BA6664FM Rohm Semiconductor, BA6664FM Datasheet

Page 1

... BA6859AFP-Y,BA6664FM,BD6671FM ●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). ● ...

Page 2

... BA6859AFP-Y,BA6664FM,BD6671FM ●Electrical characteristics 1) BA6859AFP-Y (Unless otherwise specified, Ta=25℃, V Parameter <Total device> Circuit current 1 Circuit current 2 <Power-saving > ON voltage range OFF voltage range <Hall bias> Hall bias voltage <Hall amp> Input bias current Same phase input voltage range Mini. input level H3 hysteresis level < ...

Page 3

... BA6859AFP-Y,BA6664FM,BD6671FM 2) BA6664FM(Unless otherwise specified, Ta=25℃, V Parameter <Total device> Circuit current 1 Circuit current 2 <Power-saving > ON voltage range OFF voltage range <Hall bias> Hall bias voltage <Hall amp> Input bias current Same phase input voltage range Mini. input level H3 hysteresis level <Torque Command > ...

Page 4

... BA6859AFP-Y,BA6664FM,BD6671FM 3) BD6671FM (Unless otherwise specified, Ta=25℃, V Parameter <Total device> Circuit current 1 Circuit current 2 <Power-saving > ON voltage range OFF voltage range <Hall bias> Hall bias voltage <Hall amp> Same phase input voltage range Mini. input level Hall hysteresis level + Hall hysteresis level - < ...

Page 5

... BA6859AFP-Y,BA6664FM,BD6671FM ●Block Diagram, application Circuit Diagram and Pin Function 1) BA6859AFP-Y Pd (W) 2.0 1.45 1 Fig.5 Power Dissipation Reduction (BA6859AFP-Y) * Reduced by 11.6 mW/℃ over 25℃, when mounted on a glass epoxy board ( 1.6 mm). www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Fig.4 BA6859AFP-Y Block Diagram BA6859AFP-Y Pin Function Table Pin No ...

Page 6

... Fig.7 Power Dissipation Reduction (BA6664FM、BD6671FM) * Reduced by 11.6 mW/℃ over 25℃, when mounted on a glass epoxy board ( 1.6 mm). www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Torque limit current and I/O gain settings are made by the RNF resistance value. ...

Page 7

... BA6859AFP-Y,BA6664FM,BD6671FM 3)BD6671FM 200Ω Hall comp H1+ H1 H1- 1000pF Hall Amp H2+ H2 H2- 1000pF H3 1000pF 200Ω GSW Vcc FIN GND CP1 0.1 µ F CP2 VG 0.1 µF CNF 0.047µF MODE Vcc Vcc 10µF BD6671FM Pin Function Pin No Pin name 1 H1+ Hall signal input pin ...

Page 8

... BA6859AFP-Y,BA6664FM,BD6671FM ●I/O logic 1) BA6859AFP-Y Input conditions Pin Note: Forward rotation EC<ECR Reverse rotation EC>ECR 2) BA6664FM Input conditions Pin Note: Forward rotation EC<ECR Reverse rotation EC>ECR 3)BD6671FM Input conditions Pin Note: Forward rotation EC<ECR Reverse rotation EC>ECR www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...

Page 9

... BA6859AFP-Y,BA6664FM,BD6671FM ●I/O Timing Chart 1) BA6859AFP-Y, BA6664FM H1 Output current H2+ A1 Output current A 2 Output current H3+ A2 Output current A 3 Output current H1+ A3 Output current 2) BD6671FM H1+ H2+ H3+ A1 Output current A1 Output voltage A2 Output voltage A2 Output current www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...

Page 10

... BA6859AFP-Y,BA6664FM,BD6671FM ●I/O Circuit 1) BA6859AFP-Y (1) Power saving (pin 21) 15KΩ 21 10KΩ (2) Torque command input (pin 19, pin 20) 1kΩ 20 (3) Coil output (A1: pin 6, A2: pin 5, A3: pin (4) Hall input (H1 pin, H1 pin, H2 pin, H2 pin, H3 pin, H3 pin) 1KΩ (5) (14 pin) Hall bias 100KΩ ...

Page 11

... BA6859AFP-Y,BA6664FM,BD6671FM 2) BA6664FM (1) Power saving (23 pin) 15KΩ 23 10KΩ (2) Torque command input (21 pin, 22 pin) 1kΩ 22 (3) Coil output ( pin pin pin (4) Hall input (H1 pin, H1 pin, H2 pin, H2 pin, H3 pin, H3 pin) 1KΩ (5) Hall bias (15 pin) 100KΩ (6) FG output (24 pin) VCC 10kΩ ...

Page 12

... BA6859AFP-Y,BA6664FM,BD6671FM 3) BD6671FM (1) Hall input ( pin, H1-: 2 pin, H2 pin, H2 pin, H3 pin, H3 pin) VCC + Hn 1KΩ 1KΩ 1KΩ 25KΩ (2) Gain switch (7pin) VCC VCC 100KΩ 1KΩ 75KΩ 7 10KΩ 10KΩ 25KΩ (3)CP1 output (9pin) VCC VCC 9 50Ω ...

Page 13

... G =0.35/RNF [A/V] (GSW=M) ECM G =0.70/RNF [A/V] (GSW=H) ECH ④The following torque limit current ITL is obtained (BA6859AFP-Y, BA6664FM) I =0.35/RNF [A]･･･････････････････(2) TL ⑤(BD6671FM) I =0.2/RNF [A] (GSW=L) ...

Page 14

... FR output signal pin outputs the FR signal of low(L) or high(H) after detecting the motor rotation direction. Motor rotation direction Forward Reverse ●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 L ...

Page 15

... 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 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. ...

Page 16

... IC or guarantee its operation. Do not continue to use the IC after operating this circuit or use the environment where the operation of the TSD circuit is assumed. BA6859AFP-Y BA6664FM BD6671FM (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. ...

Page 17

... BA6859AFP-Y,BA6664FM,BD6671FM ●Ordering part number Part No. Part No. BA 6859A 6664 BD 6671 HSOP25 13.6 ± 0.2 (MAX 13.95 include BURR) 2.75 ± 0 1.95 ± 0.1 S 0.1 S 0.8 0.36 ± 0.1 12.0 ± 0.2 HSOP-M28 18.5 ± 0.2 (MAX 18.85 include BURR 1.25 5.15 ± 0.1 0.37 ± ...

Page 18

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 ...