Mitsubishi M56787FP Datasheet

MITSUBISHI <CONTROL / DRIVER IC>

)

M56787FP

SPINDLE MOTOR DRIVER

DESCRIPTION

The M56787FP is a semiconductor integrated circuit in order to
drive the spindle motor.

FEATURES

●Low motor echo noise.

●3.3V DSP available.

●Large power dissipation package(Power Package).

●High motor drive current .

●Wide dynamic range.

●Motor current control for both motor torque directions.

●Reverse torque mode select [SHORT BRAKING,etc].

●Sleep mode.

●FG signal output terminal.

●FG pulse select.

●Automatic stop.

APPLICATION

CD-ROM, DVD, DVD-ROM, DVD-RAM etc.

PIN CONFIGURATION(TOP VIEW

N.C
N.C

S/S

FGS

FG

CI

BRS

GND

13
14

R

S

15 28

VCC2

16
17

EC

18 25

ECR

V

CC1

19

HB

20

N.C

21

1
2
3
4

7
8

Outline 42P9R-A

42
41
40
39
385
376
36
35
349

M56787FP

M56787FP

3310
3211
3112
30
29

27
26

24
23
22

N.C
N.C

W
V
U
MGND

TP

GND

Hw­Hw+

Hv­Hv+
Hu-

Hu+
N.C

N.C: no connection

BLOCK DIAGRAM

CI

6

15

RS

16

VCC2

BRS

FG

FGS

7

5

4

BRAKING
MODE
CHANGE

REVERSE
DETECT

FG
&
SELECT

CURRENT
SENSE & LIMIT

U

38 39 40

+

-

23 24 25 26 27 28

V

120˚

MATRIX

+

W

+

-

-

MGND

37

TSD

HALL
BIAS

20

HB

S/S

3

36

TP

VCC1

19

CONTROL

17 18

EC ECRHu+ Hu- Hv+ Hv- Hw+ Hw-

8 to 14

29 to 35

1

2

21

22

41

42

GND

GND

N.C

N.C

N.C

N.C
N.C

N.C

MITSUBISHI <CONTROL / DRIVER IC>

M56787FP

SPINDLE MOTOR DRIVER

PIN DESCRIPTIONS

Pin No. Symbol Function

1 42

N.C

2

N.C

3
4

FGS FG pulse select

5

FG Frequency generator output

6

CI Phase Compensation

7

BRS Reverse torque mode select
GND

15
16
17
18
19
20
21

S

R
V

CC2 12V supply voltage

EC
ECR
V

CC1

HB
N.C

Start / Stop S/S

GND
Motor current sense

Motor speed control
The reference voltage for EC
5V supply voltage
Bias for Hall Sensor

* Pull-up resistors (10kohm) are included in the circuits connected to [FG] pin.
* Note1. The pin (TP) is test terminal. Please make an open the pin (TP).

ABSOLUTE MAXIMUM RATING (Ta=25˚C)

Symbol Rating Unit

R

S
CC2 12V supply voltage 16 V

V
VCC1

Motor supply voltage

5V supply voltage V

Io Output current 1.5 A
VH(c)
Pt

Kθ
Tj

Sensor amp.
Differential input range

Power dissipation
Thermal derating

Junction temperature
Topr Operating temperature -20 – +75
Tstg

Storage temperature

*Note2 ; The ICs must be operated within the Pt (power dissipation) or the area of safety operation

Parameter Conditions

15 pin
16 pin
19 pin

Note 2

23 – 28 pins

Free Air
Free Air

Pin No. Symbol Function

N.C

41
40
39
38
37
36

29 –358 –14

28
27
26
25
24
23
22

2424

N.C
W
V
U
MGND

TP
GND
Hw-

Hw+
Hv­Hv+
Hu­Hu+
N.C

Motor drive output W
Motor drive output V
Motor drive output U
Motor GND
Test
GND

Hw- Sensor amp. input
Hw+ Sensor amp. input
Hv- Sensor amp. input
Hv+ Sensor amp. input
Hu- Sensor amp. input
Hu+ Sensor amp. input

16 V

7.0

4.5

1.2

9.6

150

-40 – +125

Note1

V

W

mW/˚C

˚C
˚C
˚C

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter

CC1

V

CC2 12V Power supply V13.24.5 12.0

V

5V Power supply

Io Output drive current

Min. Typ. Max.

Limits

5.04.5 5.5

1000

Unit

V

mA

MITSUBISHI <CONTROL / DRIVER IC>

M56787FP

SPINDLE MOTOR DRIVER

ELECTRICAL CHARACTERISTICS (VCC1=5V, VCC2=12V , Ta=25˚C unless otherwise noted.)

Symbol Parameter

Isleep Sleep Mode Supply current

Supply currentIcc

Vsat Saturation voltage
ECdead-

ECdead+

Control voltage dead zone

ECR Reference voltage Input range
EC Control voltage Input range

CC1& VCC2 pin total Current

V

(at S/S pin low or open)

CC1& VCC2 pin total Current

V
(EC=ECR=1.5V) [S/S pin High]

Top and Bottom saturation voltage.
(Load current :500mA)

EC < ECR
EC > ECR

18

pin [3.3V DSP available]

17

pin..[3.3V DSP available]

Conditions

Min. Typ. Max.

Gio Control gain Io = Gio / Rsense [A/V] 0.4 V/V0.460.34
Vlim Control limit Ilim = Vlim / Rsense [A] 0.3 0.330.27 V

VH com
VHmin Hall sensor amp. input signal level

Hall sensor amp
common mode input range

23 – 28

pins23 – 28

pins
VHb Hall bias terminal output voltage Load current (IHb) =10 mA.
IHb Hall bias terminal sink current

[S/S]pin input voltage when it starts up the motor.

Von

Motor start voltage

*The IC is in the active condition.
*The hall bias are available.

[S/S]pin input voltage when it stops the motor.

Voff

Motor stop voltage

*The IC is in the sleep condition.
*The hall bias are off.

V

iH1 3.6 VBRS input high voltage

ViM

BRS input middle voltage

BRS input voltage that the short braking is selected
when the reverse torque.

BRS input voltage that the free run is selected when
the reverse torque.

Note3.

BRS input voltage that the reverse braking is selected
when the reverse torque.

ViH2 2.0 VLogic input high voltage

V

VOL

iL2

Logic input
Low voltage

[FG] pin
output low voltage

[FGS] input voltage
when it is HIGH.

[FGS] input voltage
when it is LOW.

Io current = 1mA 0.5 V

Limits

10

10

1.2 1.9 V

-60 -30 0
+600 +30

0 3.3

1.65 V

1.650 3.3

1.3 4.4

2.0

0.8

0.8 VViL1 BRS input low voltage

0.8 V

Unit

µA

mA

mV

V

V

mVp-p60

V0.85 1.20.6

mA30

V

V

V2.21.6

*Note3. The ViM is the limit in case of external voltage input control. The free run mode is selected when the BRS pin is open, too.

THERMAL CHARACTERISTICS

Symbol Parameter Unit

TSD

Thermal Shut Down 165

Function start temperature of IC Function stop temperature of IC

Min. Typ. Max. Min. Typ. Max.

125

˚C