MITSUBISHI <CONTROL / DRIVER IC>
)
)
(-)
)
(-)
)
M56782FP
4 CHANNEL ACTUATOR DRIVER
DESCRIPTION
The M56782FP is a semiconductor integrated circuit in order to
drive 4ch actuator.
FEATURES
●Large power dissipation
●3.3V DSP available.
● Low saturation voltage.
(Typical 1.35V at load current 0.5A and no bootstrap condition.)
●There are two motor power supplies.
Vm1 CH1, 2 motor power supply-1
Vm2 CH3, 4 motor power supply-2
●Flexible Input amp. setting. (It enables PWM control.)
●Low cross-over distortion.
●Wide supply voltage range. (4.5V – 13.2V)
●Built-in Thermal Shut Down circuit.
●Built-in Mute circuit.
APPLICATION
MD, CD-audio, CD-ROM, VCD, DVD etc.
PIN CONFIGURATION(TOP VIEW
IN1+
VBS1
Vm1
IN1-
OUT1
VM1-
VM1+
GND
VM2+
VM2-
OUT2
IN2-
IN2+
MUTE
SS.GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
M56782FP
33
32
31
30
29
28
27
26
25
24
23
22
OUT3
IN3V
BS2
Vm2
IN3+
VM3VM3+
GND
VM4+
VM4IN4+
IN4OUT4
V
REFO
VREF
BLOCK DIAGRAM
Vm1
3
IN1+
1
4
IN1-
5
OUT1
+
7
VM1(+)
VM1(-)
VM2(+)
VM2(-)
OUT2
IN2-
IN2+
VREFO
VREF
-
-
6
+
+
15
-
-
16
+
17
18
19
23
VBS1
-
22
+
V
REF
+
-
CH1
CH2
-
+
×5
×5
E1
E2
VBS1
VBS1
VBS1
VBS1
R
R
Vrefm1
MUTE
Outline 42P9R-A
BS2
Vm2
BIAS
V
VREFO
BIAS
402
-
+
Vrefm2
VBS1
R
R
TSD
VBS2
VBS1
-
+
E3
VBS2
CH3
×8
VBS2
CH4
×8
VBS2
-
+
E4
8 to 14 29 to 35
GND (14PINS
Vm2
+
-
-
+
+
-
-
+
39
IN3-
41
38
IN3+
42
OUT3
36
VM3(+
VM3
37
28
VM4(+
VM4
27
IN4-
25
IN4+
26
24
OUT4
VBS1
+
-
Vm1
Low,Open
MUTE ON
20
21
SS.GND
)
PIN FUNCTION
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
Symbol Terminal functionTerminal Terminal
1
IN1+
2
V
BS1
3
Vm1
4
IN1-
5
OUT1
6
VM1(-)
7 36
VM1(+)
8 14
–
15
16
17
18
19
20
21
GND
VM2(+)
VM2(-)
OUT2
IN2-
IN2+
MUTE mute
SS.GND Small signal GND VREF Reference voltage input
E1 amplifier non-inverted input
Bootstrap power supply
Motor power supply
E1 amplifier inverted input
E1 amplifier output
CH1 inverted output
CH1 non-inverted output
Motor GND
CH2 non-inverted output
CH2 inverted output
E2 amplifier output
E2 amplifier inverted input
E2 amplifier non-inverted input
42
41
40
39
38
37
29 35
–
28
27
26
25
24
23
22
Symbol
OUT3
IN3V
BS2
Vm2
IN3+
VM3(-)
VM3(+)
GND
VM4(+)
VM4(-)
IN4+
IN4OUT4
E3 amplifier output
E3 amplifier inverted input
Bootstrap power supply
Motor power supply
E3 amplifier non-inverted input
CH3 inverted output
CH3 non-inverted output
Motor GND
CH4 non-inverted output
CH4 inverted output
E4 amplifier non-inverted input
E4 amplifier inverted input
E4 amplifier output
VREFO Reference voltage output
Terminal function
ABSOLUTE MAXIMUM RATING(Ta = 25°C
Symbol Conditions UnitsParameter
BS Bootstrap power supply VBS power supply 15
V
Vm
Io
1
4 18 19 20 22
Vin
Pt
Kθ
Tj
Topr
Tstg
Maximum input voltage of terminals
Power dissipation
Storage temperature
, , , , , PIN
25 26 38 41
, , , PIN
Rating
0 – VBS1
BS2
0 – V
1.2
9.6
150
-20 – +75
-40 – +150
V
VMotor power supply Vm power supply 15
mAOutput Current 500
V
V
WFree Air
mW/°CThermal derating Free Air
°CJunction temperature
°COperating temperature
°C
MITSUBISHI <CONTROL / DRIVER IC>
)
4 CHANNEL ACTUATOR DRIVER
RECOMMENDED OPERATING CONDITIONS
Symbol
Vm1, Vm2
V
BS1,VBS2
Parameter
Motor power supply
Bootstrap power supply
Min.
Limits
Typ.
5.0
Vm + 1.0
Max.
Units
V
V
ELECTRICAL CHARACTERISTICS(Ta = 25°C, VBS = Vm = 5V unless otherwise noted
Symbol Conditions UnitsParameter
CC1 Supply current - 1 VBS1, VBS2, Vm1, Vm2 current
I
V
ICC2
Vsat1
Voff1
Voff2
Voff3
Voff4
Gain1
Gain2
Gain3
Gain4
Supply current - 2
CH1 – 4 Saturation voltage
CH1 output offset voltage
CH2 output offset voltage
CH3 output offset voltage
CH4 output offset voltage
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
BS1, VBS2, Vm1, Vm2 current at Sleep Mode
(MUTE1 = MUTE2 = 0V).
Top and Bottom saturation voltage.
Load current 0.5A and no bootstrap.
V
REFO = OUT1 = 1.5V
V
REFO = OUT2 = 1.5V
V
REFO = OUT3 = 1.5V
V
REFO = OUT4 = 1.5V
{VM1(+) – VM1(-)}
(OUT1 – V
{VM2(+) – VM2(-)}
(OUT2 – VREFO)
{VM3(+) – VM3(-)}
(OUT3 – V
{VM4(+) – VM4(-)}
(OUT4 – VREFO)
REFO)
REFO)
Min. Typ. Max.
—
—
—
-41
-41
-47
-47
4.5
4.5
7.2
7.2
M56782FP
Limits
35
1.3
1.35
—
—
—
—
5
5
8
8
50
2.2
1.9
41
41
47
47
5.5
5.5
8.8
8.8
mA
mA
V
mV
mV
mV
mV
V/V
V/V
V/V
V/V
MITSUBISHI <CONTROL / DRIVER IC>
)
)
(W)
4 CHANNEL ACTUATOR DRIVER
ELECTRICAL CHARACTERISTICS(Ta = 25°C, VBS = Vm = 5V unless otherwise noted
Symbol Conditions UnitsParameter
VinE
VoutE
VofE
IinE
VinV
VofVREF
IinV
REF
Vmute-on
Vmute-off
Imute
E1, 2, 3, 4, amplifier
input voltage range
E1, 2, 3, 4, amplifier
output voltage range
E1, 2, 3, 4, amplifier offset
voltage
E1, 2, 3, 4, amplifier input
current
VREF amplifier input voltage
REF
range
VREF amplifier offset voltage
V
REF amplifier input current
Mute-on voltage
Mute-off voltage
Mute terminal input current
E1, E2 amp
E3, E4 amp
E1, E2 amp (no load)
E3, E4 amp (no load)
Vin = 1.5V (at buffer)
IN+ = IN- = 1.5V
Vin = 1.5V and ±2mA load
V
REF = 1.5V
Mute-on
Mute-off
Mute terminal input current
(at 5V input voltage)
Min. Typ. Max.
0.5
0.5
0.5
0.5
-10
-1.0
1.0
-10
-1.0
—
2.0
—
M56782FP
Limits
—
VBS1-2.0
—
V
BS2-2.0
—
V
BS1-0.5
—
VBS2-0.5
—
-0.05
—
—
-0.05
—
—
170
+10
V
BS1-2.0
+10
0.8
—
250
0
0
V
V
V
V
mV
µA
V
mV
µA
V
V
µA
THERMAL DERATING
6.0
5.0
4.0
3.0
2.0
Power Dissipation (Pdp)
1.0
0 25 50 75 100 125 150
4.0W using H-type board
3.0W using I-type board
2.7W using J-type board
Ambient Temperature Ta (°C
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 2.7W
at least. And it comes to 4.0W by using an
improved 2 layer board.
The information of the H, I, J type board is
shown in the board information.
INPUT AND OUTPUT CHARACTERISTICS OF EACH CHANNELS
(
)
(
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MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
1.5V
Reference 1.5V
1.5V
Reference 1.5V
CH1, 2
CH3, 4
VREFO
REF
V
VREFO
REF
V
OUT
OUT
ININ+
ININ+
Vm1
r
r
Vrefm1 Amp.
-
+
Vref Amp.
-
+
Input Amp.
Vm2
r
r
Vrefm2 Amp.
-
+
Vref Amp.
-
+
Input Amp.
<INPUT>
-
+
R
R
R
R
-
+
R
R
R
R
2.5R
+
-
+
-
2.5R
4R
+
-
+
-
4R
Vrefm1
VM+
2.5R
2.5R
VM-
Vrefm2
VM+
4R
4R
VM-
1.5V
<OUTPUT>
Vrefm1
Vm/2
Gain = ×5
<INPUT>
1.5V
<OUTPUT>
Vrefm2
Vm/2
0.2V
0.5V
0.5V
0.2V
0.8V
0.8V
VM+
VM+
OUT
VM-
OUT
VM-
Gain = ×8
I/O TERMINAL EQUIVALENT CIRCUIT
(
)
(
)
(1) E1, E2 input amplifier I/O terminal equivalent circuit
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
(2) E3, E4 input amplifier I/O terminal equivalent circuit
(IN1+, IN1-, OUT1, IN2+, IN2-, OUT2)
GND V
IN*-
BS1
GND V
BS1 GND VBS1
IN*+
(3) VREF amplifier I/O terminal equivalent circuit
(VREF, VREFO)
OUT*
VBS1
VBS1
GND V
IN*-
.
IN3+, IN3-, OUT3, IN4+, IN4-, OUT4
BS2
GND V
IN*+
(4) MUTE equivalent circuit
MUTE
MUTE
GND V
2K
VBS2
BS2 GND VBS2
OUT*
BS1
GND VBS1
VREF
GND VBS1
VREFO
23K
23K
GND
I/O TERMINAL EQUIVALENT CIRCUIT
(5) CH1,CH2 power amplifier output terminal
equivalent circuit
(VM1(+), VM1(-), VM2(+), VM2(-))
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
GND
(6) CH3, CH4 power amplifier output terminal
equivalent circuit
(VM3(+), VM3(-), VM4(+), VM4(-))
GND
VBS1
Vm1
VM
VBS2
Vm2
VM
The equivalent circuits of an output stage of the power amplifiers
are shown in (5) and (6).
The power supplies of CH1, CH2 are Vm1.
And the power supplies of CH3, CH4 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 and CH4, it is
connected to VBS2. So the power of the PNP supplies can be
adjusted externally.
About bootstrap advantage
The output stage of the power amplifiers consists of the preceding
components. If VBS* is provided with higher voltage input than Vm*
(The recommendation voltage 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.
MITSUBISHI <CONTROL / DRIVER IC>
(
)
4 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT NO. 1 single input (linear signal) · Direct voltage control
M56782FP
VCTL1
VCTL2
5V
VREFO
R1
VREFO
R3 R4
5V
5V
R2
FOCUS
TRACKING
Ra
VBS1
VBS2
Vm2
Vm1
IN1+
IN1-
OUT1
VM1+
×5
VM1-
IN2+
IN2-
OUT2
VM2+
×5
VM2-
RR
+
-
R
R
+
-
+
-
+
-
+
-
+
-
+
-
+
-
Vrefm2
Vrefm1
E1
×2.5
×2.5
E2
××2.5
2.5
E3
E4
VREFO
-
Vref
+
-
×4
×4
+
-
×4
×4
VREFO
+
VREF
IN3+
IN3-
OUT3
VM3+
+
-
×8
+
-
+
-
+
-
VM3-
IN4+
IN4-
OUT4
VM4+
×8
VM4-
1.5V
VREFO
R6
SLED
M
VREFO
R8 R7
TRAY
M
R5
VCTL3
VCTL4
MUTE
Low, OPEN
MUTE ON
BIAS
BIAS
TSD
SS.GND
GND
14PINS
MITSUBISHI <CONTROL / DRIVER IC>
)
(
)
M56782FP
4 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT NO. 2
Differential PWM input · Direct voltage control (FOCUS, TRACKING, SPINDLE, SLED or LOADING
C2
C1
R1
VREFO
R3
PWM2
R2
VREFO
R4
PWM2
R1
R3
PWM1
PWM1
5V
5V
5V
R2
FOCUS
R4
C2
TRACKING
C1
Ra
VBS1
VBS2
Vm2
Vm1
IN1+
IN1-
OUT1
VM1+
×5
VM1-
IN2+
IN2OUT2
VM2+
×5
VM2-
RR
+
-
R
R
+
-
+
-
+
-
+
-
+
-
+
-
+
-
Vrefm2
Vrefm1
E1
×2.5
×2.5
E2
×2.5
×2.5
E3
E4
VREFO
-
Vref
+
-
×4
×4
+
-
×4
×4
VREFO
+
VREF
IN3+
IN3-
OUT3
VM3+
+
-
×8
+
-
+
-
+
-
VM3-
IN4+
IN4-
OUT4
VM4+
×8
VM4-
1.5V
R6
C3
SLED
M
VREFO
R8 R7
TRAY
M
PWM1
R5
VCTL4
R6
PWM2
R5
C3
VREFO
MUTE
Low, OPEN
MUTE ON
BIAS
BIAS
TSD
SS.GND
GND
14PINS
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