Ordering number : EN*6183
LB11847
Monolithic Digital IC
LB11847
PWM Current Control Type Stepping Motor Driver
Preliminary
Package Dimensions
[LB11847]
28
12.7
11.2
15
0.4
R1.7
1
14
20.0
4.0
27.0
4.0
The LB11847 is a driver IC for stepping motors
with PWM current control bipolar drive (fixed OFF
time). A special feature of this IC is that VREF
voltage is constant while the current can be set in
15 steps, allowing drive of motors ranging from 12 phase exciter types to 4W 1-2 phase exciter
types. The current decay pattern can also be
selected (SLOW DECAY, FAST DECAY, MIX
DECAY) to increase the decay of regenerative
current at chopping OFF, thereby improving
response characteristics. This is especially useful
for carriage and paper feed stepping motors in
printers and similar applications where highprecision control and low vibrations are required.
unit: mm
3147B-DIP28H
8.4
Overview
1.93
1.78
0.6
1.0
SANYO : DIP28H
Features
•
•
•
•
•
•
•
PWM current control (fixed OFF time)
Load current digital selector (1-2, W1-2, 2W1-2, 4W1-2 phase exciter drive possible)
Selectable current decay pattern (SLOW DECAY, FAST DECAY, MIX DECAY)
Simultaneous ON prevention function (feedthrough current prevention)
Noise canceler
Built-in thermal shutdown circuit
Built-in logic low-voltage OFF circuit
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
61199RM(KI) No. 6183-1/16
LB11847
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Motor supply voltage
VBB
Output peak current
IOPEAK
Output continuous current
IO max
Logic supply voltage
VCC
Logic input voltage range
VIN
Emitter output voltage
Conditions
Ratings
tW ≤ 20 µs
50
V
1.75
A
1.5
A
7.0
–0.3 to VCC
VE
Allowable power dissipation
Unit
Pd max
Ta = 25°C
With heat sink
V
V
1.0
V
3.0
W
20
W
Operating temperature
Topr
–20 to +85
°C
Storage temperature
Tstg
–55 to +150
°C
Allowable Operating Ranges at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Motor supply voltage range
VBB
10 to 45
V
Logic supply voltage range
VCC
4.75 to 5.25
V
Reference voltage range
VREF
0.0 to 3.0
V
Pd max – Ta
Allowable power dissipation, Pd max – W
25
With an arbitrary large heat sink
20.0
20
15
10.4
10
5
IC only
3.0
1.56
0
–20
0
20
40
60
80
100
Ambient temperature, Ta – ˚C
No. 6183-2/16
LB11847
Electrical Characteristics at Ta = 25°C, VBB = 45V, VCC = 5V, VREF = 1.52V
Parameter
Ratings
Conditions
Symbol
min
typ
Unit
max
[Output Block]
Output stage supply voltage
Output saturation voltage
Output leak current
Output sustain voltage
IBB ON
2.3
IBB OFF
0.5
3.5
5.0
mA
0.8
1.1
mA
IO = +1.0A, sink
1.2
1.6
V
VO(sat)2
IO = +1.5A, sink
1.5
1.9
V
VO(sat)3
IO = –1.0A, source
1.9
2.2
V
VO(sat)4
IO = –1.5A, source
2.2
2.4
V
IO(leak)1
VO = VBB, sink
IO(leak)2
VO = 0V, source
VO(sat)1
VSUS
L = 15 mH, IO = 1.5A, Guaranteed design value
50
µA
–50
µA
45
V
[Logic Block]
Logic supply voltage
Input voltage
ICC ON
I4 = 2.0V, I3 = 2.0V, I2 = 2.0V, I1 = 2.0V
19.5
26
36.5
mA
ICC OFF
ENABLE = 2.0V
10.5
15
19.5
mA
2.0
VIH
V
VIL
Input current
Sensing voltage
Reference current
IIH
VIH = 2.0V
IIL
VIL = 0.8V
VE
0.8
V
100
µA
µA
–10
I4 = 2.0V, I3 = 2.0V, I2 = 2.0V, I1 = 2.0V
0.470
0.50
0.525
V
I4 = 2.0V, I3 = 2.0V, I2 = 2.0V, I1 = 0.8V
0.445
0.48
0.505
V
I4 = 2.0V, I3 = 2.0V, I2 = 0.8V, I1 = 2.0V
0.425
0.46
0.485
V
I4 = 2.0V, I3 = 2.0V, I2 = 0.8V, I1 = 0.8V
0.410
0.43
0.465
V
I4 = 2.0V, I3 = 0.8V, I2 = 2.0V, I1 = 2.0V
0.385
0.41
0.435
V
I4 = 2.0V, I3 = 0.8V, I2 = 2.0V, I1 = 0.8V
0.365
0.39
0.415
V
I4 = 2.0V, I3 = 0.8V, I2 = 0.8V, I1 = 2.0V
0.345
0.37
0.385
V
I4 = 2.0V, I3 = 0.8V, I2 = 0.8V, I1 = 0.8V
0.325
0.35
0.365
V
I4 = 0.8V, I3 = 2.0V, I2 = 2.0V, I1 = 2.0V
0.280
0.30
0.3
0.325
V
I4 = 0.8V, I3 = 2.0V, I2 = 2.0V, I1 = 0.8V
0.240
0.26
0.285
V
I4 = 0.8V, I3 = 2.0V, I2 = 0.8V, I1 = 2.0V
0.195
0.22
0.235
V
I4 = 0.8V, I3 = 2.0V, I2 = 0.8V, I1 = 0.8V
0.155
0.17
0.190
0.190
V
I4 = 0.8V, I3 = 0.8V, I2 = 2.0V, I1 = 2.0V
0.115
0.13
0.145
V
I4 = 0.8V, I3 = 0.8V, I2 = 2.0V, I1 = 0.8V
0.075
0.09
0.100
V
µA
IREF
VREF = 1.5V
–0.5
CR pin current
ICR
CR = 1.0V
–4.6
MD pin current
IMD
MD = 1.0V, CR = 4.0V
–5.0
µA
–10
µA
DECAY pin current Low
IDECL
VDEC = 0.8V
DECAY pin current High
IDECH
VDEC = 2.0V
Thermal shutdown temperature
–1.0
5
TSD
LVSD1
Logic OFF voltage
LVSD2
3.35
3.20
LVSD hysteresis width
∆LVSD
0.065
3.65
µA
°C
170
Logic ON voltage
mA
3.95
V
3.50
3.80
V
0.15
0.23
V
No. 6183-3/16
LB11847
Truth Table
PHASE
ENABLE
OUTA
H
L
H
L
L
L
L
H
H
OFF
OFF
OUTA
Set Current Truth Table
Set current IOUT
Current ratio (%)
IA4
IA3
IA2
IA1
1
1
1
1
11.5/11.5 × VREF/3.04RE = IOUT
100
1
1
1
0
11.0/11.5 × VREF/3.04RE = IOUT
95.65
1
1
0
1
10.5/11.5 × VREF/3.04RE = IOUT
91.30
1
1
0
0
10.0/11.5 × VREF/3.04RE = IOUT
86.95
1
0
1
1
9.5/11.5 × VREF/3.04RE = IOUT
82.61
1
0
1
0
9.0/11.5 × VREF/3.04RE = IOUT
78.26
1
0
0
1
8.5/11.5 × VREF/3.04RE = IOUT
73.91
1
0
0
0
8.0/11.5 × VREF/3.04RE = IOUT
69.56
0
1
1
1
7.0/11.5 × VREF/3.04RE = IOUT
60.87
0
1
1
0
6.0/11.5 × VREF/3.04RE = IOUT
52.17
0
1
0
1
5.0/11.5 × VREF/3.04RE = IOUT
43.48
0
1
0
0
4.0/11.5 × VREF/3.04RE = IOUT
34.78
0
0
1
1
3.0/11.5 × VREF/3.04RE = IOUT
26.08
0
0
1
0
2.0/11.5 × VREF/3.04RE = IOUT
17.39
* Current ratio (%) is the calculated set current value.
Current Decay Switching Truth Table
Current decay mode
DECAY pin
MD pin
Output chopping
SLOW DECAY
H
L
Upper-side chopping
FAST DECAY
L
L
Dual-side chopping
MIX DECAY
L
4V to 1.5V input
voltage setting
CR voltage > MD : dual-side chopping
CR voltage < MD : upper-side chopping
No. 6183-4/16
LB11847
Pin Function
Pin number
Pin name
Function description
1
MD
2
VREF1
Output set current reference supply pins
13
VREF2
Setting voltage range: 0V to 3V
3
CR1
12
CR2
4
E1
11
E2
5
DECAY1
SLOW mode/FAST mode selector pins
10
DECAY2
SLOW DECAY: H
6
OUTA
7
OUTA
8
OUTB
Sets the OFF time for FAST mode and SLOW mode in MIX DECAY
Setting input range: 4V to 1.5V
Output OFF time setting pins for switching operation
Pins for controlling the set current with sensing resistor RE
FAST DECAY: L
Output pins
9
OUTB
14
VBB
Output stage supply voltage pin
15
GND
Ground pin
27
PHASE1
16
PHASE2
26
ENABLE1
17
ENABLE2
22, 23
IA4, IA3
24, 25
IA2, IA1
Output set current digital input pins
21, 20
IB4, IB3
15-stage voltage setting
19, 18
IB2, IB1
28
VCC
Output phase selector input pins
Output ON/OFF setting input pins
Logic block supply voltage pin
VCC
PHASE1
ENABLE1
IA1
IA2
IA3
IA4
IB4
IB3
IB2
IB1
ENABLE2
PHASE2
GND
Pin Assignment
28
27
26
25
24
23
22
21
20
19
18
17
16
15
LB11847
14
VBB
13
VREF2
12
CR2
11
E2
10
DECAY2
9
OUTB
8
OUTB
7
OUTA
6
OUTA
5
DECAY1
4
E1
3
CR1
2
VREF1
MD
1
Top view
A12533
No. 6183-5/16
GND
VREF1
E1
E2
Current
circuit
selector
CR1
CR2
circuit
selector
A12534
VREF2
IB4
IA4
ENABLE2
DECAY2
IB3
One-shot
multiblanking
time
Control logic
circuit
PHASE2
VCC
I A3
One-shot
multiblanking
time
OUTB
IB2
OUTB
IA2
Thermal shutdown
circuit
VBB
I B1
Current
Control logic
circuit
OUTA
IA1
ENABLE1
DECAY1
PHASE1
MD
OUTA
LB11847
Block Diagram
No. 6183-6/16
LB11847
Sequence Table
Phase A
No. IA4
Phase B
IA3 IA2 IA1 ENA1 PHA1 IOUT
Phase 1-2
Phase W1-2
Phase 2W1-2
√
√
√
Phase 4W1-2
IB4 IB3 IB2 IB1 ENA2 PHA2 IOUT
0
1
1
1
1
0
0
100%
0
0
1
0
1
*
0%
1
1
1
1
1
0
0
100
0
0
1
0
0
0
17.39
2
1
1
1
1
0
0
100
0
0
1
1
0
0
26.08
3
1
1
1
0
0
0
96.65
0
1
0
0
0
0
34.78
4
1
1
0
1
0
0
91.30
0
1
0
1
0
0
43.48
5
1
1
0
0
0
0
86.95
0
1
1
0
0
0
52.17
6
1
0
1
1
0
0
82.61
0
1
1
1
0
0
60.87
7
1
0
1
0
0
0
78.26
1
0
0
0
0
0
69.56
8
1
0
0
1
0
0
73.91
1
0
0
1
0
0
73.91
9
1
0
0
0
0
0
69.56
1
0
1
0
0
0
78.26
10
0
1
1
1
0
0
60.87
1
0
1
1
0
0
82.61
11
0
1
1
0
0
0
52.17
1
1
0
0
0
0
86.95
12
0
1
0
1
0
0
43.48
1
1
0
1
0
0
91.30
13
0
1
0
0
0
0
34.78
1
1
1
0
0
0
96.65
14
0
0
1
1
0
0
26.08
1
1
1
1
0
0
100
15
0
0
1
0
0
0
17.39
1
1
1
1
0
0
100
16
0
0
0
1
1
*
0
1
1
1
1
0
0
100
17
0
0
1
0
0
1
17.39
1
1
1
1
0
0
100
18
0
0
1
1
0
1
26.08
1
1
1
1
0
0
100
19
0
1
0
0
0
1
34.78
1
1
1
0
0
0
95.65
20
0
1
0
1
0
1
43.48
1
1
0
1
0
0
91.30
21
0
1
1
0
0
1
52.17
1
1
0
0
0
0
86.95
22
0
1
1
1
0
1
60.87
1
0
1
1
0
0
82.61
23
1
0
0
0
0
1
69.56
1
0
1
0
0
0
78.26
24
1
0
0
1
0
1
73.91
1
0
0
1
0
0
73.91
25
1
0
1
0
0
1
78.26
1
0
0
0
0
0
69.56
26
1
0
1
1
0
1
82.61
0
1
1
1
0
0
60.87
27
1
1
0
0
0
1
86.95
0
1
1
0
0
0
52.17
28
1
1
0
1
0
1
91.30
0
1
0
1
0
0
43.48
29
1
1
1
0
0
1
95.65
0
1
0
0
0
0
34.78
30
1
1
1
1
0
1
100
0
0
1
1
0
0
26.08
31
1
1
1
1
0
1
100
0
0
1
0
0
0
17.39
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
* : Iout percentage (%) is the calculated setting value.
No. 6183-7/16
LB11847
Switch Timing Chart during PWM Drive
SLOW DECAY(upper-side chopping)
DECAY pin : High
MD pin : Low
E pin
Output pin
tn
CR pin
Output pin
Switching waveform
FAST DECAY
DECAY pin : High
MD pin : Low
A12535
Noise spike
E pin
Output pin
CR pin
Output pin
Switching waveform
A12536
No. 6183-8/16
LB11847
MIX DECAY
Noise spike
tm
E pin
Output pin
tn
CR pin
ton
Output pin
toff
Switching waveform
A12537
ton
toff
tm
tn
:
:
:
:
Output ON time
Output OFF time
FAST DECAY time in MIX DECAY mode
Noise cancelling time
MIX DECAY logic setting
DECAY pin : L
MD pin : 1.5V to 4.0V voltage setting
CR voltage and MD pin voltage are compared to select dual-side chopping
or upper-side chopping.
CR voltage > MD pin voltage: dual-side chopping
CR voltage < MD pin voltage: top-side choppinng
No. 6183-9/16
LB11847
SLOW DECAY current path
Regenerative current during upper-side transistor switching operation
ON
VBB
Current path at output ON
OFF
Regenerative circuit
when upper-side transistor is OFF
OUTA
OUTA
SBD
SBD
ON
Constant
Sensing voltage comparator
Re
A12538
Current path in FAST DECAY mode
VBB
ON
Current path at output ON
OFF
Current path in FAST DECAY mode
OUTA
SBD
SBD
OUTA
ON
Sensing voltage comparator
OFF
Re
A12539
No. 6183-10/16
LB11847
Composite Vectors of Set Current (1 step normalized to 90°)
Phase B
I OUT
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Sequence No.
0
I OUT
Phase A
No.
θ
Rotation angles
Composite vectors
0
θ0
0°
100.0
1
θ1
9.87°
101.5
2
θ2
14.6°
103.35
3
θ3
20.0°
101.78
4
θ4
25.5°
101.12
5
θ5
30.96°
101.4
6
θ6
36.38°
102.61
7
θ7
41.63°
104.7
8
θ8
45.0°
104.5
9
θ9
48.37°
104.7
10
θ10
53.62°
102.61
11
θ11
59.04°
101.4
12
θ12
64.5°
101.12
13
θ13
70.0°
101.78
14
θ14
75.4°
103.35
15
θ15
80.13°
101.5
16
θ16
90.0°
100.0
A12540
* Rotation angle and composite spectrum are calculated values.
No. 6183-11/16
LB11847
Set Current Waveform Model
Phase A
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
I OUT
Phase B
I OUT
PHASE1
PHASE2
A12541
No. 6183-12/16
LB11847
Sample Application Circuit
10 µF
5V
IA1
IA2
IA3
20
19
18
17
16
15
GND
ENABLE1
21
PHASE2
PHASE1
22
ENABLE2
23
IB1
24
IB2
25
IB3
26
IB4
27
IA4
28
VCC
Logic input
OUTA
OUTA
OUTB
OUTB
5
6
7
8
9
L
1.5V to 4.0V
voltage setting
10
11
12
13
VBB
DECAY1
4
VREF2
E1
3
CR2
CR1
2
E2
VREF1
1
DECAY2
MD
LB11847
14
L
SBD
SBD
SBD
42V
SBD
47 µF
0.51Ω
1.5V
0.51Ω
15 kΩ
15 kΩ
470 pF
470 pF
A12542
Notes on Usage
1. External diodes
Because this IC uses upper-side transistor switching in SLOW DECAY mode and dual-side transistor switching in
FAST DECAY mode, it requires external diodes between the OUT pins and ground for the regenerative current during
switching OFF. Use Schottky barrier diodes with low VF.
2. VREF pin
Because the VREF pin serves for input of the set current reference voltage, precautions against noise must be taken. The
input voltage range is 0 to 3.0V.
3. GND pin
The ground circuit for this IC must be designed so as to allow for high-current switching. Blocks where high current
flows must use low-impedance patterns and must be removed from small-signal lines. Especially the ground connection
for the sensing resistor RE at pin E, and the ground connection for the Schottky barrier diodes should be in close
proximity to the IC ground.
The capacitors between VCC and ground, and VBB and ground should be placed close to the VCC and VBB pins,
respectively.
No. 6183-13/16
LB11847
4. Simultaneous ON prevention function
This IC incorporates a circuit to prevent feedthrough current when phase switching. For reference, the output ON and
OFF delay times at PHASE and ENABLE switching are given below.
Reference data * typical value
Sink side
Source side
PHASE switching
ON delay time
1.9 µs
2.2 µs
(Low -> High)
OFF delay time
0.8 µs
1.8 µs
PHASE switching
ON delay time
1.4 µs
1.7 µs
(High -> Low)
OFF delay time
0.9 µs
1.35 µs
ENABLE switching
ON delay time
2.15 µs
2.75 µs
OFF delay time
1.2 µs
5.8 µs
5. Noise canceler
This IC has a noise canceling function to prevent malfunction due to noise spikes generated when switching ON. The
noise cancel time tn is determined by internal resistance of the CR pin and the constant of the externally connected CR
components. The constant also determines the switching OFF time.
Figure 1 shows the internal configuration at the CR pin, and Figure 2 shows the CR pin constant setting range.
Equation when logic voltage VCC = 5 V
CR pin voltage E1 = VCC • R/(R1+R2+R) [V]
Noise cancel time tn .=. (R1+R2) • C • 1n {(E1-1.5)/(E1-4.0)}
Switching OFF time toff .=. –R • C • 1n (1.5/E1) [s]
Internal resistance at CR pin : R1 = 1 kΩ, R2 = 300Ω (typ.)
[s]
*The CR constant setting range in Figure 2 on page 15 is given for reference. It applies to a switching OFF time in the
range from 8 to 100 µs. The switching time can also be made higher than 100 µs. However, a capacitor value of more
than several thousand pF will result in longer noise canceling time, which can cause the output current to become higher
than the set current. The longer switching OFF time results in higher output current ripple, causing a drop in average
current and rotation efficiency. When keeping the switching OFF time within 100 µs, it is recommended to stay within
the CR constant range shown in Figure 2.
Internal configuration at CR pin
VCC line
One-shot multi-blanking
time circuit
R1
CR pin
E1
C:470 pF
1 kΩ
R2
300Ω
R:15 kΩ
Figure 1
A12543
No. 6183-14/16
LB11847
Switching OFF Time and CR Setting Range
(toff time : approx. 8 to 100 µs)
C [pF]
3000
toff time : 30 µs
2000
toff time : 50 µs
toff time : 100 µs
1000
50k
100k
R [Ω]
A12544
Figure 2
No. 6183-15/16
LB11847
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
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or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of June, 1999. Specifications and information herein are subject to change
without notice.
PS No. 6183-16/16