Mitsubishi M56755FP Datasheet

MITSUBISHI <CONTROL / DRIVER IC>

)

M56755FP

SPINDLE MOTOR DRIVER

DESCRIPTION

The M56755FP is a semiconductor integrated circuit designed for a
single chip controller for CD-ROM spindle motor.
M56755FP has a both (forward and reverse) motor torque control
by the motor speed control terminal.
M56755FP has the several braking mode that an user can flexibly
select in order to generate the reverse torque. Also, this device
includes a bias circuit for Hall Sensor, a current limit circuit and a
thermal shut down function.

FEATURES

●The supply voltage with wide range.
(4.5V to 13.2V)

●High motor drive current (1.2A)

● Motor current control for the both motor torque is possible.

● Reverse torque mode select (SHORT BRAKING, etc)

● Sleep mode

● Hall amplifier sensitivity select

● Automatic stop select (with reverse detected signal pin)

APPLICATION

CD-ROM, DVD, DVD-ROM etc.

PIN CONFIGURATION(TOP VIEW

S/S

RDS

FG

MODE2
MODE1

GND

VM

VCC2

EC

ECR

VCC1

HB

1
2
3

CI

4

7
8

13
14
15 22
16 21
17 20
18

36

W

35

V

34

U
RS

33

MODE3

325

MODE4

316
30

M56755FP

29
289
2710
2611
2512

Hw-

24

Hw+

23

Hv­Hv+
Hu-

19

Hu+

GND

BLOCK DIAGRAM

13

VM

14VCC2

MODE1

MODE2

MODE4

MODE3

FG

RDS

6

5

31

32

3

2

BRAKING
MODE
CHANGE

SENSE

FG
RDS

Outline 36P2R-D

UVW VCC1

34 35 36

120˚

MATRIX

+ - +- +-

19 20 21 22 23 24

TSD

Hall bias

18

HB

S/S

1

I / I

converter

4

CI

RS

+­+

V/I converter

15 16

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

Vref

1733

7
8
9

GND

10
11
12

25
26
27

GND

28

28
29
30

)

PIN DESCRIPTION

Pin No. FunctionSymbol

1

S/S

2

RDS

3

FG

4

CI

5

MODE2

6

MODE1

7 to 12

13
14
15
16
17
18
19
20
21
22
23
24

25 to 30

31
32
33
34
35
36

The pin[RDS] and pin[FG] are with pull-up resistor (10kohm).

*

GND
VM
VCC2
EC
ECR
VCC1
HB
Hu+
Hu­Hv+
Hv­H

W+
W-

H
GND
MODE4
MODE3
RS
U
V
W

2 3

Start / Stop
Reverse detected signal
Frequency generator output
Phase Compensation
Reverse torque mode select 2
Reverse torque mode select 1
GND
Motor supply voltage
12V supply voltage
Motor speed control
The reference voltage for EC
5V supply voltage
Bias for Hall Sensor
Hu+ Sensor amp. input
Hu- Sensor amp. input
H

V+ Sensor amp. input

H

V- Sensor amp. input

H

W+ Sensor amp. input

H

W- Sensor amp. input

GND
Hall amplifier sensitivity select
Automatic stop select
Motor current sense
Motor drive output U
Motor drive output V
Motor drive output W

MITSUBISHI <CONTROL / DRIVER IC>

M56755FP

SPINDLE MOTOR DRIVER

ABSOLUTE MAXIMUM RATING(Ta=25˚C

Symbol

VM
VCC2
VCC1
lo
VH(c)
Pt
Kθ
Tj
Topr
Tstg

Note1 ; There is no overing Pt (power dissipation) or the area of safety operation

*

Motor supply voltage
12V supply voltage
5V supply voltage
Output current
Sensor amp. Differential input range
Power dissipation
Thermal derating
Junction temperature
Operating temperature
Storage temperature

Parameter Conditions

13

pin maximum input voltage

14

pin maximum input voltage

17

pin maximum input voltage

*Note 1

19 24

to pins
Free Air
Free Air

Rating

16
16

7.0

1.5

4.5

1.2

9.6

150

-20 – +75

-40 – +125

Unit

V
V
V
A
V

W

mW/˚C

˚C
˚C
˚C

MITSUBISHI <CONTROL / DRIVER IC>

)

M56755FP

SPINDLE MOTOR DRIVER

RECOMMENDED OPERATING CONDITIONS

Symbol

VCC1
VCC2
VM
lo

5V Power supply
12V Power supply
Motor Power supply
Output drive current

Parameter

ELECTRICAL CHARACTERISTICS(VCC=5V, VCC2=12V, VM=12V, Ta=25˚C unless otherwise noted

Symbol Test conditions

Sleep Mode Supply current-1lcc1
lcc2
lcc3

Vsat
ECdead-

ECdead+
ECR
EC
Gio
Vlim
VH com
VHmin1
VHmin2

VHb
IHb

Von

Voff

ViH

ViL

VOL

Sleep Mode Supply current-2

Supply current-3

Saturation voltage

Control voltage

dead zone

Reference voltage Input range

Control voltage Input range

Control gain

Control limit

Hallsensorampcommonmodeinput range

Hall sensor amp. input signal level

Hall bias terminal output voltage

Hall bias terminal sink current

Motor start voltage

Motor stop voltage

mode pin input high voltage

mode pin input low voltage

2

pin [RDS], pin [FG] output low voltage

Parameter

3

13 14
17
17

Top and Bottom saturation voltage.
Load current 500mA

EC < ECR
EC > ECR

16
15

lo = Gio /Rsense [A/V]

llim=Vlim / Rsense [A]

19 24
19 24

input signal
Load current (IHb) 10mA.

and pin [MODE4] input voltage when makes
high level.

and pin [MODE4] input voltage when makes low
level.

at Io current = 1mA

Limits

Min. Typ. Max.

4.5

4.5

4.5

5.0

12.0

12.0

5.5

13.2

13.2
700

and pin total Input Current [ pin lo or open]
pin Input Current [ pin lo or open]
pin Input Current (EC=ECR=2.5V) [ pin Hi]

Unit

V
V
V

mA

1

1

1

pin Input voltage range. (3.3V DSP available)
pin Input voltage range. (3.3V DSP available)

– pins input range.
– pins

MODE4 = open
MODE4 = GND

1

pin input voltage when makes the motor start up.

*The ICs will be the active condition.
*The hall bias will be available.

1

pin input voltage when makes the motor stop.

*The ICs will be the sleep condition.
*The hall bias will be off.

6

pin [MODE1], pin [MODE2], pin [MODE3]

31

6

pin [MODE1], pin [MODE2], pin [MODE3]

31

5

325

32

Limits

Min. Typ. Max.

100

0

500

6.0

1.9

1.2

-50+5-25
+25-5+50

4.0

1.65

0.5

1.65

2.3

0.3

4.0

2.65

0.33

4.5

0.5

1.95

0.27

1.2

50
35

0.85

1.2

0.6

30

2.0

0.8

2.0

0.8

0.5

Unit

µA
µA

mA

V

mV

V
V

V/V

V
V

mVp-p

V

mA

V

V

V

V

V