Datasheet M56788FP Datasheet (Mitsubishi)

MITSUBISHI <CONTROL / DRIVER IC>

)

M56788FP

5 CHANNEL ACTUATOR DRIVER

DESCRIPTION

The M56788FP is a semiconductor integrated circuit in order 5ch
actuator.

FEATURES

● Low saturation voltage.

● 3.3V DSP available.

● There are two motor power supplies.

Vm1 CH1,2 motor power supply-1
Vm2 CH3,4,5 motor power supply-2

● Built-in OP amp. for Regulator.
(It enables a Regulator which consists of external PNP Tr.s and
resistors.)

● Flexible Input amp. setting.(It enables PWM control.)

● Low cross-over distortion.(4.5V–13.2V)

● Wide supply voltage range.(4.5V–13.2V)

● Built-in Thermal Shut Down circuit.

● Built-in Mute circuit.(two systems)

MUTE1:CH1–4, MUTE2:CH5

APPLICATION

MD, CD-audio, CD-ROM, VCD,DVD etc.

PIN CONFIGURATION(TOP VIEW

CH3IN

1

OUT3

2

IN3-

3

VBS2

4

Vm2

N.C

GND

7

IN3+

8

VM3-

VM3+

GND

VM4+

VM4-

13

VM5+

14

VM5-

15 28

OUT5

16

IN5-

17

IN5+

18 25

IN4+

19

IN4-

20

OUT4

21

Outline 42P9R-B

M56788FP

42
41
40
39
385
376
36
35
349
3310
3211
3112
30
29

27
26

24
23
22

REG+
REGB
IN1+
VBS1
Vm1
IN1­OUT1
VM1­VM1+
GND
VM2+
VM2­OUT2
GND
IN2­IN2+
MUTE1
MUTE2
SS.GND
VREF
VREFO

N.C: no connection

IN1+

IN1-

OUT1

VM1(+)

VM1(-)

VM2(+)

VM2(-)

OUT2

IN2-

IN2+

VREFO

VREF

REGB

REG+

Vm1

38

40
37
36

+

34

-

-

35

+

+

32

-

-

31

+

30

28
27

22

­+

23

VBS2

41

VREG

42

+

-

­+

VBS1

VREF

CH1

x5

CH2

x5

-

+

VBS1

E1

VBS1

VBS1

VBS1

E2

1.25v

SS.GND

R

R

Vrefm1

BIAS

MUTE1

VBS1

39 4

+

Vm1 Vm2

-

VBS1

Low,Open
MUTE ON

1–4

CH

252624

MUTE2

VBS2

Hi:Sleep

5CH

7
GND(4PINS)

+

-

Vrefm2

VREFO

SLEEP

TSD

2911

33

Vm2

5

VBS2

-

VBS2

VBS2

VBS2

E4

VBS2

VBS2

E5

E3

CH3

x8

CH4

x8

CH5

x8

+

+

-

­+

+

-

­+

-

+

+

-

­+

­+

R

R

3
8
2
1

10

9

12

13

20
19

21

14

15

17
18
16

IN3­IN3+

OUT3
CH3IN

VM3(+)

VM3(-)

VM4(+)

VM4(-)

IN4­IN4+
OUT4

VM5(+)

VM5(-)

IN5­IN5+
OUT5

PIN FUNCTION

Symbol SymbolTerminal Terminal function Terminal Terminal function

1
2
3
4
5
6

7 , 11

8

9 30
10 31
12
13 34
14
15
16
17 38
18 39
19
20 41
21 42

CH3IN

OUT3

IN3-

VBS2

Vm2

N.C N.C
GND Motor GND
IN3+ E3 amplifier non-inverted input

VM3(-) CH3 inverted output
VM3(+) CH3 non-inverted output
VM4(+) CH4 non-inverted output

VM4(-) CH4 inverted output
VM5(+) CH5 non-inverted output

VM5(-) CH5 inverted output

OUT5 E5 amplifier output

IN5- E5 amplifier inverted input
IN5+ E5 amplifier non-inverted input
IN4+ E4 amplifier non-inverted input

IN4- E4 amplifier inverted input

OUT4 E4 amplifier output

CH3 non-inverted input
E3 amplifier output
E3 amplifier inverted input
Bootstrap power supply
Motor power supply

22
23
24
25
26
27
28

29 , 33

32

35
36
37

40

MITSUBISHI <CONTROL / DRIVER IC>

M56788FP

5 CHANNEL ACTUATOR DRIVER

VREF0

VREF

SS.GND

GND Motor GND

VBS1 Bootstrap power supply

REGB Regulator PNP base connect
REG+ Regulator voltage setting resistor

Reference voltage output
Reference voltage input
Small signal GND

CH5 mute MUTE2
CH1–4 mute MUTE1
E2 amplifier non-inverted inputIN2+
E2 amplifier inverted inputIN2-

E2 amplifier outputOUT2
CH2 inverted outputVM2(-)
CH2 non-inverted outputVM2(+)
CH1 non-inverted outputVM1(+)
CH1 inverted outputVM1(-)
E1 amplifier outputOUT1
E1 amplifier inverted inputIN1­Motor power supplyVm1

E1 amplifier non-inverted inputIN1+

ABSOLUTE MAXIMUM RATING (Ta=25˚C )

Symbol Parameter Conditions Rating Units

VBS

Vm

Io

Vin

Pt

Kq

Tj

Topr
Tstg

Bootstrap power supply

Motor power supply

Output Current

Maximum input voltage of terminals

Power dissipation

Thermal derating

Junction temperature

Operating temperature

Storage temperature

VBS power supply
Vm power supply

23, 25, 26, 27, 28, 37, 40PIN
1, 3, 8, 17, 18, 19, 20, 42PIN
Free Air
Free Air

15
15

500
0–VBS1
0–VBS2

1.2

9.6

150

-20–+75

-40–+150

RECOMMENDED OPERATING CONDITIONS

Symbol

Vm1,Vm2

Motor power supply

Parameter

VBS1,VBS2 Bootstrap power supply

Min

Limits

Typ Max

5.0

Vm*+1.0

Units

V
V

V
V

mA

V
V

W

mW/˚C

˚C
˚C

˚C

MITSUBISHI <CONTROL / DRIVER IC>

M56788FP

5 CHANNEL ACTUATOR DRIVER

ELECTRICAL CHARACTERISTICS (Ta=25˚C, VBS=Vm=5V unless otherwise noted.)

Symbol Parameter Conditions

Icc1 Supply current-1 VBS1,VBS2,Vm1,Vm2 current 35 50 mA
Icc2 Supply current-2

Vsat1 CH1–5 Saturation voltage

Voff1 CH1 output offset voltage
Voff2 CH2 output offset voltage
Voff3 CH3 output offset voltage
Voff4 CH4 output offset voltage
Voff5 CH5 output offset voltage

Gain1

Gain2

Gain3

Gain4

Gain5

VinE

VoutE

VofE

IinE

Reg-out

VinVREF

VofVREF

IinVREF
Vmute-on
Vmute-off

Imute

CH1 Voltage Gain between input
and output

CH2 Voltage Gain between input
and output

CH3 Voltage Gain between input
and output

CH4 Voltage Gain between input
and output

CH5 Voltage Gain between input
and output

E1,2,3,4,5 amplifier input voltage
range

E1,2,3,4,5 amplifier output
voltage range

E1,2,3,4,5 amplifier offset voltage
E1,2,3,4,5 amplifier input current

Regulator output voltage range
VREF amplifier input voltage

range
VREF amplifier offset voltage Vin=1.5V ±2mA load

VREF amplifier input current VREF=1.5V
Mute-on voltage Mute-on

Mute-off voltage
Mute terminal input current

VBS1,VBS2,Vm1,Vm2 current at Sleep Mode
(MUTE 1=MUTE 2=0V).

Top and Bottom saturation voltage.
Load current 0.5A and no bootstrap.

VREFO=OUT1=1.5V
VREFO=OUT2=1.5V
VREFO=CH3IN=1.5V
VREFO=OUT4=1.5V
VREFO=OUT5=1.5V
{VM1(+)–VM1(-)}
(OUT1–VREFO)
{VM2(+)–VM2(-)}
(OUT2–VREFO)

{VM3(+)–VM3(-)}
(CH3IN–VREFO)

{VM4(+)–VM4(-)}
(OUT4–VREFO)

{VM5(+)–VM5(-)}
(OUT5–VREFO)
E1,E2 amp
E3,E4,E5 amp
E1,E2 amp(no load)
E3,E4,E5 amp(no load)
Vin = 1.5V(at buffer )
IN+=IN-=1.5V
At VBS=7.5V, Regulator voltage setting

resistor 10K/30K, connects external PNP.

Mute-off
Mute terminal input current(at 5V input

voltage)

Min

-41

-41

-47

-47

-47

4.5

4.5

7.2

7.2

7.2

0.5

0.5

0.5

0.5

-10

-1.0

4.8

1.0

-10

-1.0

2.0

Limits

Typ Max

1.3 2.2 mA

1.35 1.9 V

41 mV
47
47
47

5

5

8

8

8

-0.05

5.0

-0.05

170

5.5

5.5

8.8

8.8

8.8

VBS1-2.0
VBS2-2.0
VBS1-0.5
VBS2-0.5

+10

0

5.2

VBS1-2.0

+10

0

0.8

250

Units

mV41

mV
mV
mV

V/V

V/V

V/V

V/V

V/V

V
V
V
V

mV

µA

V

V

mV

µA

V
V

µA

MITSUBISHI <CONTROL / DRIVER IC>

M56788FP

5 CHANNEL ACTUATOR DRIVER

MUTE Function

M56788FP has 2 MUTE terminals and the functions are as follows.

MUTE 1

26 pin

High High ENABLE ENABLE ENABLE ENABLE

Low/Open

High

Low/Open

When both MUTE1 inputs and MUTE 2 inputs are low voltage or open, the IC is in Sleep Mode.

INPUT and OUTPUT CHARACTER I STICS of EACH CHANNELS

CH1,2

1.5V

Reference 1.5V

Low/Open
Low/Open

VREFO

VREF

OUT

IN-

IN+

MUTE 2

25 pin

High

Power and Control Amp.
circuits of CH1 to CH4.

DISABLE

ENABLE

DISABLE

Vm1

-

r

+

Vrefm1 Amp.

r

-

+

Vref Amp.

-

+

Input Amp.

Vrefm1

R 2.5R

+

-

R 2.5R

R 2.5R

+

-

R 2.5R

Power and Control Amp.
circuits of CH5.

ENABLE ENABLE
DISABLE
DISABLE DISABLE

<INPUT>

1.5V

VM+

<OUTPUT>

VM-

Vrefm1

(Vm/2)

Gain=x5

VREF Amp. VREG Amp.

ENABLE

OUT

0.2V

VM+

0.5V

0.5V

ENABLE
ENABLE
ENABLE

VM-

CH3

1.5V

OPOUT

Reference 1.5V

CH4,5

1.5V

Reference 1.5V

VREFO

VREF

CH3IN

OP-

OP+

VREFO

VREF

OUT

IN-

IN+

Vm2

r

+

r

Vrefm2 Amp.

-

+

Vref Amp.

-

+

OP Amp.

Vm2

r

+

Vrefm2 Amp.

r

-

+

Vref Amp.

-

+

Input Amp.

<INPUT>

-

R4R

R4R

R4R

R4R

+

+

-

-

Vrefm2

VM3+

VM3-

Gain=x8

1.5V

<OUTPUT>

Vrefm2

(Vm/2)

0.2V

0.8V

0.8V

<INPUT>

-

R4R

R4R

R4R

R4R

+

+

-

-

Vrefm2

VM+

VM-

Gain=x8

1.5V

<OUTPUT>

Vrefm2

(Vm/2)

0.2V

0.8V

0.8V

CH3IN

VM3+

OUT

VM+

VM3-

VM-

I/O terminal Equivalent circuit

(1)E1, E2 input amplifier

I/O terminal equivalent circuit

(IN1+, IN1-, OUT1, IN2+, IN2-, OUT2)

VBS1

MITSUBISHI <CONTROL / DRIVER IC>

M56788FP

5 CHANNEL ACTUATOR DRIVER

(2)E3, E4, E5 input amplifier

I/O terminal equivalent circuit

(IN3+, IN3-, OUT3, IN4+, IN4-, OUT4, IN5+, IN5-, OUT5)

VBS2

E3 amplifier
isn't include.

GND VBS1

IN*-

GND VBS1 GND VBS1

IN*+ OUT*

(3)VREF amplifier I/O terminal

equivalent circuit

(VREF, VREFO)

GND VBS1

VREF

(5)CH3IN input terminal equivalent circuit

Please refer to the application circuits.
(It shows the circuitry of the IC.)

VBS1

GND VBS1

VREFO

GND VBS2

IN*-

(3)VREG amplifier I/O terminal

equivalent circuit

(REG+, REGB)

2K

GND VBS2

REG+

(3)MUTE equivalent circuit

(MUTE1, MUTE2)

MUTE*

GND VBS1

GND VBS2 GND VBS2

IN*+ OUT*

VBS2

1.25V

9.5K

GND VBS2

REGB

GND VBS2

CH3IN

2K

23K

23K

GND

I/O terminal equivalent circuit

(7)CH1,CH2 power I/O terminal equivalent circuit

(VM1(+), VM1(-), VM2(+), VM2(-))

VBS1

Vm1

VM

GND

(8)CH3,CH4,CH5 power amplifier output terminal equivalent circuit

(VM3(+), VM3(-), VM4(+), VM4(-), VM5(+), VM5(-))

VBS2

Vm2

VM

GND

MITSUBISHI <CONTROL / DRIVER IC>

M56788FP

5 CHANNEL ACTUATOR DRIVER

The equivalent circuits of an output stage of power amplifiers are
shown in(7) and(8) .
The power supplies of CH1, CH2 are Vm1.
And the power supplies of CH3, CH4, CH5 are Vm2.
The source side of the power amplifier output stage consists of a
PNP and a NPN.
In the case of the CH1 and CH2, the emitta of the PNP is
connected to VBS1, and in the case of the CH3, CH4 and CH5, it
is connected to VBS2. So the power supplies of the PNP can be
adjusted externally.

[About bootstrap advantage]
The output stage of the power amplifier consists of the preceding
components. If VBS* is provided with higher voltage input than
Vm*(The recommendationvoltage is Vm*+1V) externally, the
output range can be wider than that of VBS*=Vm*.
Please take advantage of this bootstrap function for the system
which has many power supplies. And it is the same with the
external bootstrap circuit which provides VBS* with higher voltage
inputs than Vm*.
Also the bootstrap can decrease the saturation voltage at the
source side of the power amplifier output stage. Therefore, when
the outputs of the power amplifiers which drive motors and
actuators are fully swung, the power dissipation of the IC will be
decreased.

THERMAL DERATING

6.0
(W)

5.0

4.0

3.0

2.0

Power Dissipation (Pdp)

1.0

0 25 50 75 100 125 150

Ambient Temperature Ta(˚C)

3.6W using N-type board

2.6W using P-type board

This IC's package is POWER-SSOP, so improving the board on
which the IC is mounted enables a large power dissipation without
a heat sink.
For example, using an 1 layer glass epoxy resin board, the IC's
power dissipation is 2.6W at least. And it comes to 3.6W by using
an improved 2 layer board.
The information of the N, P type board is shown in the board
information.

(˚C)

MITSUBISHI <CONTROL / DRIVER IC>

5 CHANNEL ACTUATOR DRIVER

APPLICATION CIRCUIT No.1 single input (linear signal)•Direct voltage control

5V

5V

VBS1
VBS2

Vm2

RR

Vrefm2

Vref

VREFO

­+

M56788FP

VREFO

1.5V

VREF

VCTL1

VCTL2

3V

SS.GND

VREFO

VREFO

VBS

14K

10K

5V

R1 R2

FOCUS

R3 R4

TRACKING

MUTE1

MUTE2

Ra

Vm1

IN1+
IN1-

OUT1

VM1+

x5

VM1-

IN2+
IN2­OUT2

VM2+

x5

VM2-

REGB

REG+

RR

+-+-

+-

+-

+-+-+-+-

+-

1.25V

Vrefm1

E1

x2.5

x2.5

E2

x2.5

x2.5

Reg-amp

1–4CH5CH

SLEEP

Hi:Sleep

TSD

E3

x4

x4

E4

x4

x4

E5

x4

x4

x8

x8

x8

IN3+

IN3-

OUT3

CH3IN

VM3+

VM3-

IN4+

IN4-

OUT4

VM4+

VM4-

IN5+

IN5-

OUT5

VM5+

VM5-

VREFO

R6 R5

SPINDLE SLED ROADING

M

VREFO

R8 R7

M

VREFO

R10 R9

M

VCTL3

VCTL4

VCTL5

+

-

+-

+-

+

-

+-

+-

+

-

+-

+-

SS.GND

GND

(4PINS)

MITSUBISHI <CONTROL / DRIVER IC>

M56788FP

5 CHANNEL ACTUATOR DRIVER

APPLICATION CIRCUIT No.2 Differential PWM input • Direct voltage control (FOCUS, TRACKING, SPINDLE,
SLED, ROADING)

C1

R1

VREFO

C2

PWM1

PWM2

R1

R2

VREFO

R4

R2

R4

5V

5V

5V

C1

FOCUS

Ra

VBS1
VBS2

Vm2

Vm1

IN1+
IN1­OUT1

VM1+

x5

VM1-

IN2+
IN2­OUT2

RR

RR

+-+-

+-

+-

Vrefm2

Vrefm1

E1

x2.5

x2.5

E2

E3

VREFO

VREFO

-

Vref

+

VREF

+

-

x4

x4

+-+-

IN3+

IN3-

OUT3

CH3IN

VM3+

x8

VM3-

1.5V

PWM1

R6

C3

It can be opened at
Propagation
characteristic check.

SPINDLE SLED ROADING

M

PWM1

R5

R6

R7

PWM2

R5

C3

VREFO

PWM2

R7

R3

3V

SS.GND

PWM2

14K

10K

R3

VBS

PWM1

C2

TRACKING

MUTE1

MUTE2

VM2+

x5

VM2-

REGB

REG+

x2.5

+-+-+-+-

x2.5

+-

1.25V

1–4CH5CH

Reg-amp

SLEEP

Hi:Sleep

TSD

E4

x4

x4

E5

x4

x4

x8

x8

IN4+

IN4-

OUT4

VM4+

VM4-

IN5+

IN5-

OUT5

VM5+

VM5-

R8

R10

C4

R8

C4

VREFO

M

VREFO

C5

C5

R9

R9 R10

M

PWM1

PWM2

+

-

+-+-

+

-

+-+-

SS.GND

GND

(4PINS)