Mitsubishi M54672SP Datasheet
MITSUBISHI <CONTROL / DRIVER IC>
)
)
)
M54672SP
2-PHASE STEPPER MOTOR DRIVER
DESCRIPTION
The M54672SP is a semiconductor IC to drive a stepper motor
directly by controlling the coil current with the constant current
method.
FEATURES
● Wide output current control range (20 – 1200mA)
●Bipolar and constant current drive
●Built in a thermal shutdown circuit
●Built in flywheel diodes
APPLICATION
Office automation equipment such as printer, FDD, HDD and FAX
FUNCTION
The M54672SP can drive a stepper motor by the 2-phase bipolar
method and also control the coil current. Furthermore, it controls
the direction of the coil current with Ph input pins (pins 16 and 17)
and the coil current value with VR pins (pins 3 and 30).
Because two control circuits are built in this IC, a stepper motor
can be driven with a single IC by the 2-phase bipolar method.
PIN CONFIGURATION(TOP VIEW
Standby input (1
Comparator input (1)
Comparator
reference input (1)
Bootstrap power
supply (1)
Output power
supply (1)
Output (1)
Current sensor (1)
Output (1)
Output power supply (1)
Bootstrap power
supply (1)
Power supply (1)
One-shot-multi time
Output current direction
constan
switching (1)
t (1)
GND
St1
C1
V
Vbs1
VMM1
M
M
VMM1
bs1
V
Vcc1
Ph1
R1
A1
E1
B1
T1
1
2
3
4
32
31
30
29
285
6
7
8
27
M54672SP
26
25
249
10
23
2211
12
13
14
21
20
19
15 18
16
17
Outline 32P4B
Standby input (2
St2
Comparator input (2)
C2
Comparator reference
V
R2
input (2)
Bootstrap power
Vbs2
supply (2)
Output power
VMM2
supply (2)
Output (2)
M
A2
Current sensor (2)
E2
GND
Output (2)
B2
M
Output power supply (2)
VMM2
Bootstrap power
bs2
V
supply (2)
Vcc2
Power supply (2)
One-shot-multi time
T2
constant (2)
Output current direction
Ph2
switching (2)
BLOCK DIAGRAM
h2
St2
32 30
19
VCC2 Power supply(2)
Standby input(2)
Output current
Comparator reference input(2)
P
VR2
17
Voltage sensor Monostable
direction switching(2)
V
Bootstrap power supply(2)
29 28 27 22 21 20
V
Output power supply(2)
Output(2)
M
A2
MM2
bs2
Standby circuit
comparator
MB2
Output(2)
MM2
V
Output power supply(2)
bs2
Bootstrap power supply(2)
V
h1
R1
Comparator reference input(1)
V
Output current
P
Standby input(1)
St1
1 3 16 4 5
bs1
direction switching(1)
V
Bootstrap power supply(1)
Voltage sensor Monostable
Standby circuit
comparator
MM1
V
Output power supply(1)
A1
Output(1)
MB1
M
6
11 12 13
MM1
Output(1)
V
bs1
Output power supply(1)
V
Bootstrap power supply(1)
14
VCC1 Power supply(1)
25
GND
C2
31
23
24
Comparator input(2)
18
T2
26
E2
Current sensor(2)
One-shot-multi time constant(2)
9
8 10 15
GND
2
C1
Comparator input(1)
One-shot-multi time constant(1)
T1
Current sensor(1)
7
E1
MITSUBISHI <CONTROL / DRIVER IC>
2-PHASE STEPPER MOTOR DRIVER
ABSOLUTE MAXIMUM RATINGS (Ta=25˚C, unless otherwise noted)
Symbol Ratings UnitParameter Conditions
M54672SP
VCC
VMM
Vbs
VL
VC
VR
IL
IC
IMM
Pd
Topr
Tstg
Supply voltage -0.3 – 7
Output supply voltage
Bootstrap supply voltage
Logic input voltage
Analog input voltage
Comparative input voltage
Logic input current
Analog input current
Output supply current
Allowable loss
Operating temperature
Storage temperature
RECOMMENDED OPERATING CONDITIONS (Ta=25˚C, unless otherwise noted)
Symbol
VCC
VMM
Vbs
IO
tPLH
tPHL
TON
Supply voltage
Output supply voltage
Bootstrap supply voltage
Output current
Logic input rise time
Logic input fall time
Thermal shutdown temperature
Limits
Min. Typ. Max.
4.5
10
V
bs ≥ VMM+1V
20
5
12
800
5.5
20
24
1200
160
UnitParameter
V
V
V
mA
2
µs
2
µs
°C
-0.3 – 24
-0.3 – 27
-0.3 – 6
-0.3 – V
-0.3 – 15
-10
-10
±1500
1.70
-20 – 75
-55 – 125
CC
V
V
V
V
V
V
mA
mA
mA
W
°C
°C
ELECTRICAL CHARACTERISTICS (Ta=25˚C, unless otherwise noted)
Symbol Test conditions
VIH “H”
VIL
VCH
ICO
IOFF
Vsat
tOFF
td
ICC
IH
I
IIL
Logic input voltage
Comparator threshold
Comparator input current
Output cutoff current
Saturation voltage
Cutoff time
Turn-off delay
Supply current
Logic input current
Parameter
VCC=5V
“L”
V
R=5V
Voltage at sensing resistor is not included.
V
bs=12.7V, VMM=12V, IO=800mA
MM=12V, tON ≥ 5µs
V
dVK/dt ≥ 50mV/µs
V
CC=5V, 1phase
V
I=2.4V
“H”
V
I=0.4V
“L”
Limits
Min. Typ. Max.
CC
2.0
0
420
-20
450 480
V
0.8
20
100
1.0
5
1.6
1.5 V
10 15
2.0
25
100
-0.4
Unit
V
V
mV
µA
µA
µs
µs
mA
µA
mA
Loading...