M54679FP [RENESAS]
2-Phase Stepper Motor Driver; 两相步进电机驱动器
| 型号： | M54679FP |
| 厂家： | 
RENESAS TECHNOLOGY CORP |
| 描述： | 2-Phase Stepper Motor Driver |
| 文件： | 总13页 (文件大小：238K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M54679FP
2-Phase Stepper Motor Driver
REJ03F0047-0100Z
Rev.1.0
Sep.19.2003
Description
The M54679FP is a semiconductor integrated circuit designed for stepper motor driver used to Printer, PPC and
Facsimile.
Features
•
•
•
•
Wide supply voltage sphere (35V).
Bipolar, constant current on.
(Top side transistors Pimum current is 0.8 Amps).
Few external com
(This IC can be opesistances).
4 phases input style (iof output through current).
Output current change fu
Thermal protection circuit.
•
•
•
•
Include flywheel diodes.
Application
Printer, PPC and Facsimile.
Function
The M54679FP is a semiconductor integrated circuit whicmotor.
It can control the direction of motor current and output motor cals.
Also, it can drive the two phase bipolar stepper motor by one IC as ircuits.
Rev.1.0, Sep.19.2003, page 1 of 12
M54679FP
Pin Configuration
1
2
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
N.C
P.GND
Out1A
Out1B
N.C
N.C
3
Out2A
Out2B
Rs2
4
5
RS1
6
S1
S2
7
Vm1
Vm2
8
9
10
11
12
13
14
5
GND
GND
Ph2A
Ph2B
Fref
Regout
I0(2)
onnection
Rev.1.0, Sep.19.2003, page 2 of 12
M54679FP
Block Diagram
Out1B Vm1 Out1A
Out2A
Vm2 Out2B
Ph1A
Ph1B
Ph2A
Ph2B
Source
PWM
Source
PWM
V
CC
P.GND
P.GND
1.25V
10K
Regout
(3.5V)
Spike
current
cancel
Spike
current
cancel
R
FF1
S
Q
Q
FF2
R
S
Current
mp1
Current
comp2
18K
Vref
VTH
VTL
Frequency
Generator
I0(1)
I1(1)
I0(2)
I1(2)
VTM
Rs1
ref
GND
S2
RS2
Pin Function
Terminal
Symbol
Motor Supply Voltage
Output terminals
Current sensor
Vm1, Vm2
otor drive.
minals.
Out1A, Out1B, Out2A, O
Rs1, Rs2
sistor (Rs) connection
Power supply
VCC
Phase input
Ph1A, Ph1B, Ph2A, Ph2B
I0(1), I1(1), I0(2), I1(2)
Stby
Outrminals.
Output current change
Standby input
Output , 70%, 33%, 0%) terminals.
Standby inH or open: motor function)
terminal.
Sense inputs
Vref input
S1, S2
Vref
Input voltage termal of comparators.
Reference voltage due to setting output current.
Output of voltage stabilizer (3.5V).
Output of voltage stabilizer
A capacitor for oscillator
Power GND
Regout
Fref
A capacitor due to PWM carrier frequency.
The GND terminal of bottom side flywheel diodes.
P.GND
Rev.1.0, Sep.19.2003, page 3 of 12
M54679FP
Absolute Maximum Ratings
(Ta = 25°C unless otherwise noted.)
Parameter
Symbol
Vm
Ratings
-0.3 – 37
±0.8
Units
V
Condition
Motor supply voltage
Output current
Iout
A
Per one phase
Power supply
VCC
Vlogic
Vanalog
VRs
Pd
-0.3 – 7.0
-0.3 – VCC
-0.3 – VCC
1.5
V
Logic input voltage
Analog input voltage
Output current sensing
Power dissipation
Thermal derating
Junction temperature
Operating temperature
Storage temperature
V
Ph1A, Ph1B, Ph2A, Ph2B, I0, I1, Stby
Vref, S1, S2
V
V
Rs1, Rs2
2.7
W
Under board mount condition.
Kθ
46
°C/W
°C
°C
°C
Tj
150
Topr
Tstg
-20 – 75
-40 – 125
Thermal Derating
4.0
3.0
2.0
Using J-type board 2.7 watts
1.0
0
25
50
150
)
Ambient Temp
Recommended Operating Conditions
Limits
Min.
Parameter
Symbol
Vcc
Typ.
Max.
5.5
35
Unit
V
Power supply
4.5
10
50
5.0
Motor supply voltage
Output current
Vm
V
Iout
800
2.0
2.0
50
mA
µS
µS
µS
µS
°C
Rising time of logic inputs
Falling time of logic inputs
PWM ON time
tPLH
tPHL
Ton
5.0
5.0
PWM OFF time
Toff
50
Thermal shut down
TSDon
160
Rev.1.0, Sep.19.2003, page 4 of 12
M54679FP
Electrical characteristics
(Ta = 25°C, VCC = 5.0V, VM = 24V unless otherwise noted.)
Control Circuit
Limits
Min.
39
Parameter
Symbol
ICC1
Typ. Max.
Unit Conditions
Stby = H, Ph*A = H, Ph*B = L (Bridge ON)
Supply current
56
27
4.0
73
ICC2
20
40
mA
Stby = H, Ph*A = Ph*B (Bridge OFF)
Stby = L (Standby condition)
ICC3
2.0
2.4
0
6.0
Vcc
0.6
10
Logic input voltage
(Ph, I1, I0, Stby terminals)
Vlogic H
Vlogic L
V
Phase terminal input current I(Ph) H
I(Ph) L
µA
µA
µA
Vin = 5V
Vin = 0V
Vin = 5V
Vin = 0V
Vin = 5V
Vin = 0V
–20
–3.0
I0, I1 terminals input current
I(I0, I1) H
I(I01) L
10
10
–400 –300
Standby terminal input
current
–400 –300 5.0
Current sensing
Comparators input cu
0
–3.0
µA
S1 or S2 terminals input current
(S1 or S2 = 0V, Vref = 5V).
Current sensing
Comparators input voltag
sphere
VCH(H)
0
V
S1 or S2 terminal input voltage sphere
Vref input current
µA
Input current of Vref
(Vref = 5V, I0 = I1 = 0V)
Vref input voltage sphere
Oscillation frequency of Fref
Voltage stabilizer output
V(Vref
FC
V
z
C = 390pF, Fref terminal oscillation
Iout = -0.1mA – +1mA
Vreg
3
475
325
139
15
Current sensing
Comparators threshold
voltage
VCH(H)
VCH(M)
VCH(L)
= L, I1 = L, Vref = 5V (Vref/10*100%)
H, I1 = L, Vref = 5V (Vref/10*70%)
1 = H, Vref = 5V (Vref/10*33%)
Output Circuit
(Ta = 25°less otherwise noted.)
Limits
Parameter
Symbol Min. Typ. Max. Unit
Output saturation voltage
Output leakage current
VF of flywheel diode (Top)
Vsat
1.6
2.2
V
Toat Load current 0.6A.
Ileak
VF(H)
–100
+100 µA
1.7
1.1
0.5
2.0
2.3
1.5
2.0
3.5
V
If = 0.6A
VF of flywheel diode (Bottom) VF(L)
V
If = 0.6A
Turn ON delay of output
Turn OFF delay of output
tdon
tdoff
µS
µS
Time until output become ON since S > Vref
Time until output become OFF since S < Vref
Rev.1.0, Sep.19.2003, page 5 of 12
M54679FP
Function Explanation
1. Ph inputs make a decision the output function.
Ph*A
Ph*B
Out*A
OFF
H
Out*B
OFF
L
L
L
H
L
L
H
H
L
H
H
OFF
OFF
* : 1 or 2
The outputs shut off under Ph*A and Ph*B High condition at the same time.
2. Output current and terminal of output current setting.
I0
I1
Output current ratio
Current sensing comparators
threshold voltage (Vref=5V)
L
L
100%
0%
500mV
350mV
155mV
H
L
L
H
H
3. Equivalent circuit of V
The equivalent circuit of Vref tt.
As Vref terminal needs typical 500µvalue when Vref voltage is set.
4. Current sensing comparators.
The current sensing comparators compare the g resistor and threshold voltage (VCH) of
this comparators, then if VRs > VCH, the comparathe output.
Vref
18k
3.5k
2k
I
Rev.1.0, Sep.19.2003, page 6 of 12
M54679FP
5. Oscillation circuit.
External capacitor is charged and discharged by the constant current and a triangular waveform appears to Vref
terminal.
The waveform voltage level is shown in right figure.
This triangular waveform is a carrier frequency of PWM circuit.
The carrier frequency change if this external capacitor value is changed.
M54679FP is designed that the oscillation frequency is 30kHz
if the external capacitor value is 390pF.
The oscillation frequency is in inverse proportion to the value of a external capacitor.
2.5V
0.5V
6. Spike current can
Output power transistorent appears on the RS (current sensing) in a short time and this is
caused by the internal dela
M54679FP has the cancellation he current sensing comparators do not cause error
functions.
So, the function of current sensing coms since the output power transistors go to ON.
7. Ph signal delay circuit.
M54679FP has a delay time of 3.0µs until output N since Ph signal change Low to high.
This delay time is enough short time for the frequency ere is no problem in the normal
function.
8. Rs and S1 or S2 terminal.
If S1 or S2 terminal (non-inverted input of the current sensing comst position of current
sensing resistor, the error of the current sensing by means of wire resisecreased.
9. Voltage stabilizer.
M54679FP has a voltage stabilizer of 3.5V.
The reference voltage (Vref) can connect the output (Regout)
of voltage stabilizer directly.
In this case, the current capability of the output of voltage stabilizer is 1.0mA (source current), 0.1mA (sink current).
10. Setting output current.
As the output circuit of M54679FP is designed by the bipolar type NPN transistors, the current that go through the
motor coil is smaller about 15mA (typical) than the current that go through the current sensing resistor.
This is caused by the base current of the power transistors.
Therefore, be aware this base current when the output current is set.
Rev.1.0, Sep.19.2003, page 7 of 12
M54679FP
11. Power GND terminal.
Power GND is connected the anodes of flywheel diodes of bottom side.
When the output H-bridge power stage goes to ON, as the flyback current go through this GND terminal, minimize the
wire resistor of this GND on the board.
VM
ON
V
CC
OFF
Iout
MB
MA
ON
OFF
Ib = 15mA (Typ.)
Iout = IRS - Ib
RS
Rev.1.0, Sep.19.2003, page 8 of 12
M54679FP
12. Output current timing chart under Ph inputs and I0, I1 output conditions.
Under output current wave forms show the current that a motor driver is going to control, so these do not show the
actual current wave forms.
Torque vector
B
<4 steps function>
(1)
(2)
(3)
(4)
AB
AB
100%
Ph1A
Ph1B
Ph2A
Ph2B
(2)
(1)
(4)
L
I0(1),I0(2)
L
I1(1),I1(2)
A
0%
A
100%
Output current 1
(Current of Phase 1)
(3)
A
B
100%
100%
Output current 2
(Current of Phase 2)
100%
B
AB
BA
B
<8 steps function>
B
1
7
8
AB
AB
Ph1A
Ph1B
Ph2A
100%
70%
Ph2B
I0(1),I0(2)
2
1
7
3
I1(1),I1(2)
4
8
A
0%
A
Output current 1
(Current of Phase 1)
A
5
6
Output current 2
(Current of Phase 2)
BA
AB
A
B
<16 steps function>
B
3
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 1
Ph1A
Ph1B
Ph2A
70
4
2
Ph2B
I0(1)
5
1
I1(1)
I0(2)
31%
0%
6
16
15
14
7
I1(2)
A
8
A
9
13
Output current 1
(Current of Phase 1)
10
12
11
B
A
B
Output current 2
(Current of Phase 2)
AB
BA
B
Rev.1.0, Sep.19.2003, page 9 of 12
M54679FP
13. Inputs terminals.
Symbol
Equivalent circuit of the circumstance of input terminals.
Remarks
V
CC
18
pin: Stby
20
pin: I0(1)
21
pin: I1(1)
23
pin: I0(2)
1K
22
pin: I1(2)
V
CC
16
pin: Ph1A
17
pin: Ph1B
27
pin: Ph2A
26
pin: Ph2B
V
CC
6
pin: S1
37
pin: S2
V
CC
19
pin: Vref
I0(1)
I1(1)
I0(2)
I1(2)
Rev.1.0, Sep.19.2003, page 10 of 12
M54679FP
Symbol
Equivalent circuit of the circumstance of input terminals.
Remarks
V
CC
Fref
Fref
Application Circuit
STEPPER MOTOR
M
N.C
42
41
40
39
0.5 – 1.0Ω
0.5 – 1.0Ω
Rrs1
Rrs2
6
7
Vm
8
28
27
26
25
24
23
22
9
10
11
12
13
14
15
16
17
18
19
20
21
GND
V
CC
input
input
input
V
CC
Ph1A
Ph1B
Stby
Vref
Ph2A
Ph2B
Fref
input
input
390pF
Regout
I0(2)
input
input
input
input
I0(1)
I1(1)
I1(2)
Rev.1.0, Sep.19.2003, page 11 of 12
M54679FP
Package Dimensions
2 l
1 e
L
1 L
E
E H
Rev.1.0, Sep.19.2003, page 12 of 12
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