Brake mode selection pin (13 pin) VCC VCC 30K 13 + - Hn Hn 1K 20K 1K 1K 1K 25K (2) Gain switch (7pin) VCC (7) Torque amp (ECR : 16 pin, EC : 17 pin) VCC VCC 100K 1K 75K 10K 7 16,17 10K 1K 25K (3)CP1 output (9pin) VCC (8) Power saving (18 pin) (9)RNF2(19 pin) VCC VCC VCC 50 30K 18 9 710 1K 19 20K (4) CP2 / VG output (CP2 : 10 pin, VG : 11 pin) 50 11 50 10 (10) Output pin (A1 : 24 pin, A2 : 22 pin, A3 : 20 pin) VM VM 24 22 20 RNF1 (5) CNF pin (12 pin) (11) Hall bias (26 pin) VCC 12 (12) FG / FG3 output (FG : 27 pin, FG3 : 28 pin) VCC VCC VCC 50 26 2K www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 50 27,28 100K 12/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM Operation Explanation Torque Command Rotation direction EC<ECR Forward EC>ECR Reverse* *Stops after detecting reverse rotation RNF [V] Forward The I/O gain GEC from the EC pin to the RNF pin (output current) is determined by the RNF detection resistor. (BA6859AFP-Y) GEC=0.35/RNF [A/V] (1) (BA6664FM) GECL=0.325/RNF [A/V] (GSW=L) GECM=0.60/RNF [A/V] (GSW=OPEN) GECH=1.4/RNF [A/V] (GSW=H) (BD6671FM) GECL=0.175/RNF [A/V] (GSW=L) GECM=0.35/RNF [A/V] (GSW=M) GECH=0.70/RNF [A/V] (GSW=H) The following torque limit current ITL is obtained (BA6859AFP-Y, BA6664FM) ITL=0.35/RNF [A](2) (BD6671FM) ITLL=0.2/RNF [A] (GSW=L) ITLM=0.4/RNF [A] (GSW=M) ITLH=0.6/RNF [A] (GSW=H) The value will become smaller than the computed value due to the wiring capacity and other factors, if the RNF resistance is 0.5 or below. Offset voltage Offset voltage + 3mV 1.65(ECR) EC[V] Fig.11 Set-up of Motor Rotation Direction and Voltage Range of Torque Control Reference Terminal. The motor rotation direction determined by the torque control terminal voltage EC and the torque control reference terminal voltage ECR Torque control input voltage Rotation direction EC<ECR Forward torque EC>ECR Reverse torque Io Forward torque Reverse torque ITL 0.5 2.5 3.3 Fig.12 5.0 EC[V] The relation between the input gain and torque limit current expressed as (1) and (2) discussed previously is only valid when EC and ECR are within a range from 0.5V to 3.3V. Depending on how the torque control reference terminal voltage, ECR is specified, there may be a case when the output current for the motor does not go up to the torque limit value. Please be aware of this voltage range when specifying the ECR voltage. For BA6859AFP-Y, BA6664FM and BD6671FM, 1.6V2.2V is recommended. If above conditions are understood, the voltage input range to the EC and ECR terminals can be from 0V to VCC. Power Saving The input circuit specified in I/O circuit 1) BA6859AFP-Y (1) is used for power saving input. The power saving pin has a temperature characteristic of approximately -5 mV/ and also the built-in resistors has a dispersion of 30%. Keep the input voltage range in mind. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 13/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM Reverse Rotation Detection Function Actual motor rotation at reverse detection D-FF H2+ H2- + - D H3+ H3- + - CK EC < ECR: Forward torque (forward rotation) Q EC > ECR: Deceleration (forward rotation) H:OUTPUT.OPEN (HIGH-IMPEDANCE) + - EC ECR When the motor rotates in the reverse direction, the reverse rotation detection function will operate and the output will be in an open state. Fig.13 The motor rotates in a reverse direction with inertial force. Fig. 13 shows the construction of the reverse rotation detection circuit. Stop Forward rotation (EC<ECR) Fig. 9 shows the phase relation of the H2+ and H3+ Hall input signals, in which case the reverse rotation detection circuit will not work. Reverse rotation (EC>ECR) The phase relation of the H2+ and H3+ signals are opposite to that when the motor is rotating in the forward direction. Therefore, the reverse rotation detection circuit operates, and the output is turned off and open. FR Signal Output (BA6859AFP-Y, BA6664FM) FR output signal pin outputs the FR signal of low(L) or high(H) after detecting the motor rotation direction. Motor rotation direction FR signal output Forward "H" Reverse "L" Brake Mode Change (BA6664FM, BD6671FM) By applying high-level voltage to the BR pin, the brake mode for the following condition can be changed: EC > ECR. EC<ECR EC>ECR L BR Forward rotation Reverse rotation brake H Forward rotation Short brake When the BR pin is set to high level and used in short-brake mode, open the SB pin. The BR pin has a temperature characteristics of approximately -5 mV/. Use the BR pin within the permissible input range. Short Brake (BA6859AFP-Y, BA6664FM) OFF OFF OFF ON A ON O A ON When the short-brake pin is set to high level, as shown in Fig.18, the output transistor (3-phase) on the high side will be turned off and the output transistor (3-phase) on the low side will be turned on. The short brake pin has a temperature characteristic of approximately -5 mV/. Keep the input voltage range (see Fig12) in mind. A MOTOR Fig.14 Hall Input The Hall element allows both serial and parallel connections. VCC VCC H1 H3 H2 Set the Hall input voltage between 1.0 and 4.0 V. Compute the resistance between the VH and VCC pins in consideration of the flowing current of the Hall device. H2 H1 H3 15-pin (Hall Bias) Parallel Connection 15-pin (Hall Bias) Serial Connection Fig.15 www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 14/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM FG Signal Output / FG2 Signal Output The FG signal output/FG2 signal output terminals are for detecting the motor rotation speed. The output frequency of FG2 signal is three times higher than the FG frequency signal output. So, it is suitable for the slow speed rotation detection. However, due to the Hall device variation and other reasons, the duty cycle may not reach 50% in some instances. H1+ H1- + - H2+ H2- + - H3+ H3- + - H1 H2 FG2 H3 FG Fig. 16 H1 waveform H2 waveform H3 waveform FG waveform FG2 waveform Fig. 17 Notes for use (1) Absolute maximum ratings This product is subject to a strict quality management regime during its manufacture. However, damage may result if absolute maximum ratings such as applied voltage and operating temperature range are exceeded. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the IC in a special mode where the absolute maximum ratings may be exceeded is anticipated. (2) Connecting the power supply connector backward Connecting the power supply connector backwards may result in damage to the IC. Insert external diodes between the power supply and the IC's power supply pins as well as the motor coil to protect against damage from backward connections. (3) Power supply lines As return of current regenerated by back electromotive force of motor happens, take steps such as putting capacitor between power source and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the connected power supply does not have sufficient current absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a voltage clamp diode between the power supply and GND pins. (4) GND potential Ensure a minimum GND pin potential in all operating conditions. (5) Setting of heat Take the power dissipation Pd) into account for practical application and make thermal design with sufficiently margined. (6) Pin short and mistake fitting Use caution when orienting and positioning the IC for mounting on printed circuit boards. Improper mounting may result in damage to the IC. Shorts between output pins or between output pins and the power supply and GND pins caused by the presence of a foreign object may result in damage to the IC. (7) Actions in strong magnetic field Use caution when using the IC in the presence of a strong magnetic field as doing so may cause the IC to malfunction. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 15/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM (8) ASO When using the IC, set the output transistor so that it does not exceed absolute maximum ratings or ASO. (9) Thermal shutdown circuit (TSD) This IC incorporates a TSD circuit. If the chip becomes the following temperature, coil output to the motor will be open. The TSD circuit is designed only to shut the IC off to prevent runaway thermal operation. It is not designed to protect the IC or guarantee its operation. Do not continue to use the IC after operating this circuit or use the IC in an environment where the operation of the TSD circuit is assumed. TSD ON temperature [] (typ.) Hysteresis temperature [] (typ.) BA6859AFP-Y 175 25 BA6664FM 175 15 BD6671FM 170 25 (10) Regarding input pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. P/N junctions are formed at the intersection of these P layers with the N layers of other elements to create a variety of parasitic elements. For example, when the resistors and transistors are connected to the pins as shown in Fig. 18, the P/N junction functions as a parasitic diode when GND > (Pin A) for the resistor or GND > (Pin B) for the transistor (NPN). Similarly, when GND > (Pin B) for the transistor (NPN), the parasitic diode described above combines with the N layer of other adjacent elements to operate as a parasitic NPN transistor. The formation of parasitic elements as a result of the relationships of the potentials of different pins is an inevitable result of the IC's architecture. The operation of parasitic elements can cause interference with circuit operation as well as IC malfunction and damage. For these reasons, it is necessary to use caution so that the IC is not used in a way that will trigger the operation of parasitic elements, such as by the application of voltages lower than the GND (P substrate) voltage to input pins. Resistor Transistor (NPN) Pin A Pin B C Pin B B Pin A N P+ N P+ P N P substrate Parasitic element GND E N P+ B N Parasitic element P+ P N C E P substrate Parasitic element GND GND GND Parasitic element Other adjacent elements Fig.18 Example of IC structure (11) Testing on application boards When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress. Always discharge capacitors after each process or step. Ground the IC during assembly steps as an antistatic measure, and use similar caution when transporting or storing the IC. Always turn the IC's power supply off before connecting it to or removing it from a jig or fixture during the inspection process. (12) Ground Wiring Pattern When using both small signal and large current GND patterns, it is recommended to isolate the two ground patterns, placing a single ground point at the application's reference point so that the pattern wiring resistance and voltage variations caused by large currents do not cause variations in the small signal ground voltage. Be careful not to change the GND wiring pattern of any external parts, either. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 16/17 2010.06 - Rev.A Technical Note BA6859AFP-Y,BA6664FM,BD6671FM Ordering part number B A 6 Part No. BA 6 6 4 F Part No. 6859A 6664 6671 BD M - Package FP-Y : HSOP25 FM : HSOP-M28 E 2 Packaging and forming specification E2: Embossed tape and reel HSOP25 <Tape and Reel information> 13.6 0.2 (MAX 13.95 include BURR) 2.75 0.1 2000pcs Direction of feed 0.3Min. 1 13 E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.25 0.1 1.95 0.1 1.9 0.1 Embossed carrier tape Quantity 14 5.4 0.2 7.8 0.3 25 Tape 0.11 S 0.1 S 0.8 0.36 0.1 12.0 0.2 1pin Reel (Unit : mm) Direction of feed Order quantity needs to be multiple of the minimum quantity. HSOP-M28 <Tape and Reel information> 18.5 0.2 (MAX 18.85 include BURR) +6 4-4 1.25 1500pcs 1.20.15 0.50.2 Direction of feed E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 14 1 5.15 0.1 +0.1 0.27 -0.05 S 0.11 2.20.1 Embossed carrier tape Quantity 15 7.50.2 9.90.3 28 Tape 0.8 0.37 0.1 0.1 S 1pin Reel (Unit : mm) www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 17/17 Direction of feed Order quantity needs to be multiple of the minimum quantity. 2010.06 - Rev.A Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) , transport intend to use our Products in devices requiring extremely high reliability (such as medical equipment equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property ("Specific Applications"), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM's Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASS CLASSb CLASS CLASS CLASS CLASS 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM's Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual ambient temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice - GE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label QR code printed on ROHM Products label is for ROHM's internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with ROHM representative in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable for infringement of any intellectual property rights or other damages arising from use of such information or data.: 2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the information contained in this document. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice - GE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM's Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM's Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an "as is" basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice - WE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.001