BA6859AFM-E2_技术文档

System Motor Driver ICs for CD/DVD Players

1ch Spindle

Motor Driver ICs

No.10011EAT03

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).

●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℃)

Ratings

BA6664FM

7

Parameter

Symbol

Unit

BA6859AFP-Y

BD6671FM

7

Applied voltage

V_CC

V_M

7

15

V

Applied voltage

15

Applied voltage

V_G

-

20

V

Power dissipation

Operating temperature

Storage temperature

Output current

Pd

1450*¹

-40～+85

-55～+150

1300

2200*²

-40～+85

-55～+150

1300

2200*²

-40～+85

-55～+150

2500

mW

℃

Topr

Tstg

Iout

Tjmax

℃

mA

℃

Junction temperature

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

Ratings

BA6664FM

4.5～5.5

3.0～14

-

Parameter

Symbol

Unit

BA6859AFP-Y

4.5～5.5

3.0～14

-

BD6671FM

4.5～5.5

V_CC

V_M

V

Power supply voltage

VG pin voltage

4.0～13.2

8.5～19

V_G

www.rohm.com

2010.06 - Rev.A

1/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

●Electrical characteristics

1) BA6859AFP-Y (Unless otherwise specified, Ta=25℃, V_CC=5.0V, V_M=12V)

Limits

Parameter

Symbol

Unit

Conditions

Min.

Typ.

Max.

Circuit current 1

I_CC1

I_CC2

－

0

0.2

7.5

mA

PS=L

PS=H

Circuit current 2

5.0

<Power-saving >

ON voltage range

OFF voltage range

V_PSON

－

1.0

V

Internal circuit OFF

Internal circuit ON

V_PSOFF

2.5

－

Hall bias voltage

V_HB

0.5

0.9

1.5

V

I_HB=10mA

Input bias current

Same phase input voltage range

Mini. input level

I_HA

－

1.0

50

5

0.7

－

3.0

4.0

－

µA

V

V_HAR

V_INH

V_HYS

－

mVpp One side input level

mV

H3 hysteresis level

Input voltage range

Offset voltage -

20

40

E_C, E_CR

E_COFF-

E_COFF+

E_CIN

0

-80

20

－

-50

50

5

-20

80

V

Linear range:0.5～3.3V

E_CR=1.9V

mV

µA

Offset voltage +

E_CR=1.9V

Input bias current

I/O gain

-3

－

3

E_C=E_CR

G_EC

0.56

0.70

0.84

A/V

E_C=1.2, 1.7V

<FG>

FG output high-level voltage

FG output low-level voltage

Duty (reference values)

FR output high-level voltage

FR output low-level voltage

V_FGH

V_FGL

D_U

4.5

－

4.8

0.25

50

－

0.4

－

V

I_FG=-20µA

I_FG=3.0mA

－

%

V_FRH

V_FRL

4.1

4.4

－

V

I_FR=-20µA

I_FR=3.0mA

－

0.25

0.4

Output saturation high level voltage

Output saturation low level voltage

Pre-drive current

V_OH

V_OL

I_VML

I_TL

－

1.0

0.4

35

1.4

0.7

70

V

I_O=-600mA

I_O=600mA

－

mA

E_C=0V output open

Output limit current

560

700

840

ON voltage range

OFF voltage range

V_SBON

2.5

－

V

BR=0V

V_SBOFF

－

1.0

ON voltage range

OFF voltage range

V_BRON

2.5

－

V

E_C>E_CR, SB=Open

V_BROFF

－

1.0

●Reference: Data

10

8

1.5

1.0

0.5

0.0

85℃

1.0

-40℃

85℃

25℃

6

-40℃

4

25℃

0.5

2

-40℃

0

0.0

4.5

5

5.5

6

6.5

7

0

0.3

0.6

0.9

1.2

1.5

0

0.3

0.6

0.9

1.2

1.5

Output Current :I_OL[A]

Supply voltage :Vcc[v]

Output Current :IOH[v]

Fig.2 Output Saturation Voltage

at High Level

Fig.3 Output Saturation Voltage

at Low Level

Fig.1 Circuit Current 2

www.rohm.com

2010.06 - Rev.A

2/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

2) BA6664FM(Unless otherwise specified, Ta=25℃, V_CC=5.0V, V_M=12V)

Limits

Parameter

Symbol

Unit

Conditions

Min.

Typ.

Max.

Circuit current 1

I_CC1

I_CC2

－

0

0.2

9.1

mA

PS=L, GSW=Open

PS=H, GSW=Open

Circuit current 2

6.2

<Power-saving >

ON voltage range

OFF voltage range

V_PSON

－

1.0

V

Internal current circuit OFF

Internal current circuit ON

V_PSOFF

2.5

－

Hall bias voltage

V_HB

0.5

0.9

1.5

V

I_HB=10mA

Input bias current

I_HA

－

1.0

50

5

0.7

－

3.0

4.0

－

µA

V

Same phase input voltage range

Mini. input level

V_HAR

V_INH

V_HYS

－

mVpp One side input level

mV

H3 hysteresis level

Input voltage range

Offset voltage -

20

40

E_C, E_CR

E_COFF-

E_COFF+

E_CIN

0

－

-45

45

5

V

Linear range:0.5～3.3V

E_CR=1.65V, GSW=L

E_C=E_CR

-75

15

-15

75

mV

µA

Offset voltage +

Input bias current

-3

－

3

I/O gain low-level

G_ECL

0.52

1.04

2.24

0.65

1.3

2.8

0.78

1.56

3.36

A/V

GSW=L,RNF=0.5Ω

GSW=OPEN,RNF=0.5Ω

GSW=H,RNF=0.5Ω

I/O gain medium-level

I/O gain high-level

<FG>

G_ECM

G_ECH

FG output high-level voltage

FG output low-level voltage

<FG2>

V_FGH

V_FGL

4.5

4.8

0.2

－

V

I_FG=-20µA

I_FG=3.0mA

－

0.4

FG output high-level voltage

FG output low-level voltage

FR output high-level voltage

FR output low-level voltage

V_FG2H

V_FG2L

4.6

4.9

0.2

－

V

_IFG2=-20µA

I_FG2=3mA

－

0.4

V_FRH

V_FRL

4.1

4.4

0.2

－

V

I_FR=-20µA

I_FR=3.0mA

－

0.4

Output saturation high-level voltage

Output saturation low-level voltage

Pre-drive current

V_OH

V_OL

I_VML

I_TL

－

1.0

0.4

35

1.35

0.65

70

V

I_OUT=-600mA

I_OUT=600mA

－

mA

E_C=0V output open

Output limit current

560

700

840

ON voltage range

OFF voltage range

V_SBON

2.5

－

V

BR=0V

V_SBOFF

－

1.0

ON voltage range

OFF voltage range

Low voltage range

High voltage range

OPEN voltage

V_BRON

2.5

－

V

E_C>E_CR, SB=Open

V_BROFF

－

1.0

V_GSWL

V_GSWH

V_GSWOP

－

3.0

－

1.0

－

V

2.0

－

www.rohm.com

2010.06 - Rev.A

3/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

3) BD6671FM (Unless otherwise specified, Ta=25℃, V_CC=5.0V, V_M=12V)

Limits

Parameter

Symbol

Unit

Conditions

Min.

Typ.

Max.

Circuit current 1

Circuit current 2

I_CC1

I_CC2

－

100

14

200

20

µA

PS=L, GSW=Open

PS=H, GSW=Open

8

mA

<Power-saving >

ON voltage range

OFF voltage range

V_PSON

－

1.0

V

Internal current circuit OFF

Internal current circuit ON

V_PSOFF

2.5

－

Hall bias voltage

V_HB

0.7

1.0

1.3

V

I_HB=10mA

Same phase input voltage range

Mini. input level

V_HAR

V_INH

1.4

100

5

－

3.6

－

40

-5

mVpp Both side input level

Hall hysteresis level +

Hall hysteresis level -

Low voltage range

High voltage range

OPEN voltage range

Input voltage range

Offset voltage +

V_HYS+

V_HYS-

20

-20

mV

-40

V_GSWL

V_GSWH

V_GSWOP

－

2.0

－

0.6

－

V

1.3

－

E_C, E_CR

E_COFF+

E_COFF-

E_CIN

0

－

5

V

Linear range: 0.5～3.0V

GSW=M

5

50

100

5

mV

µA

Offset voltage -

-100

-11

-50

GSW=M

Input current

-2.5

0.35

0.70

1.40

0

E_C=E_CR=1.65V

GSW=L

I/O gain low-level

I/O gain medium-level

I/O gain high-level

G_ECL

0.28

0.56

1.12

0.42

0.84

1.68

A/V

G_ECM

G_ECH

GSW=M

GSW=H

I_OUT=±600mA

(upper + lower side)

Output ON resistance

R_ON

－

1.0

1.35

Ω

Output limit current low-level

Output limit current medium-level

Output limit current high-level

I_TLL

I_TLM

I_TLH

340

680

400

800

460

920

mA

GSW=L

GSW=M

GSW=H

1020

1200

1380

High level voltage

V_FGH

V_FGL

4.6

－

V

I_FG=-100µA

I_FG=+100µA

Low level voltage

－

0.4

V_CC= 5V,V_M=12V

CP1=CP2=0.1µF

Charge pump output voltage

V_PUMP

12.5

17

19

V

Upper side saturation voltage

Lower side saturation voltage

V_CP1H

V_CP1L

0.25

0.2

0.45

0.4

0.65

0.6

V

I_CP1=-4mA

I_CP1=+4mA

Upper side saturation voltage

Lower side saturation voltage

V_CP2H

V_CP2L

0.4

0.6

0.8

V

I_CP2=-4mA

I_CP2=+4mA

0.15

0.35

0.55

www.rohm.com

2010.06 - Rev.A

4/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

●Block Diagram, application Circuit Diagram and Pin Function

1)BA6859AFP-Y

Fig.4 BA6859AFP-Y Block Diagram

BA6859AFP-Y Pin Function Table

Pin No. Pin name

Function

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

N.C.

A3

A2

A1

GND

H1+

H1-

H2+

H2-

H3+

H3-

VH

N.C.

Output pin

GND pin

Hall signal input pin

Hall bias input pin

Pd (W)

2.0

1.45

1.0

BR

Brake mode selection pin

Capacitor connection pin for phase

compensation

16

CNF

0

25

50

75 85 100

125

150

Ta(℃)

17

18

19

20

21

22

23

24

SB

FR

ECR

EC

PS

FG

Short brake pin

Rotation detection pin

Output voltage control reference pin

Output voltage control pin

Power-saving pin

FG signal output pin

Power supply pin

Motor power supply pin

Resistance connection pin for output

current detection

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).

VCC

VM

25

RNF

FIN

GND

www.rohm.com

2010.06 - Rev.A

5/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

2)BA6664FM

Torque limit current and I/O gain settings are made by

the RNF resistance value.

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.

Resistance of 0.4 to 1.0Ωis recommended.

0.5Ω

RNF

Capacitor for noise level mitigation.

The recommended value is 0.47 µF to 10 µF.

28

27

26

RNF

VM

DRIVER

GSW

+

-

1µF

A3

A2

TSD

V_M

GAIN

SWITCH

2

VCC

I/O gain

GAIN

CONTROL

25

+

-

VCC

1µF

4

CURRENT

SENSE AMP

Speed detection is attained by FG signal output.

A1

+

-

FG

PS

TL

24

23

7

8

The power saving mode is turned ON by low-level voltage,

and the circuit current and motor output will stop.

HALL AMP

PS

GND

+

-

TORQUE

SENSE AMP

EC

SERVO

SIGNAL

22

H1+

The motor torque current is controllable.

+

-

ECR

FR

9

21

20

If the ECR voltage is set between 1.6 and 2.2V, the

maximum torque limit current will be obtained.

-

H1

Hall1

VCC

+

-

10

H2+

The detection of motor rotation direction is possible.

FG2

SB

+

-

11

19

18

R

H2-

D

Q

－

Q

The short brake is operated regardless of brake mode settings.

SHORT BRAKE

CK

+

-

12

H3+

CNF

Connect a capacitor for phase compensation.

The recommended value is 0.1µF.

17

+

-

13

0.1µF

BR

VH

Hall1

-

H3

BRAKE MODE

Hall Bias

FIN

16

15

14

Short brake and reversed brake settings are possible.

500Ω

Resistor for setting Hall input level

.

The recommended value is 200 Ωto 1k Ω.

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

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

N.C.

A3

N.C.

A2

N.C

N.C.

A1

GND

H1+

H1-

H2+

H2-

H3+

H3-

VH

N.C.

Output pin

N.C.

Output pin

N.C.

Output pin

GND pin

Pd[W]

Hall signal input pin

Hall bias input pin

2.2

2.0

BR

Brake mode pin

Capacitor connection pin for phase

compensation

17

CNF

18

19

20

21

22

23

24

25

26

27

SB

FG2

FR

ECR

EC

PS

FG

VCC

GSW

VM

Short brake pin

1.0

FG 3-phase component output pin

Rotation detection pin

Output voltage control reference pin

Output voltage control pin

Power-saving pin

FG signal output pin

Power supply pin

Gain switching pin

0

25

50

75 85 100

125

150

Ta(℃)

Fig.7 Power Dissipation Reduction (BA6664FM、BD6671FM)

*Reduced by 11.6 mW/℃over 25℃, when mounted on a glass epoxy board

(70 mm x 70 mm x 1.6 mm).

Motor power supply pin

Resistance connection pin for output

current detection

28

RNF

FIN

GND

www.rohm.com

2010.06 - Rev.A

6/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

3)BD6671FM

EXOR

200Ω

Hall comp

H1+

FG3

FG

＋

PWM

Comp

H1

H1-

H2+

H2-

H3+

＋

－

+

-

1000pF

Hall Amp

VH

Hall

bias

H2

VM

2

※

＋

－

+

-

1000pF

TSD

A1

H3

-

RNF

A2

0.5Ω

＋

－

1000pF

+

-

U-Pre

Driver

200Ω

Vcc

GSW

FIN

Matrix

Gain

control

Driver

OSC

L-Pre

Driver

GND

CP1

CP2

VG

RNF1

A3

Charge

Pump

0.1 µ F

0.1 µF

10kΩ

RNF2

PS

UVLO

0.01µF

Vcc

PS

Torque

＋

CNF

EC

－

＋

－

AMP

0.047µF

Vcc

＋

Current Limit Comp

servo

signal

MODE

Vcc

ECR

VM

－

Matrix

1.65V

Current

Sense AMP

10µF

CL

100µF

D

CK

Q

※1

REVERSE

DETECT

QB

※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

Motor power supply pin

Output voltage control reference pin

Output voltage control pin

Power-saving pin

1

2

3

4

H1+

H1-

H2+

H2-

Hall signal input pin

15

16

17

18

VM

ECR

EC

PS

Resistance connection pin for output

current detection

5

6

7

8

9

H3+

H3-

Hall signal input pin

19

20

21

22

23

RNF2

A3

Output pin

Resistance connection pin for output

current detection

GSW Gain switching pin

RNF1

A2

GND

CP1

GND

Output pin

Charge pump capacity connection

pin 1

Resistance connection for output

current

RNF1

Charge pump capacity connection

pin 2

Charge pump output pin

10

11

12

CP2

VG

24

25

26

A1

VM

VH

Output pin

Motor power supply pin

Hall bias pin

Capacitor connection pin for phase

compensation

CNF

13

14

MODE Brake mode switching pin

VCC Power supply pin

27

28

FG

FG3

FIN

FG Output pin

FG3 Output pin

GND

FIN

*Heat radiation FIN: GND

www.rohm.com

2010.06 - Rev.A

7/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

●I/O logic

1)BA6859AFP-Y

Output conditions

Forward rotation Reverse rotation

Input conditions

Pin. No

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

2

3

4

5

6

L

H

M

H

L

M

H

L

M

H

L

M

H

L

H

L

H

L

H

L

H

L

H

L

Input voltage

Hi=2.6V

Mid=2.5V

Low=2.4V

L

H

L

H

M

H

L

H

L

H

L

H

L

H

Note: Forward rotation EC<ECR

Reverse rotation EC>ECR

2)BA6664FM

Output conditions

Forward rotation Reverse rotation

Input conditions

Pin. No

9

10

11

12

13

14

7

4

2

7

4

2

H1

+

H1

-

H2

+

H2

-

H3

+

H3

-

A1

A2

A3

A1

A2

A3

1

2

3

4

5

6

L

H

M

H

L

M

H

L

M

H

L

M

H

L

H

L

H

L

H

L

H

L

H

L

Input voltage

Hi=2.6V

Mid=2.5V

Low=2.4V

L

H

L

H

M

H

L

H

L

H

L

H

L

H

Note: Forward rotation EC<ECR

Reverse rotation EC>ECR

3)BD6671FM

Output conditions

Reverse rotation Reverse rotation

Input conditions

Forward rotation

24 22 20

A1 A2 A3

(MODE=L)

(MODE=H)

Pin. No

1

2

3

4

5

6

24

22

20

24

22

20

H1 H1 H2 H2 H3 H3

A1 A2 A3

+

-

+

-

+

-

1

2

3

4

5

6

L

M

H

M

H

L

H

L

H

L

H

L

H

L

H

L

Input voltage

Hi=2.6V

H

M

H

L

M

L

M

H

L

M

Mid=2.5V

Low=2.4V

L

H

L

H

M

H

L

H

L

H

L

H

L

H

Note: Forward rotation EC<ECR

Reverse rotation EC>ECR

www.rohm.com

2010.06 - Rev.A

8/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

●I/O Timing Chart

1) BA6859AFP-Y, BA6664FM

H1+

H 2+

H 3+

30°

A1

Output current

H1 - + H2+

A1

Output current

A 2

Output current

H2 - + H3+

A2

Output current

A 3

Output current

H3 - + H1+

A3

Output current

Fig. 9

2) BD6671FM

H1+

H2+

H3+

30°

A1 Output current

A1 Output voltage

A2 Output voltage

A2 Output current

Fig. 10

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2010.06 - Rev.A

9/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

●I/O Circuit

1)BA6859AFP-Y

(1) Power saving (pin 21)

(6) FG output (pin 22)

VCC

15KΩ

21

10KΩ

10kΩ

22

(2) Torque command input (pin 19, pin 20)

(7) FR output (pin 18)

1kΩ

19

20

30kΩ

18

(3) Coil output (A1: pin 6, A2: pin 5, A3: pin 4)

V_M

External RNF Register

RNF

(8) Short brake (17 pin)

10kΩ

500Ω

13kΩ

17

6

5

4

1kΩ

5kΩ

12kΩ

GND

(4) Hall input (H1+ : 8 pin, H1- : 9 pin, H2+ : 10 pin,

H2- : 11 pin, H3+ : 12 pin, H3- : 13 pin)

1KΩ

(9) Brake mode (15 pin)

15kΩ

15

(5) Hall bias(14 pin)

14

10kΩ

100KΩ

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2010.06 - Rev.A

10/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

2)BA6664FM

(1) Power saving (23 pin)

(7) FG output (19 pin)

VCC

15KΩ

23

5kΩ

10KΩ

19

(2) Torque command input (21 pin, 22 pin)

(8) FR output (20 pin)

VCC

1kΩ

21

22

30kΩ

20

(3) Coil output (A1 : 7 pin, A2 : 4 pin, A3 : 2 pin)

V_M

External RNFRegister

RNF

(9) Short Brake mode (18 pin)

7

4

2

10kΩ

500Ω

13kΩ

18

1kΩ

5kΩ

12kΩ

(4) Hall input (H1+ : 9 pin, H1- : 10 pin, H2+ : 11 pin,

H2- : 12 pin, H3+ : 13 pin, H3- : 14 pin)

1KΩ

(10)Brake mode (16 pin)

16

15kΩ

(5) Hall bias (15 pin)

15

10kΩ

(11) Gain switch (26 pin)

100KΩ

(6) FG output (24 pin)

VCC

5KΩ

1KΩ

26

30KΩ

10kΩ

56KΩ

24

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2010.06 - Rev.A

11/17

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)

(6) Brake mode selection pin (13 pin)

VCC

Hn^-

30KΩ

20KΩ

13

Hn⁺

1KΩ

25KΩ

(2) Gain switch (7pin)

VCC

(7) Torque amp (ECR : 16 pin, EC : 17 pin)

VCC

100KΩ

1KΩ

75KΩ

7

10KΩ

16,17

1KΩ

25KΩ

(3)CP1 output (9pin)

VCC VCC

(8) Power saving (18 pin)

VCC

(9)RNF2(19 pin)

VCC

30KΩ

710Ω

18

9

50Ω

1KΩ

19

20KΩ

(4) CP2 / VG output (CP2 : 10 pin, V_G: 11 pin)

(10) Output pin (A₁: 24 pin, A₂: 22 pin, A₃: 20 pin)

V_M

50Ω

11

VM

50Ω

24

22

20

10

RNF1

(5) CNF pin (12 pin)

VCC

(11) Hall bias (26 pin)

(12) FG / FG3 output (FG : 27 pin, FG3 : 28 pin)

VCC

50Ω

12

27,28

50Ω

26

2KΩ

100KΩ

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2010.06 - Rev.A

12/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

●Operation Explanation

●Torque Command

Rotation direction

Forward

EC<ECR

EC>ECR

Reverse*

*Stops after detecting reverse rotation

The I/O gain G_ECfrom the EC pin to the RNF pin (output current) is determined

by the RNF detection resistor.

①(BA6859AFP-Y)

Forward

Offset voltage -

Offset voltage +

R_NF

[V]

G

_EC=0.35/RNF [A/V] ･････(1)

②(BA6664FM)

G_ECL=0.325/RNF [A/V] (GSW=L)

G_ECM=0.60/RNF [A/V] (GSW=OPEN)

3mV

G

_ECH=1.4/RNF [A/V] (GSW=H)

③(BD6671FM)

G_ECL=0.175/RNF [A/V] (GSW=L)

G_ECM=0.35/RNF [A/V] (GSW=M)

E_C[V]

1.65(ECR)

Fig.11

G

_ECH=0.70/RNF [A/V] (GSW=H)

④The following torque limit current ITL is obtained (BA6859AFP-Y, BA6664FM)

I_TL=0.35/RNF [A]･･･････････････････(2)

⑤(BD6671FM)

I_TLL=0.2/RNF [A] (GSW=L)

I_TLM=0.4/RNF [A] (GSW=M)

I

_TLH=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 0.5Ωor 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

EC<ECR

Rotation direction

Forward torque

Reverse torque

EC>ECR

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, 1.6V～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

2010.06 - Rev.A

13/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

●Reverse Rotation Detection Function

Actual motor rotation at reverse detection

D-FF

EC < ECR: Forward torque (forward rotation)

H2+

H2-

+

-

Q

D

H3+

H3-

+

-

EC > ECR: Deceleration (forward rotation)

CK

H:OUTPUT.OPEN

When the motor rotates in the reverse direction, the reverse rotation

detection function will operate and the output will be in an open state.

+

-

EC

ECR

(HIGH-IMPEDANCE)

Fig.13

The motor rotates in a reverse direction with inertial force.

Stop

Fig. 13 shows the construction of the reverse rotation detection circuit.

・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

Forward

FR signal output

“H”

“L”

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

EC>ECR

Reverse rotation brake

Short brake

L

Forward rotation

BR

H

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

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

ON

O

A

ON

MOTOR

Fig.14

●Hall Input

The Hall element allows both serial and parallel connections.

Set the Hall input voltage between 1.0 and 4.0 V. Compute the

V_CC

resistance between the VH and VCC pins in consideration of the

flowing current of the Hall device.

H1

H2

H3

H2

H1

15-pin (Hall Bias)

Parallel Connection

15-pin (Hall Bias)

Serial Connection

Fig.15

www.rohm.com

2010.06 - Rev.A

14/17

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+

H1-

+

-

H2

H3

H2+

+

-

FG2

FG

H2-

+

-

H3+

H3-

Fig. 16

H₁waveform

H₂waveform

H₃waveform

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.

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2010.06 - Rev.A

15/17

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

BA6664FM

175

170

25

15

25

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.

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

B

C

Pin A

E

B

C

E

P⁺

N

P

N

P

Parasitic

element

Parasitic

element

P substrate

GND

Parasitic element

GND

Other adjacent

elements

Parasitic element

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

2010.06 - Rev.A

16/17

Technical Note

BA6859AFP-Y,BA6664FM,BD6671FM

●Ordering part number

B

A

6

4

F M

-

E

2

Part No.

BA

Part No.

6859A

6664

Package

FP-Y : HSOP25

FM : HSOP-M28

Packaging and forming specification

E2: Embossed tape and reel

BD

6671

HSOP25

13.6 0.2

(MAX 13.95 include BURR)

Tape

Embossed carrier tape

2000pcs

Quantity

2.75 0.1

25

14

13

E2

Direction

of feed

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

(

)

1

0.25 0.1

(Unit : mm)

+6°

1.95 0.1

S

0.1

S

0.8

0.36 0.1

12.0 0.2

Direction of feed

1pin

Reel

Order quantity needs to be multiple of the minimum quantity.

∗

HSOP-M28

Tape

Embossed carrier tape

18.5 0.2

(MAX 18.85 include BURR)

Quantity

1500pcs

4°

−4°

28

15

E2

Direction

of feed

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

1.25

5.15 0.1

+0.1

−0.05

0.27

S

0.37 0.1

0.8

0.1

S

Direction of feed

1pin

Reel

Order quantity needs to be multiple of the minimum quantity.

(Unit : mm)

∗

www.rohm.com

2010.06 - Rev.A

17/17

Notice

N o t e s

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, commu-

nication 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, fuel-

controller 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

R1010

A


型号：	BA6859AFM-E2
厂家：	ROHM
描述：	AC Motor Controller, 1.3A, PDSO28, ROHS COMPLIANT, HSOP-28 电动机控制光电二极管
文件：	总18页 (文件大小：530K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BA6859AFM-E2 [ROHM]

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