LV8411GR Motor Driver Application Note

LV8411GR
Bi-CMOS LSI
For DSC, and Cell Phone Camera Modules
4-channel Single-chip
Motor Driver IC
Application Note
http://onsemi.com
Overview
The LV8411GR is an H- bridge motor driver IC and is able to control 4 modes of forward, reverse, brake,
and standby.
This IC housed in a miniature package is optimum for use in a stepping motor driving system for DSC or a
camera module of cell phones.
Function
 Saturation drive H bridge: 4 channels
 Built-in thermal protection circuit
 Built-in low voltage malfunction prevention circuit
 Incorporates a transistor for driving photosensors
Typical Applications
 Digital still camera (DSC)
 Camera module of cell phones
Pin Assignment
Package Dimensions
Unit : mm(typ)
TOP VIEW
SIDE VIEW
BOTTOM VIEW
(0.09)
(0.125)
3.0
0.4
3.0
(C0.14)
24
2 1
0.19
SIDE VIEW
(0.5)
(Top view)
(0.035)
0.8
0.4
SANYO : VCT24(3.0X3.0)
Caution: The package dimension is a reference value, which is not a guaranteed value.
Semiconductor Components Industries, LLC, 2013
December, 2013
1/19
LV8411GR Application Note
Recommended Soldering Footprint
Reference Symbol
eD
eE
e
b3
I1
c
Unit : mm
VCT24(3.0×3.0)
2.70
2.70
0.40
0.19
0.70
0.20
Block Diagram
2/19
LV8411GR Application Note
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter
Power supply voltage 1
Power supply voltage 2
Output peak current
Output continuous current 1
Output continuous current 2
Symbol
VM max
VCC max
IO peak
IO max1
IO max2
Conditions
Ratings
6.0
6.0
600
400
30
Channels 1 to 4, t  10msec, ON-duty  20%
Channels 1 to 4
PI1
Allowable power dissipation
Pd max
Mounted on a circuit board*
Operating temperature
Topr
Storage temperature
Tstg
* Specified circuit board : 40mm50mm0.8mm : glass epoxy four-layer board
1.05
-30 to +85
-55 to +150
Unit
V
V
mA
mA
mA
W
C
C
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage
under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may
be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Recommended Operating Conditions at Ta  25C
Parameter
Symbol
Power supply voltage
Conditions
Ratings
min
VM
range 1
Power supply voltage
range 2
VCC
Logic input voltage range
VIN
Input frequency
fIN
typ
max
Unit
2.5
5.5
V
2.5
5.5
V
0
VCC+0.3
100
IN1 to 8, INA
V
kHz
Electrical Characteristics at Ta=25°C, VM=5.0V, VCC=3.3V, unless otherwise specified.
Parameter
Symbol
Conditions
Ratings
min
typ
Unit
max
Istn
IN1 to 8 = “L”
VM current drain
IM
IN1 = “H”, IM1 + IM2, with no load
50
100
200
A
IN1 = “H”
0.3
0.6
1.2
mA
VCC current drain
VCC low-voltage cutoff voltage
ICC
VthVCC
Low-voltage hysteresis voltage
VthHIS
1.0
A
Standby mode current drain
2.0
2.25
2.5
V
100
150
200
mV
TSD
Design guarantee value *
160
180
200
C
TSD
Design guarantee value *
10
30
50
C
Rin
IN1 to 8
50
100
200
k
IinL
VIN = 0V, IN1 to 8
VIN = 3.3V, IN1 to 8
1.0
A
IinH
16.5
33
60
A
Logic input high-level voltage
Vinh
IN1 to 8
Logic input low-level voltage
Vinl
IN1 to 8
1.0
V

Thermal shutdown temperature
Thermal hysteresis width
OUT1 to 8
Logic pin internal pull-down
resistance
Logic pin input current
Output on-resistance
2.5
V
Ronu
IO = 400mA, upper ON resistance
0.75
0.9
Rond
IO = 400mA, lower ON resistance
0.45
0.6

1.0
A
Output leakage current
IOleak
Diode forward voltage
VD
ID = -400mA
0.7
0.9
1.2
V
Rin
INA
50
100
200
k
IinL
VIN = 0V, INA
VIN = 3.3V, INA
1.0
A
IinH
16.5
33
60
A
Logic input high-level voltage
Vinh
INA
Logic input low-level voltage
Vinl
INA
Output on-resistance
Ron
IO = 10mA
PI1
Logic
pin
internal
pull-down
resistance
Logic pin input current
Output leakage current
IOleak
2.5
V
3.0
1.0
V
6.0

1.0
A
3/19
LV8411GR Application Note
Figure 2. VM current drain vs. VM supply voltage
Figure 4. Output voltage vs. Input voltage
Figure 3. VCC current drain vs. VCC supply
voltage
Figure 5. Input current vs. Input voltage
Figure 6. VCC low voltage protection characteristic
Figure 7. Thermal protection characteristic
Figure 8. Output on-resistance vs. Temperature
Figure 9. PI1 on-resistance vs. Temperature
4/19
LV8411GR Application Note
Pin Functions
Pin No.
1
Pin name
INA
Pin Function
Control signal input pin
(Photo sensor driving transistor)
Equivalent Circuit
VCC
When High, PI1 operates.
With 100KΩ of pulldown resistor,
when OPEN, the operation is
equivalent to that of Low control
signal.
PWM control is feasible when input
frequency is 100KHz or lower.
10kΩ
100kΩ
GND
2
IN1
Control signal input pin
3
IN2
When the voltage level is High, all the
4
IN3
outputs that correspond to inputs are
5
IN4
activated.
6
IN5
Since 100KΩ of pull-down resistor is
7
IN6
inserted, when OPEN the operation is
8
IN7
equivalent to that of Low control
9
IN8
signal.
VCC
PWM control is feasible when the
10kΩ
input frequency is 100KHz or lower.
100kΩ
GND
11
OUT8
Output pin
13
OUT7
This pin is connected to the motor.
14
OUT6
Operation mode is determined
15
OUT5
according to the state of control signal
16
OUT4
input pins.
17
OUT3
18
OUT2
20
OUT1
VM
PGND
5/19
LV8411GR Application Note
Pin No.
24
Pin name
PI1
Pin Function
Equivalent Circuit
Photo sensor driving transistor output
pin
ON/OFF of the internal Nch MOS is
determined according to the state of
INA
GND
22
VCC
Logic system power supply
connection pin
Supply voltage range is between 2.5V
and 5.5V.
To stabilize VCC power line, connect
a bypass capacitor between this pin
and SGND(pin 23).
10
VM2
Motor power supply connection pin
21
VM1
Supply voltage range is between 2.5V
and 5.5V. To stabilize VM power line,
connect a bypass capacitor between
these pins and PGND(12,19pin)
respectively.
23
SGND
Signal ground
12
PGND2
Power ground
19
PGND1
6/19
LV8411GR Application Note
Operation explanation
Saturation drive H bridge
4-channels H bridge drivers are integrated independently which enable controlling 4 modes: forward, reverse,
brake, and standby.
Logic input specifications
 Common channels 1 to 4
ch1 : IN1 to IN2, OUT1 to OUT2
ch2 : IN3 to IN4, OUT3 to OUT4
ch3 : IN5 to IN6, OUT5 to OUT6
ch4 : IN7 to IN8, OUT7 to OUT8
Input
Output
IN1
IN2
OUT1
OUT2
L
L
OFF
OFF
H
L
H
L
L
H
L
H
H
H
L
L
Operation mode
Standby
CW (forward)
CCW (reverse)
Brake
When IN1 to IN8 are “Low”, the operation of H bridge output stage is in standby mode.
When “high” is applied to an input pin that corresponds to each channel, the output transistor of the H- bridge
output stage operates and the operation shifts as follows: forward, reverse, and brake.
（Forward）
（Reverse）
(Brake)
Figure 10. Output stage transistor function
 Photo sensor driving transistor
By setting INA to High, Nch transistor for driving photo sensor operates.
Since you can sink constant current of 30mA at a maximum, this motor driver can be used for LED.
When thermal shutdown and VCC low-voltage cut circuits are activated, OUT1 through OUT8 are turned
OFF under control of the internal circuit. But the output (PI1) of photo sensor driving transistor continues
operation.
Input
Photo sensor driving
PI1
INA
L
OFF
H
ON
7/19
LV8411GR Application Note
Thermal protection
This IC includes thermal shutdown circuit.
The thermal shutdown circuit in is corporated and the output is turned off when junction temperature Tj
exceeds 180C. As the temperature falls by hysteresis, the output turned on again (automatic restoration).
The thermal shutdown circuit does not guarantee the protection of the final product because it operates when
the temperature exceed the junction temperature of Tjmax=150C.
Thermal hysteresis width is the difference of temperature between the start of thermal shutdown and auto
recovery.
Thermal shutdown temperature = 180C (typ)
Thermal hysteresis width
= 30°C(typ)
VCC Low voltage malfunction prevention
This IC includes the function of VCC Low voltage malfunction prevention.
When the supply voltage of VCC lowers down to approximately 2.25V (typ), H bridge output stage shifts from
operation mode to standby mode. On the other hand, when the supply voltage of VCC increases to
approximately 2.4V, H bridge output stage shifts to operation mode.
Low-voltage hysteresis voltage is the difference of VCC electric potential between VCC increase and
decrease where switch of H bridge output stage occurs.
VCC low-voltage cutoff voltage = 2.25V(typ)
Low-voltage hysteresis voltage = 150mV(typ)
8/19
LV8411GR Application Note
Application Circuit Example
2phase excitation mode setting of stepping motor
A stepping motor can be driven through 2-phase excitation mode by switching input signal as follows.
INPUT
OUTPUT
Position
No.
IN1
IN2
IN3
IN4
OUT1
OUT2
OUT3
OUT4
H
L
L
H
H
L
L
H
(1)
H
L
H
L
H
L
H
L
(2)
L
H
H
L
L
H
H
L
(3)
L
H
L
H
L
H
L
H
(4)
Figure 11. Sample Application Circuit
(Stepping motor drive circuit)
Bypass capacitor has no specific regulation on electrolytic capacitor or ceramic capacitor. However, it is
recommended that the capacitor with large capacitance is connected adjacent to supply pin and GND to
ensure that it can control voltage fluctuation of the supply line sufficiently. When capacitor with high
capacitance is used, charge current to capacitor increases. Hence, caution is required for the battery’s
capability of current supply.
Recommendation value
Between VM and PGND: 1.0uF or higher
Between VCC and SGND: 0.1uF or higher
9/19
LV8411GR Application Note
INPUT
IN1
H
IN2
OUTPUT
IN3
IN4
OUT1
OUT2
OUT3
OUT4
Position No.
L
L
H
H
L
L
H
①
L
L
L
H
L
OFF
OFF
②
H
L
H
L
H
L
H
L
③
L
L
H
L
OFF
OFF
H
L
④
L
H
H
L
L
H
H
L
⑤
L
H
L
L
L
H
OFF
OFF
⑥
L
H
L
H
L
H
L
H
⑦
L
L
L
H
OFF
OFF
L
H
⑧
(1) (2) (3) (4)
OUT1
OUT2
OUT3
OUT4
IOUT12
IOUT34
Figure 12. Timing chart for stepping motor 2phase excitation
10/19
LV8411GR Application Note
1-2phase excitation mode setting of stepping motor
A stepping motor can be driven through 1-2-phase excitation mode by switching input signal as follows.
INPUT
OUTPUT
Position
No.
IN1
IN2
IN3
IN4
OUT1
OUT2
OUT3
OUT4
H
L
L
H
H
L
L
H
(1)
H
L
L
L
H
L
OFF
OFF
(2)
H
L
H
L
H
L
H
L
(3)
L
L
H
L
OFF
OFF
H
L
(4)
L
H
H
L
L
H
H
L
(5)
L
H
L
L
L
H
OFF
OFF
(6)
L
H
L
H
L
H
L
H
(7)
L
L
L
H
OFF
OFF
L
H
(8)
Figure 13. Stepping motor drive circuit
11/19
LV8411GR Application Note
The kickback is generated by the coil
component of the motor.
(1)(2)(3)(4)(5)(6)(7)(8)
OUT1
OUT2
OUT3
OUT4
IOUT12
IOUT34
Figure 14.Timing chart for stepping motor 1-2phase excitation
12/19
LV8411GR Application Note
Operation setting of DC motor
CW (forward)
INPUT
OUTPUT
IN1
IN2
OUT1
OUT2
H
L
H
L
H
H
L
L
CCW (reverse)
INPUT
OUTPUT
IN1
IN2
OUT1
OUT2
L
H
L
H
H
H
L
L
Condition.
CW(forward)
Brake
Condition.
CCW (reverse)
Brake
Figure 15. DC motor drive circuit
CW(forward)
CCW(reverse)
OUT1
OUT1
OUT2
OUT2
Regenerative current
IOUT12
IOUT12
Regenerative current
Inrush current of DC motor
Inrush current of DC motor
Figure 16. Driving waveform of DC motor
13/19
LV8411GR Application Note
Input and output characteristics of H-Bridge
LV8411GR can be driven by direct PWM control of H-Bridge by inputting PWM signal to IN.
However output response of H-Bridge worsens around On-duty 0%, which generates dead zone. As a result,
IC control loses linearity.
If you intend to drive motor in such control range, make sure to check the operation of your motor.
Input-Output Characteristics of H-Bridge (reference data)
Forward/Reverse⇔Brake
VM=5.0V
Figure 17.Measurement connection diagram
Figure 18. Input and Output Characteristics of H-Bridge
14/19
LV8411GR Application Note
Evaluation Board Manual
1. Evaluation Board circuit diagram
Bill of Materials for LV8411GR Evaluation Board
Value
Tol
Footprint
Manufacturer
Manufacturer
Part Number
Substitution
Allowed
Lead
Free
VCT24
(3.0×3.0)
ON
Semiconductor
LV8411GR
No
Yes
Designator
Qty
Description
IC1
1
Motor Driver
C1
1
VM Bypass
capacitor
10µF
C2
1
VM Bypass
capacitor
1.0µF
10V
10%
1608
Murata
GRM188B11A
105K
Yes
Yes
C3
1
VCC Bypass
capacitor
0.1µF
100V
10%
1608
Murata
GRM188R72A
104KA35D
Yes
Yes
R1
1
LED current limitation
resistance
Yes
LED
1
Substitution of photo
sensor
Yes
SW1-SW9
9
Switch
MIYAMA
MS-621-A01
Yes
Yes
TP1-TP20
20
Test points
MAC8
ST-1-3
Yes
Yes
Yes
15/19
LV8411GR Application Note
Evaluation Board PCB Design
57mm
57mm
57mm
(Top side)
(Back side)
16/19
LV8411GR Application Note
2. Two stepping motor drive
 Connect a stepping motor 1 with OUT1, OUT2, OUT3 and OUT4.
 Connect a stepping motor 2 with OUT5, OUT6, OUT7 and OUT8.
 Connect the motor power supply with the terminal VM, the control power supply with the terminal VCC.
Connect the GND line with the terminal GND.
 You can drive stepping motor through 2-phase excitation mode by switching input signal as follows. In the
case of stepping motor 2, switch IN5 to IN8 in the same way.
INPUT
OUTPUT
Position
No.
IN1
IN2
IN3
IN4
OUT1
OUT2
OUT3
OUT4
H
L
L
H
H
L
L
H
(1)
H
L
H
L
H
L
H
L
(2)
L
H
H
L
L
H
H
L
(3)
L
H
L
H
L
H
L
H
(4)
17/19
LV8411GR Application Note
For 1-2-phase excitation mode, switch input signal as follows.
INPUT
OUTPUT
IN1
IN2
IN3
IN4
OUT1
OUT2
OUT3
H
L
L
H
H
L
L
H
L
L
L
H
L
OFF
H
L
H
L
H
L
H
L
L
H
L
OFF
OFF
H
L
H
H
L
L
H
H
L
H
L
L
L
H
OFF
L
H
L
H
L
H
L
L
L
L
H
OFF
OFF
L
OUT4
H
OFF
L
L
L
OFF
H
H
Position
No.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
*The descriptions in p.8 to p.11are the same as the description in this section.
By setting INA to High, Nch transistor for photo sensor operates.
Since you can sink constant current of 30mA at a maximum, this motor driver can be used for LED.
If necessary, please use LED to confirm the operation of the IC.
18/19
LV8411GR Application Note
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19/19