Output saturation voltage and Load current characteristic.
This data is an example for typical sample.
BOOTSTRAP
The equivalent circuits of an output stage of the power amplifier
are shown in (7) .
The power supplies of CH1,CH2 are Vm1.
The power supply of CH3 is Vm3, and the power supply of CH4 is
Vm2.
The source side of the power amplifier output stage consists of a
PNP and a NPN. The emitta of the PNP is connected to VCC2. 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 VCC2 is provided with higher voltage input than
Vm* (The recommendation voltage is Vm*+1V) externally, the
output range can be wider than that of VCC2=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 VCC2 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.
CH1
5.0
4.0
3.0
2.0
Output Voltage (V)
1.0
0
CH3
5.0
4.0
3.0
2.0
Output Voltage (V)
1.0
0
Vm1=VCC1=5v,VCC2=12v
0.3v
0.5v
0.20.4 0.5
Load Current (mA)
Vm3=VCC1=5v,VCC2=12v
0.22v
0.24v
0.20.4 0.5 0.60.81.0
Load Current (mA)
VM3+,VM3-
VM1+,VM1-
0.35v
0.60.81.0
VM3+,VM3-
VM1+
VM1-
0.46v
0.5v
CH2
5.0
4.0
3.0
2.0
Output Voltage (V)
1.0
0
CH4
5.0
4.0
3.0
2.0
Output Voltage (V)
1.0
0
Vm1=VCC1=5v,VCC2=12v
0.3v
0.5v
0.20.4 0.5 0.60.81.0
Load Current (mA)
Vm2=VCC1=5v,VCC2=12v
0.3v
0.3v
0.20.4 0.5 0.60.81.0
Load Current (mA)
VM2+,VM2-
0.3v
VM4+,VM4-
VM4+,VM4-
VM2+
VM2-
0.6v
0.6v
Page 9
NON-BOOTSTRAP
MITSUBISHI <CONTROL / DRIVER IC>
M56789FP
4 CHANNEL ACTUATOR DRIVER
CH1
5.0
4.0
3.0
2.0
Output Voltage (V)
1.0
0
5.0
4.0
3.0
2.0
Output Voltage (V)
1.0
Vm1=VCC1=VCC2=5v
VM1+,VM1-
1.0v
0.5v
0.20.4 0.5 0.60.81.0
Load Current (mA)
CH3
1.0v
0.24v
0.35v
Vm3=VCC1=VCC2=5v
VM4+,VM4-
VM3+,VM3-
VM1+
VM1-
0.5v
CH2
5.0
4.0
3.0
2.0
Output Voltage (V)
1.0
0
CH4
5.0
4.0
3.0
2.0
Output Voltage (V)
1.0
Vm1=VCC1=VCC2=5v
VM2+,VM2-
1.0v
0.5v
0.20.4 0.5 0.60.81.0
Load Current (mA)
Vm2=VCC1=VCC2=5v
1.0v
0.3v
0.3v
VM4+,VM4-
VM4+,VM4-
VM2+
VM2-
0.6v
0
0.20.4 0.5 0.60.81.0
Load Current (mA)
THERMAL DERATING
6.0
(W)
5.0
4.0
3.0
2.0
Power Dissipation (Pdp)
1.0
0255075100125150
Ambient Temperature Ta (˚C)
3.6W using N-type board
2.6W using P-type board
0
0.20.4 0.5 0.60.81.0
Load Current (mA)
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.
Page 10
APPLICATION CIRCUIT No.1
* single input (linear signal)
* Direct voltage control
MITSUBISHI <CONTROL / DRIVER IC>
M56789FP
4 CHANNEL ACTUATOR DRIVER
VCTL1
cf.R1=10K,R2=14K
Voltage gain=GainCH1•R2/R1
if.Ra=10
Current gain=7/10=0.7(A/V)
=5•14/10
=7(V/V)=16.9dB
R2R1
FOCUSTRACKING
5V
VREFO
VCTL2
VREFO
Ra
MUTE2
MUTE1
SIN1-SOUT1
IN1+IN2+
IN1-
OUT1
VM1+VM1-
GND
VM2+VM2-
OUT2
IN2-
SIN2-
SOUT2
5K
10K
10K
5K
5K
10K
5K
OP1+
OP1-
12.5K
Vm1
VCC1
12.5K5K10K
ch4
ch1,
ch2, ch3
10K
+-
10K
+-
+-
+-
+-
-
+
-
+
10K
+
-
10K
+
-
5K
5K
12.5K
5K
12.5K
5K
5K
OP1OUT
TSD
OP2OUT
+-
4K
+
-
+-
12.5K2.5K
+
12.5K2.5K
12.5K2.5K
+-
12.5K2.5K
12.5K2.5K
+
-
12.5K2.5K
12.5K2.5K
+-
12.5K2.5K
-
+
-
+
+
-
VREF0
2.5V
VREF
10K10K
Vm2
5V
IN4B-
IN4A-
25K
VM4+ VM4-
M
VCC2
12V
VM3- VM3+
M
OUT3
IN3-
VREFO
Vm3IN3+
5V
10K10K
OP2+
OP2-
VCTL4
TRAY
TRAVERSE
VCTL3
Page 11
APPLICATION CIRCUIT No.2
* single input (linear signal)
* Direct current control (for FOCUS and TRACKING)
MITSUBISHI <CONTROL / DRIVER IC>
M56789FP
4 CHANNEL ACTUATOR DRIVER
cf.R1=10K,R2=14K,Rs=1
Current gain=R2 / [R1•GainS1•Rs]
R1
=14 / [10•2•1]
=0.7(A/V)
*Phase compensation filter
VCTL2
VCTL1
FOCUSTRACKING
R2
5V
VREFO
Rs
Ra
VREFO
MUTE2
MUTE1
SIN1-SOUT1
IN1+IN2+
IN1-
OUT1
VM1+VM1-
GND
VM2+VM2-
OUT2
IN2-
SIN2-
SOUT2
5K
5K
5K
10K
10K
10K
5K
OP1+
OP1-
Vm1
VCC1
12.5K5K10K
12.5K
ch4
ch1,
ch2, ch3
10K
+-
10K
+-
+-
+
+-
+
-
+
10K
+
-
10K
+
-
S1
E1
5K
5K
12.5K
5K
12.5K
5K
5K
OP1OUT
TSD
OP2OUT
+-
4K
+
-
+-
12.5K2.5K
-
+
12.5K2.5K
12.5K2.5K
+
12.5K2.5K
12.5K2.5K
+
-
12.5K2.5K
12.5K2.5K
+-
12.5K2.5K
+
+
+
-
VREF0
2.5V
VREF
10K10K
Vm2
5V
IN4B-
IN4A-
25K
VM4+ VM4-
M
VCC2
12V
VM3- VM3+
M
OUT3
IN3-
VREFO
Vm3IN3+
5V
10K10K
OP2+
OP2-
VCTL4
TRAY
TRAVERSE
VCTL3
Page 12
APPLICATION CIRCUIT No.3
* Differential PWM input (for FOCUS,TRACKING and TRAVERSE)
* Direct voltage control
MITSUBISHI <CONTROL / DRIVER IC>
M56789FP
4 CHANNEL ACTUATOR DRIVER
C2
C1
PWM2
VREFO
VREFO
R3
PWM2
R2
R4
R1R1
R3
PWM1
PWM1
R2
C1
FOCUSTRACKING
5V
C2
R4
MUTE2
MUTE1
SIN1-SOUT1
IN1+
IN1-
OUT1
VM1+VM1-
GND
VM2+VM2-
OUT2
IN2-
IN2+
SIN2-
SOUT2
5K
10K
10K
5K
5K
10K
5K
OP1+
OP1-
12.5K
Vm1
VCC1
12.5K5K10K
ch4
ch1,
ch2, ch3
10K
+-
10K
+-
+-
+-
+-
+
+
10K
+
-
10K
+
-
5K
5K
12.5K
5K
12.5K
5K
5K
OP1OUT
TSD
OP2OUT
+-
+
-
+-
4K
12.5K2.5K
++
12.5K2.5K
12.5K2.5K
-
12.5K2.5K
12.5K2.5K
+
-
12.5K2.5K
12.5K2.5K
+-
12.5K2.5K
+
+
+
-
10K10K
10K10K
VREF
25K
VM4+ VM4-
VCC2
VM3- VM3+
OUT3
IN3-
Vm3IN3+
OP2+ OP2-
VREF0
Vm2
IN4B-
IN4A-
5V
2.5V
5V
M
12V
M
VCTL4
TRAY
TRAVERSE
C3
R6
R5
PWM1
R6
R5
VREFO
C3
PWM2
Page 13
APPLICATION CIRCUIT No.4
* Differential PWM input (for FOCUS,TRACKING and TRAVERSE)
* Direct current control (for FOCUS and TRACKING)
PWM1
R3
R1
PWM2
R3
R1
C2
C2
R2
VREFO
C1
R2
C1
FOCUSTRACKING
VREFO
R4
R4
5V
MUTE2
MUTE1
SIN1-SOUT1
IN1+IN2+
IN1-
OUT1
VM1+VM1-
GND
VM2+VM2-
OUT2
IN2-
SIN2-
SOUT2
5K
5K
5K
10K
10K
10K
5K
OP1+
OP1-
Vm1
VCC1
12.5K
12.5K5K10K
PA
ch4
ch1,
ch2, ch3
10K
+-
10K
+-
+-
+-
+-
+
-
+
10K
+
-
10K
+
-
5K
5K
12.5K
5K
12.5K
5K
5K
OP1OUT
MITSUBISHI <CONTROL / DRIVER IC>
M56789FP
4 CHANNEL ACTUATOR DRIVER
VREF0
OP1
TSD
OP2OUT
+-
4K
+
-
+-
12.5K2.5K
-
+
12.5K2.5K
12.5K2.5K
+
12.5K2.5K
12.5K2.5K
+
-
12.5K2.5K
12.5K2.5K
+-
12.5K2.5K
+
+
+
-
10K10K
25K
10K10K
2.5V
VREF
Vm2
5V
IN4B-
IN4A-
VM4+ VM4-
M
VCC2
12V
VM3- VM3+
M
OUT3
IN3-
Vm3IN3+
5V
OP2+ OP2-
VCTL4
TRAY
TRAVERSE
C3
R6
R5
PWM1
VREFO
R6
R5
PWM2
C3
PWM2
PWM1
Page 14
APPLICATION CIRCUIT No.5 (for 3.3V DSP)
* single input (linear signal)
* Direct voltage control
MITSUBISHI <CONTROL / DRIVER IC>
M56789FP
4 CHANNEL ACTUATOR DRIVER
R3
REF
R1R1
R2
VREFO
VREFO
R4
REF
R3
VCTL1
VCTL2
R2
FOCUSTRACKING
5V
R4
MUTE2
MUTE1
5K
SIN1-SOUT1
IN1+IN2+
IN1-
OUT1
VM1+VM1-
GND
VM2+VM2-
OUT2
IN2-
SIN2-
SOUT2
5K
5K
10K
10K
10K
5K
OP1+
OP1-
12.5K
Vm1
VCC1
12.5K5K10K
ch4
ch1,
ch2, ch3
10K
+-
10K
+-
+-
+
+-
+
+
10K
+
-
10K
+
-
5K
5K
12.5K
5K
12.5K
5K
5K
OP1OUT
TSD
OP2OUT
+-
+-
4K
12.5K2.5K
++
12.5K2.5K
12.5K2.5K
-
12.5K2.5K
12.5K2.5K
+
-
12.5K2.5K
12.5K2.5K
+-
12.5K2.5K
+
-
+
-
+
+
10K10K
10K10K
VREF0
VREF
Vm2
IN4B-
IN4A-
25K
VM4+ VM4-
VCC2
VM3- VM3+
OUT3
IN3-
Vm3IN3+
OP2+ OP2-
5V
M
12V
M
5V
VREFO
10K10K
VCTL4
TRAY
TRAVERSE
R6
R5
VCTL3
MCU
power
supply
5v
VREFO
R6
R5
REF
Page 15
APPLICATION CIRCUIT No.6 (for 3.3V DSP)
* single input (linear signal)
* Direct current control (for FOCUS and TRACKING)
Vref
1.65V
R1
R3
R3
VCTL1
R1
R2
VREFO
R2
FOCUSTRACKING
VREFO
R4
R4
5V
MUTE2
MUTE1
SIN1-SOUT1
IN1+IN2+
IN1-
OUT1
VM1+VM1-
GND
VM2+VM2-
OUT2
IN2-
SIN2-
SOUT2
5K
5K
5K
10K
10K
10K
5K
OP1+
OP1-
Vm1
VCC1
12.5K
12.5K5K10K
PA
ch4
ch1,
ch2, ch3
10K
+-
10K
+-
+-
+-
+-
+
-
+
10K
+
-
10K
+
-
5K
5K
12.5K
5K
12.5K
5K
5K
OP1OUT
MITSUBISHI <CONTROL / DRIVER IC>
M56789FP
4 CHANNEL ACTUATOR DRIVER
OP1
TSD
OP2OUT
+-
4K
+
-
+-
12.5K2.5K
-
+
12.5K2.5K
12.5K2.5K
+
12.5K2.5K
12.5K2.5K
+
-
12.5K2.5K
12.5K2.5K
+-
12.5K2.5K
+
+
+
-
10K10K
10K10K
VREF0
25K
VM4+ VM4-
OP2+ OP2-
VREF
Vm2
IN4B-
IN4A-
VCC2
VM3- VM3+
OUT3
IN3-
Vm3IN3+
5V
M
12V
M
5V
VREFO
10K10K
VCTL4
TRAY
TRAVERSE
R6
R5
VCTL3
MCU
power
supply
5v
VREFO
R6
R5
Vref
1.65v
Vref
1.65v
VCTL2
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