BD6671FM

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 Applied voltage Applied voltage Applied voltage Power dissipation Operating temperature Storage temperature Output current Junction temperature Symbol VCC VM VG Pd Topr Tstg Iout Tjmax Ratings BA6859AFP-Y 7 15 1450* 1 BA6664FM 7 15 2200* 2 BD6671FM 7 15 20 2200* 2 Unit V V V mW ℃ ℃ mA ℃ -40～+85 -55～+150 1300 150 -40～+85 -55～+150 1300 150 -40～+85 -55～+150 2500 150 *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 Power supply voltage VG pin voltage Symbol VCC VM VG Ratings BA6859AFP-Y 4.5～5.5 3.0～14 BA6664FM 4.5～5.5 3.0～14 BD6671FM 4.5～5.5 4.0～13.2 8.5～19 Unit V V V www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/17 2010.06 - Rev.A 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. Circuit current 1 ICC1 － 0 0.2 Circuit current 2 ICC2 － 5.0 7.5 ON voltage range VPSON － － 1.0 OFF voltage range VPSOFF 2.5 － － Hall bias voltage VHB 0.5 0.9 1.5 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 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 output high-level voltage VFGH 4.5 4.8 － FG output low-level voltage VFGL － 0.25 0.4 Duty (reference values) DU － 50 － FR output high-level voltage VFRH 4.1 4.4 － FR output low-level voltage VFRL － 0.25 0.4 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 ON voltage range VSBON 2.5 － － OFF voltage range VSBOFF － － 1.0 ON voltage range VBRON 2.5 － － OFF voltage range VBROFF － － 1.0 ●Reference: Data 10 Circuit current :Icc2 [mA] 1.5 Technical Note Unit mA mA V V V µA V mVpp mV V mV mV µA A/V V V % V V V V mA mA V V V V PS=L PS=H Conditions Internal circuit OFF Internal circuit ON IHB=10mA One side input level Linear range:0.5～3.3V ECR=1.9V ECR=1.9V EC=ECR EC=1.2, 1.7V IFG=-20µA IFG=3.0mA IFR=-20µA IFR=3.0mA IO=-600mA IO=600mA EC=0V output open BR=0V BR=0V EC>ECR, SB=Open EC>ECR, SB=Open 85℃ Output L voltage :VOL [V] 1.5 8 6 4 2 0 4.5 5 5.5 6 6.5 7 Supply voltage :Vcc[v] Output H voltage:V OH [V] 85℃ 1.0 -40℃ 1.0 25℃ -40℃ 25℃ 85℃ 0.5 0.5 25℃ -40℃ 0.0 0 0.3 0.6 0.9 1.2 1.5 0.0 0 0.3 0.6 0.9 1.2 1.5 Output Current :IOH[v] Output Current :IOL [A] Fig.1 Circuit Current 2 Fig.2 Output Saturation Voltage at High Level Fig.3 Output Saturation Voltage at Low Level www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM Technical Note 2) BA6664FM(Unless otherwise specified, Ta=25℃, VCC=5.0V, VM=12V) Limits Parameter Symbol Min. Typ. Max. Circuit current 1 Circuit current 2 ON voltage range OFF voltage range Hall bias voltage Input bias current Same phase input voltage range Mini. input level H3 hysteresis level Input voltage range Offset voltage Offset voltage + Input bias current I/O gain low-level I/O gain medium-level I/O gain high-level FG output high-level voltage FG output low-level voltage FG output high-level voltage FG output low-level voltage FR output high-level voltage FR output low-level voltage Output saturation high-level voltage Output saturation low-level voltage Pre-drive current Output limit current ON voltage range OFF voltage range ON voltage range OFF voltage range Low voltage range High voltage range OPEN voltage VGSWL VGSWH VGSWOP － 3.0 － － － 2.0 1.0 － － VBRON VBROFF 2.5 － － － － 1.0 VSBON VSBOFF 2.5 － － － － 1.0 VOH VOL IVML ITL － － － 560 1.0 0.4 35 700 1.35 0.65 70 840 VFRH VFRL 4.1 － 4.4 0.2 － 0.4 VFG2H VFG2L 4.6 － 4.9 0.2 － 0.4 VFGH VFGL 4.5 － 4.8 0.2 － 0.4 EC, ECR ECOFFECOFF+ ECIN GECL GECM GECH 0 -75 15 -3 0.52 1.04 2.24 － -45 45 － 0.65 1.3 2.8 5 -15 75 3 0.78 1.56 3.36 IHA VHAR VINH VHYS － 1.0 50 5 0.7 － － 20 3.0 4.0 － 40 VHB 0.5 0.9 1.5 VPSON VPSOFF － 2.5 － － 1.0 － ICC1 ICC2 － － 0 6.2 0.2 9.1 Unit Conditions mA mA V V V µA V mVpp mV V mV mV µA A/V A/V A/V V V V V V V V V mA mA V V V V V V V PS=L, GSW=Open PS=H, GSW=Open Internal current circuit OFF Internal current circuit ON IHB=10mA One side input level Linear range:0.5～3.3V ECR=1.65V, GSW=L ECR=1.65V, GSW=L EC=ECR GSW=L,RNF=0.5Ω GSW=OPEN,RNF=0.5Ω GSW=H,RNF=0.5Ω IFG=-20µA IFG=3.0mA IFG2=-20µA IFG2=3mA IFR=-20µA IFR=3.0mA IOUT=-600mA IOUT=600mA EC=0V output open BR=0V BR=0V EC>ECR, SB=Open EC>ECR, SB=Open www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 3/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM Technical Note 3) BD6671FM (Unless otherwise specified, Ta=25℃, VCC=5.0V, VM=12V) Limits Parameter Symbol Min. Typ. Max. Circuit current 1 Circuit current 2 ON voltage range OFF voltage range Hall bias voltage Same phase input voltage range Mini. input level Hall hysteresis level + Hall hysteresis level Low voltage range High voltage range OPEN voltage range Input voltage range Offset voltage + Offset voltage Input current I/O gain low-level I/O gain medium-level I/O gain high-level Output ON resistance Output limit current low-level Output limit current medium-level Output limit current high-level High level voltage Low level voltage Charge pump output voltage Upper side saturation voltage Lower side saturation voltage Upper side saturation voltage Lower side saturation voltage VCP2H VCP2L 0.4 0.15 0.6 0.35 0.8 0.55 VCP1H VCP1L 0.25 0.2 0.45 0.4 0.65 0.6 VPUMP 12.5 17 19 VFGH VFGL 4.6 － － － － 0.4 RON ITLL ITLM ITLH － 340 680 1020 1.0 400 800 1200 1.35 460 920 1380 EC, ECR ECOFF+ ECOFFECIN GECL GECM GECH 0 5 -100 -11 0.28 0.56 1.12 － 50 -50 -2.5 0.35 0.70 1.40 5 100 5 0 0.42 0.84 1.68 VGSWL VGSWH VGSWOP － 2.0 － － － 1.3 0.6 － － VHAR VINH VHYS+ VHYS1.4 100 5 -40 － － 20 -20 3.6 － 40 -5 VHB 0.7 1.0 1.3 VPSON VPSOFF － 2.5 － － 1.0 － ICC1 ICC2 － 8 100 14 200 20 Unit Conditions µA mA V V V V mVpp mV mV V V V V mV mV µA A/V A/V A/V PS=L, GSW=Open PS=H, GSW=Open Internal current circuit OFF Internal current circuit ON IHB=10mA Both side input level Linear range: 0.5～3.0V GSW=M GSW=M EC=ECR=1.65V GSW=L GSW=M GSW=H IOUT=±600mA (upper + lower side) GSW=L GSW=M GSW=H IFG=-100µA IFG=+100µA VCC= 5V,VM=12V CP1=CP2=0.1µF ICP1=-4mA ICP1=+4mA ICP2=-4mA ICP2=+4mA Ω mA mA mA V V V V V V V www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM ●Block Diagram, application Circuit Diagram and Pin Function 1) BA6859AFP-Y Technical Note Fig.4 BA6859AFP-Y Block Diagram 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 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 © 2010 ROHM Co., Ltd. All rights reserved. 5/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM 2) BA6664FM Output to the motor will be opened at a chip tempe 175°C (Typ.). Do not use the IC in excess of a chip rature of temperature of 150°C. Technical Note Torque limit current and I/O gain settings are made by the RNF resistance value. Resistance of 0.4 to 1.0Ω is recommended. RNF 28 A3 2 A2 4 A1 7 GND 8 H1+ 9 Hall1 H1 + + - 0.5Ω DRIVER 27 TSD GAIN SWITCH VM GSW VCC RNF Capacitor for noise level mitigation. The recommended value is 0.47 µF to 10 µF. + 1µF I/O gain + 1µF Speed detection is attained by FG signal output. 26 25 VM GAIN CONTROL CURRENT SENSE AMP VCC + - TL HALL AMP FG 24 PS 23 EC 22 ECR 21 VCC PS SERVO SIGNAL The power saving mode is turned ON by low-level voltage, and the circuit current and motor output will stop. TORQUE SENSE AMP The motor torque current is controllable. If the ECR voltage is set between 1.6 and 2.2V, the maximum torque limit current will be obtained. 10 H2+ 11 Hall1 H2 12 H3+ 13 Hall1 H3 + + + + - FR 20 FG2 VCC The detection of motor rotation direction is possible. R DQ － CK Q 19 SB SHORT BRAKE 18 CNF 17 0.1µF The short brake is operated regardless of brake mode settings. Connect a capacitor for phase compensation. The recommended value is 0.1µF. BRAKE MODE BR 16 15 500Ω 500Ω Resistor for setting Hall input level . The recommended value is 200 Ω to 1k Ω. 14 VH Hall Bias Short brake and reversed brake settings are possible. FIN 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 (BA6664FM、BD6671FM) 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 © 2010 ROHM Co., Ltd. All rights reserved. 6/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM 3)BD6671FM Technical Note 200Ω H1 1000pF H1+ Hall comp H1- EXOR ＋ PWM Comp Hall bias FG3 ＋ － H2+ Hall Amp H2H3+ + + + - FG VH VM TSD A1 RNF A2 FIN 0.5Ω H2 1000pF ＋ － ※2 H3 1000pF H3GSW FIN ＋ － 200Ω Vcc U-Pre Driver Gain control Matrix OSC L -Pre Driver Driver GND CP1 0.1 µ F RNF1 A3 CP2 VG Charge Pump RNF2 UVLO PS 10kΩ 0.01µF 0.1 µF CNF 0.047µF Vcc Curre nt Limit Comp ＋ － ＋ Current Sense AMP PS Vcc EC servo ECR signal VM 1.65V 100 µ F ※1 Torque AMP ＋ － MODE Matrix Vcc － 10µF CL D CK Q QB 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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 H1+ H1H2+ H2H3+ H3GSW GND CP1 CP2 VG CNF MODE VCC Function Pin No Pin name 15 16 17 18 19 20 21 22 23 24 25 26 27 28 FIN VM ECR EC PS RNF2 A3 RNF1 A2 RNF1 A1 VM VH FG FG3 FIN Function Motor power supply pin Output voltage control reference pin Output voltage control 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 Output pin Motor power supply pin Hall bias pin FG Output pin FG3 Output pin GND Hall signal input pin Hall signal input pin Hall signal input pin Hall signal input pin Hall signal input pin Hall signal input pin Gain switching pin 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 supply pin *Heat radiation FIN: GND www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 7/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM ●I/O logic 1) BA6859AFP-Y Input conditions Pin. No 8 H1 + 1 2 3 4 5 6 L H M M H L 9 H1 M M M M M M 10 H2 + H L L H M M 11 H2 M M M M M M 12 H3 + M M H L L H 13 H3 M M M M M M Output conditions Forward rotation 6 A1 H L L H L H 5 A2 L H H L L H 4 A3 L H L H H L Reverse rotation 6 A1 L H H L H L 5 A2 H L L H H L 4 A3 H L H L L H Technical Note Input voltage Hi=2.6V Mid=2.5V Low=2.4V Note: Forward rotation ECECR 2) BA6664FM Input conditions Pin. No 9 H1 + L H M M H L 10 H1 M M M M M M 11 H2 + H L L H M M 12 H2 M M M M M M 13 H3 + M M H L L H 14 H3 M M M M M M Output conditions Forward rotation 7 A1 H L L H L H 4 A2 L H H L L H 2 A3 L H L H H L Reverse rotation 7 A1 L H H L H L 4 A2 H L L H H L 2 A3 H L H L L H Input voltage Hi=2.6V Mid=2.5V Low=2.4V 1 2 3 4 5 6 Note: Forward rotation ECECR 3)BD6671FM Output conditions Input conditions Pin. No 1 H1 + L H M M H L 2 H1 M M M M M M 3 H2 + H L L H M M 4 H2 M M M M M M 5 H3 + M M H L L H 6 H3 M M M M M M Forward rotation 24 A1 H L L H L H 22 A2 L H H L L H 20 A3 L H L H H L Reverse rotation Reverse rotation (MODE=L) (MODE=H) 24 A1 L H H L H L 22 A2 H L L H H L 20 A3 H L H L L H 24 A1 L L L L L L 22 A2 L L L L L L 20 A3 L L L L L L Input voltage Hi=2.6V Mid=2.5V Low=2.4V 1 2 3 4 5 6 Note: Forward rotation ECECR www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 8/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM ●I/O Timing Chart 1) BA6859AFP-Y, BA6664FM H1+ H 2+ H 3+ A1 Output current H1 - + H2+ Output current 30° Technical Note A1 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 © 2010 ROHM Co., Ltd. All rights reserved. 9/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM ●I/O Circuit 1) BA6859AFP-Y (1) Power saving (pin 21) 15KΩ 10KΩ Technical Note (6) FG output (pin 22) VCC 21 10kΩ 22 (2) Torque command input (pin 19, pin 20) (7) FR output (pin 18) 20 1kΩ 1kΩ 19 30kΩ 18 (3) Coil output (A1: pin 6, A2: pin 5, A3: pin 4) VM External RNF Register RNF (8) Short brake (17 pin) 10kΩ 500Ω 500Ω 13kΩ 17 6 5 4 GND 1kΩ 5kΩ 12kΩ (4) Hall input (H1+ : 8 pin, H1- : 9 pin, H2+ : 10 pin, H2- : 11 pin, H3+ : 12 pin, H3- : 13 pin) 1KΩ 1KΩ (9) Brake mode (15 pin) 15kΩ 15 (5) Hall bias(14 pin) 14 10kΩ 100KΩ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM 2) BA6664FM (1) Power saving (23 pin) 23 15KΩ 10KΩ Technical Note (7) FG output (19 pin) VCC 5kΩ 19 (2) Torque command input (21 pin, 22 pin) (8) FR output (20 pin) 1kΩ 1kΩ VCC 21 30kΩ 20 (3) Coil output (A1 : 7 pin, A2 : 4 pin, A3 : 2 pin) VM External RNFRegister 22 RNF 7 4 2 (9) Short Brake mode (18 pin) 10kΩ 500Ω 500Ω 13kΩ 18 (4) Hall input (H1+ : 9 pin, H1- : 10 pin, H2+ : 11 pin, H2- : 12 pin, H3+ : 13 pin, H3- : 14 pin) 1kΩ 5kΩ 12kΩ 1KΩ 1KΩ (10)Brake mode (16 pin) (5) Hall bias (15 pin) 15 16 15kΩ 10kΩ (11) Gain switch (26 pin) 100KΩ 100KΩ (6) FG output (24 pin) VCC 26 1KΩ 30KΩ 10kΩ 24 56KΩ 5KΩ 5KΩ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 11/17 2010.06 - Rev.A 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 Hn + Technical Note (6) Brake mode selection pin (13 pin) VCC 30KΩ 20KΩ VCC 13 Hn 1KΩ 1KΩ 25KΩ - 1KΩ 1KΩ (2) Gain switch (7pin) VCC VCC 100KΩ 7 1KΩ 75KΩ 10KΩ 10KΩ 25KΩ (7) Torque amp (ECR : 16 pin, EC : 17 pin) VCC 16,17 1KΩ (3)CP1 output (9pin) VCC VCC (8) Power saving (18 pin) VCC (9)RNF2(19 pin) VCC 50Ω 9 18 30KΩ 19 20KΩ 1KΩ 710Ω (4) CP2 / VG output (CP2 : 10 pin, VG : 11 pin) 50Ω VM 50Ω 10 11 (10) Output pin (A1 : 24 pin, A2 : 22 pin, A3 : 20 pin) VM 24 22 20 RNF1 (5) CNF pin (12 pin) VCC 50Ω 26 2KΩ 100KΩ 50Ω 27,28 (11) Hall bias (26 pin) VCC (12) FG / FG3 output (FG : 27 pin, FG3 : 28 pin) VCC VCC 12 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM ●Operation Explanation ●Torque Command Rotation direction ECECR Forward Reverse* Technical Note *Stops after detecting reverse rotation RNF [V] Forward Offset voltage Offset voltage + 3mV 1.65(ECR) Fig.11 EC[V] The I/O gain GEC from the EC pin to the RNF pin (output current) is determined by the RNF detection resistor. ①(BA6859AFP-Y) GEC=0.35/RNF [A/V] ･････(1) ②(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) ③(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) ④The following torque limit current ITL is obtained (BA6859AFP-Y, BA6664FM) ITL=0.35/RNF [A]･･･････････････････(2) ⑤(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 0.5Ω or below. ●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 ECECR Io ITL Forward torque Rotation direction Forward torque Reverse torque Reverse torque 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, 1.6V～2.2V 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 © 2010 ROHM Co., Ltd. All rights reserved. 13/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM ●Reverse Rotation Detection Function Technical Note Actual motor rotation at reverse detection H2+ H2H3+ H3D-FF + + EC ECR D CK + H:OUTPUT.OPEN (HIGH-IMPEDANCE) Q EC < ECR: Forward torque (forward rotation) EC > ECR: Deceleration (forward rotation) When the motor rotates in the reverse direction, the reverse rotation detection function will operate and the output will be in an open state. The motor rotates in a reverse direction with inertial force. Fig.13 Fig. 13 shows the construction of the reverse rotation detection circuit. Stop ・Forward rotation (ECECR) 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 Reverse “H” “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. ECECR 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 ON OFF OFF BR L Forward rotation Reverse rotation brake A ON O A ON A 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. MOTOR Fig.14 ●Hall Input The Hall element allows both serial and parallel connections. VCC H1 H3 H2 H1 H2 H3 VCC 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. 15-pin (Hall Bias) Parallel Connection 15-pin (Hall Bias) Serial Connection Fig.15 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 14/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM Technical Note ●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+ H1H2+ H2H3+ 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 © 2010 ROHM Co., Ltd. All rights reserved. 15/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM Technical Note (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.) BA6859AFP-Y BA6664FM BD6671FM 175 175 170 Hysteresis temperature [℃] (typ.) 25 15 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 Pin A Pin A P+ P+ N P+ N Transistor (NPN) Pin B C B E B P P+ N C E Pin B N N P N P substrate Parasitic element GND Parasitic element Parasitic element P substrate 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 © 2010 ROHM Co., Ltd. All rights reserved. 16/17 2010.06 - Rev.A BA6859AFP-Y,BA6664FM,BD6671FM ●Ordering part number Technical Note B A 6 Part No. 6859A 6664 6671 6 6 4 F M - E 2 Part No. BA BD Package FP-Y : HSOP25 FM : HSOP-M28 Packaging and forming specification E2: Embossed tape and reel HSOP25 13.6 ± 0.2 (MAX 13.95 include BURR) Tape Quantity Embossed carrier tape 2000pcs E2 The direction is the 1pin of product is at the upper left when you hold 2.75 ± 0.1 25 14 7.8 ± 0.3 5.4 ± 0.2 1 13 1.95 ± 0.1 1.9 ± 0.1 0.25 ± 0.1 S 0.11 0.8 0.36 ± 0.1 12.0 ± 0.2 0.1 S 0.3Min. Direction of feed ( reel on the left hand and you pull out the tape on the right hand ) 1pin Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. HSOP-M28 18.5 ± 0.2 (MAX 18.85 include BURR) 28 15 Tape +6° 4°−4° Embossed carrier tape 1500pcs E2 The direction is the 1pin of product is at the upper left when you hold Quantity Direction of feed 9.9 ± 0.3 7.5 ± 0.2 1.25 1 5.15 ± 0.1 14 +0.1 0.27 −0.05 S 2.2 ± 0.1 0.11 0.8 0.37 ± 0.1 0.1 S 0.5 ± 0.2 1.2 ± 0.15 ( reel on the left hand and you pull out the tape on the right hand ) 1pin (Unit : mm) Reel Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 17/17 2010.06 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. R1010A