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PDF M54670P Data sheet ( Hoja de datos )

Número de pieza M54670P
Descripción 2-PHASE STEPPER MOTOR DRIVER
Fabricantes Mitsubishi 
Logotipo Mitsubishi Logotipo



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No Preview Available ! M54670P Hoja de datos, Descripción, Manual

MITSUBISHI <CONTROL / DRIVER IC>
M54670P
2-PHASE STEPPER MOTOR DRIVER
DESCRIPTION
The M54670P is a semiconductor IC to drive a bipolar stepper
motor directly by controlling the coil current with the constant
current method.
FEATURES
q Wide operating voltage range (10 – 35V)
q Wide output current control range (20 – 800mA)
q Bipolar and constant current drive
q Built in flywheel
q Current level can be changed by steps or continuously.
q Built in a thermal shutdown circuit
APPLICATION
Office automation equipment such as printer, FDD, HDD, and FAX
FUNCTION
The M54670P 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 3 and 30).
The coil current value can be selected among four levels (0 to
max.) by selecting the combination of three internal comparators by
logic input (pins 14, 15, 18 and 19). It also can be continuously
controlled with VR pins (pins 2 and 31). By selecting an I input pin
among pins 14, 15, 18 or 19, the operation timing, 2-phase
excitation, 1-2-phase excitation or microstep, can be selected.
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)
Triangular wave
CT 1
Comparator
reference input(A) VR(A) 2
Output current
direction switching(A)
Ph(A)
3
Output power
supply(A)
VMM1(A)
4
Output(A) O1(A) 5
6
7
GND 8
9
10
Current sensor(A) E(A) 11
Output(A) O2(A) 12
Output power
supply(A) VMM2(A) 13
Output current
value setting(A)
Output current
value setting(A)
I0(A) 14
I1(A) 15
Comparator
input(A)
C(A) 16
32 VCC Circuit power supply
Comparator
31 VR(B) reference input(B)
30
Ph(B)
Output current
direction switching(B)
29
VMM1(B)
Output power
supply(B)
28 O1(B) Output(B)
27
26
25 GND
24
23
22 E(B) Current sensor(B)
21 O2(B) Output(B)
Output power
20 VMM2(B) supply(B)
19 I0(B)
18 I1(B)
Output current
value setting(B)
Output current
value setting(B)
17 C(B)
Comparator
input(B)
Outline 32P4B
BLOCK DIAGRAM
2 32 3
4 5 12 13
29 28
21 20
30
31
Output current value
setting(A)
I0(A) 14
Output current value 15
setting(A)
I1(A)
00 10 01 11
TSD
11 01 10 00
Output current value
setting(B)
19 I0(B)
18 Output current value
setting(B)
I1(B)
6
GND
10
Power supply sensor
Triangular
wave
16
C(A)
Comparator input(A)
1
CT
Triangular wave
11 22
E(A)
E(B)
Current sensor(B)
Current sensor(A)
Power supply sensor
23
GND
27
17
C(B)
Comparator input(B)

1 page




M54670P pdf
APPLICATION EXAMPLE (Stepping motor driver)
MITSUBISHI <CONTROL / DRIVER IC>
M54670P
2-PHASE STEPPER MOTOR DRIVER
VR
Phase A
IN(A)
Cf
RS
RC
CC
1 CT
2 VR(A)
3 Ph(A)
4 VMM1(A)
5 O1(A)
6
7
8 GND
9
10
11 E(A)
12 O2(A)
13 VMM2(A)
14 I0(A)
15 I1(A)
16 C(A)
VCC 32
VR(B) 31
Ph(B) 30
VMM1(B) 29
O1(B) 28
27
26
GND
25
24
23
E(B) 22
O2(B) 21
VMM2(B) 20
I0(B) 19
I1(B) 18
C(B) 17
0.01
µF
RS
RC
CC
VCC
Phase B
VMM
40µF/50V
IN(B)
Stepper motor
(3.7mH / 6/ phase)
Cf = 3900pF
RS = 0.51
RC = 1k
CC = 820pF

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