STK681-320 [ONSEMI]
Motor Driver, DC, Forward / Reverse, with Brush;
| 型号： | STK681-320 |
| 厂家： | 
ONSEMI |
| 描述： | Motor Driver, DC, Forward / Reverse, with Brush 电动机控制 |
| 文件： | 总10页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA0762A
STK681-320
Thick-Film Hybrid IC
http://onsemi.com
Forward/Reverse Motor Driver
Overview
The STK681-320 is a hybrid IC for use in current control forward/reverse DC motor driver with brush.
Applications
• Office photocopiers, printers, etc.
Features
• Allows forward, reverse, and brake operations in accordance with the external input signal.
• 5.2A startup output current and 8A peak brake output current.
• Incorporating a current detection resistor (0.056Ω), fixed current control is possible.
• Obviate the need to design for the dead time in order to turn off the upper- and lower drive devices when switching
between the forward and reverse operation mode.
Specifications
Absolute maximum ratings at Tc = 25°C
Parameter
Maximum supply voltage 1
Maximum supply voltage 2
Input voltage
Symbol
Conditions
Ratings
unit
V
V
V
1 max
V
2=0V
52
CC
CC
2 max
max
No signal
-0.3 to +7.0
-0.3 to +7.0
5.2
V
CC
V
Logic input pins
V
IN
Output current
I
max
V
V
2=5.0V, DC current
A
O
CC
Brake current
I
B max
2=5.0V, square wave current, operating time 60ms
O
CC
8
A
(single pulse)
No heat sink
Allowable power dissipation
Operating substrate temperature
Junction temperature
PdPK max
Tc max
Tj max
Tstg
3.1
105
W
°C
°C
°C
150
Storage temperature
-40 to +125
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.
Semiconductor Components Industries, LLC, 2013
May, 2013
62911HKPC 018-08-0008/70908HKIM No. A0762-1/10
STK681-320
Allowable Operating Ranges at Ta = 25°C
Parameter
Operating supply voltage 1
Operating supply voltage 2
Input voltage
Symbol
Conditions
Ratings
unit
V
V
1
With signals applied
With signals applied
10 to 42
5±5%
CC
CC
V
2
V
V
0 to V
2
V
IN
1
CC
Output current 1
I
V
V
V
V
2=5.0V, DC current, Tc≤70°C
5.2
4.2
3.5
A
O
CC
CC
CC
CC
Output current 2
I
I
I
2
3
2=5.0V, DC current, Tc=90°C
A
O
O
Output current 3
2=5.0V, DC current, Tc=105°C
A
Brake current
B
2=5.0V, square wave current, operating time 3.6ms,
O
8
A
Tc=105°C
Refer to the graph for each conduction-period tolerance range for the output current and brake current.
Electrical Characteristics at Tc = 25°C, V 1 = 24V, V 2 = 5.0V
CC CC
Parameter
Symbol
Conditions
min
typ
max
unit
mA
V
V
2 supply current
I
Forward or reverse operation
1.7
0.8
4
CC
CCO
FET diode forward voltage
Output saturation voltage 1
Output saturation voltage 2
Vdf
If=1A (R =23Ω)
1.4
L
Vsat1
Vsat2
R =23Ω, F1, F2
0.14
0.16
0.20
V
L
R =23Ω, F3, F4+current detection
L
0.23
50
V
resistance
Output leak current
Input high voltage 1
Input high voltage 2
Input low voltage
Input current 1
I
F1, F2, F3, and F4 OFF operation
μA
V
OL
V
1
IN1, IN2 pins
INH pin
4.5
2.5
IH
IH
V
2
V
V
IN1, IN2, INH pins
0.6
0.40
1.2
V
IL
I
1
IN1, IN2 pins, V 1=5V
IH
0.10
0.30
0.20
0.60
0.29
mA
mA
V
IH
Input current 2
I
2
INH pin, V 2=5V
IH
IH
Vref1
Current set ting voltage
Between pins Vref1 and S.P
Note: A fixed-voltage power supply must be used.
Package Dimensions
unit:mm (typ)
29.2
25.6
(20.47)
4.5
2.0
(R1.7)
1
19
4.2
1.0
0.52
0.4
(5.6)
8.2
18 1.0=18.0
(20.4)
No. A0762-2/10
STK681-320
Derating Curve of Motor Current, I vs. STK681-320 Operating Board Temperature, Tc
O,
I
- Tc
O
6
5
4
3
2
1
0
0
10
20
30
40
50
60
70
80
90 100 110
Operating Substrate Temperature, Tc- °C
ITF02521
The range of DC operating current lies within the above derating curve in the V 1 allowable operating range.
CC
The above motor current I is valid within the chopping operating range of DC operating.
O
The above operating substrate temperature, Tc, is measured immediately when the motor is started.
Since Tc fluctuates due to the ambient temperature, Ta, the motor current value, and continuous or intermittent
operations of the motor current, always confirm this values using an actual set.
STK681-320 Allowable Brake Current Range
I B - t
O
9
8
7
6
5
4
3
2
Tc=25°C
90°C
80°C
70°C
105°C
1
0
2
3
5
7
2
3
5
7
2
3
5 7
1000
1.0
10
100
Conduction Time, t - ms
ITF02494
No. A0762-3/10
STK681-320
Internal Block Diagram
NC
11
NC V 1 OUT1 OUT2 V
CC
1
NC
5
NC
4
CC
7
10
9
8
6
F1
F3
F2
F4
IN1 12
13 IN2
V
2
15
CC
82kΩ
Vref1a
RSI
16
19
Current
control
14
INH
Overheating
current control
RSO
GND
3
Rs
0.056Ω
5.1kΩ
1
2
S.P
Vref1b
18
17 Vref2
ITF02479
Sample Application Circuit
STK681-320
V
2=5V
IN1
15
12
13
14
7
9
CC
V
1=24V
CCW
CC
IN2
OUT1
INH
8
6
+
Motor
C2
10μF/50V
OUT2
Vref2
17
16
CW
Vref1a
4
5
NC
NC
18
3
Vref1b
RSO
+
10 NC
RSI
19
C1
47μF to /50V
11 NC
1
GND
2
S.P
ITF02478
No. A0762-4/10
STK681-320
Motor Drive Conditions (H: High-level input; L: Low-Level Input)
IN1
IN2
INH
Remarks
Stop 1 (standby)
When motor is not rotating
H
H
H or L
Stop 2 (supply power turned off by input during
motor rotation)
Stop signal that is applied when the motor is
running and used to turn off power.
H
H
L
H
L
H
H
H
H
Forward (CW)
Reverse (CCW)
Brake
No input signal is needed that turns off the
upper- and lower-side drive devices when
switching the rotational direction.
GND side MOSFET ON
L
L
H
L
L
L
H
L
L or H
* IN1=IN2=H and INH=L are prohibited during motor rotation.
Notes
(1) Be sure to set the capacitance of the power supply bypass capacitor, C1, so that the ripple current of the capacitor,
which varies as motor current increases, falls within the allowed range.
(2) Although the Vref2 pin is kept open, if connected to the GND or S.P pin, the overheating current control circuit
ceases to function.
(3) Fixed current chopping operations based on F1 and F2 are used for current control. The timing given below is used
for OUT1 or OUT2 voltage output and for F1 or F2 drain current.
OUT1 or OUT2
Output voltage
V
1-Vsat1
CC
GND
I
peak (current setting value)
O
F1 or F2
Drain current
0A
50μs
I
peak (current setting value)
O
Motor current
0A
(4) Do not connect the N.C pins shown in the internal block diagram or sample application circuit to a circuit pattern on
the PCB.
(5) This IC is not designed for use in an H-bridge driver for power supplies because the I/O response time of its GND
side driving device, required when switching the motor rotational direction, is several scores of microseconds.
It should be used only for DC motor drivers.
No. A0762-5/10
STK681-320
(6) Sample Timing Diagram
IN1
IN2
INH
Reverse
rotation
Stop 1
Forward
Stop 1
Forward
rotation
Reverse
rotation
Brake
Brake
Stop 2
rotation
IN1
IN2
INH
Reverse
rotation
Stop 1
Forward
Stop 1
Forward
rotation
Reverse
rotation
Stop 2
Brake
Brake
rotation
(7) Smoke Emission Precautions: There is a possibility of smoke emission if the hybrid IC is subjected to physical or
electrical damage as the result of being used without compliance with the specifications.
I/O Functions of Each Pin
Pin Name
Pin No.
Function
IN1
12
Input pin for turning F1 and F3 ON and OFF
At high level, F1: ON and F3: OFF; at low level F1: OFF and F3: ON
Input pin for turning F2 and F4 ON and OFF
IN2
13
14
At high level, F2: ON and F4: OFF; at low level, F2: OFF and F4: ON
Pin for turning F1 and F2 OFF; At high level F1 and F2: OFF
This pin is usually low or open.
INH
OUT1
OUT2
8
6
This pin connects to the motor and outputs source/sync current depending on conditions at IN1 and IN2.
This pin connects to the motor and outputs source/sync current depending on conditions at IN1 and IN2.
Vref1a
Vref1b
16
18
This pin is used for current setting for constant-current operation performed with the Vrefa and Vrefb pins
connected
A voltage of 0.29V at Tc=25°C results for Vref1.
0.29V is set by connecting 82kΩ and 5.1kΩ in series.
Current detection resistance is Rs=0.056Ω. Set using I peak=Vref1÷Rs.
O
Vref2
17
Be sure to usually leave this pin open.
The overheating control circuit can be made to stop operating by connecting this pin to the GND or S.P pin.
S.P
2
3
Vref1 voltage can be lowered by connecting a resistor between the Vref1 and S.P pins.
RSO
This pin is used to monitor the voltage across the current sensing resistor, Rs. Must be connected to the RSI
pin.
RSI
19
This pin is connected to the RSO pin and serves as an input to the circuit that compares the input with Vref1.
No. A0762-6/10
STK681-320
Technical Information
(1) Substrate temperature rise , ΔTc (no heat sink) - Internal average power dissipation, PdAV
ΔTc - PdAV
80
70
60
50
40
30
20
10
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Hybrid IC internal average power dissipation, PdAV - W
ITF02508
(2) Internal average power dissipation, Pd, in the DC current-motor current, I , characteristics (typ values for Pd)
O
Pd - I
O
10
V
CC
V
CC
1=24V
2=5.0V
9
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
Motor current, I - A
O
ITF02541
(3) Overheating current control characteristics
I
O
- Tc
6
Load 2Ω+5mH
5
4
3
2
1
0
0
10
20 30 40 50 60 70 80 90 100 110 120
Operating substrate temperature, Tc- °C
ITF02542
Overheating current control functions to prevent driver failure if a motor lock malfunction occurs.
No. A0762-7/10
STK681-320
(4) Derating curve of the package power dissipation, PdPK, against the ambient temperature, Ta
PdPK - Ta
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
20
40
60
80
100
120
Ambient temperature, Ta - °C
ITF02511
The package power dissipation, PdPK, refers to the internal average power dissipation, Pd, permissible if used
without a heat sink
Vsat1, Vsat2 - I
Vdf - If
O
1.4
1.2
1.0
0.8
0.6
0.4
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
Tc=25°C
V
V
1=24V,
2=5.0V,
CC
CC
Tc=25°C
0.2
0
0.1
0
0
1
2
3
4
5
0
1
2
3
4
5
If - A
I
- A
ITF02543
O
ITF02544
Vsat1 - V
1
V
- V
1
IH
OUT
IH
1.2
1.0
0.8
0.6
0.4
25
20
V
V
1=24V,
2=5.0V,
CC
CC
Tc=25°C,
OUT1-OUT2,
Pin load=1kΩ,
14pin=Low
I =5A
O
15
10
4A
3A
2A
1A
5
0
0.2
0
2.5
3.0
3.5
4.0
4.5
5.0
0
1
2
3
4
5
V
1 - V
12pin-GND voltage, V 2 - V
IH
IH
ITF02545
ITF02515
No. A0762-8/10
STK681-320
V
OUT
- V
2
IH
I
IH
1 - V
1
IH
25
20
250
V
V
1=24V,
2=5.0V,
V
V
1=24V,
2=5.0V,
CC
CC
CC
CC
Tc=25°C
Tc=25°C,
200
OUT1-OUT2,
Pin load=1kΩ,
12pin=High
15
10
150
100
5
0
50
0
0
1
2
3
4
5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
14pin-GND voltage, V 2 - V
IH
12, 13pin-GND voltage, V 1 - V
IH
ITF02516
ITF02517
I
IH
2 - V
2
F1, F2 - A.S.O
IH
700
600
500
400
300
200
100
7
Tc=25°C,
Tj=150°C,
Single pulse
V
V
1=24V,
2=5.0V,
CC
CC
5
3
2
Tc=25°C
10
7
5
3
2
1.0
7
5
3
2
0.1
7
5
100
0
3
2
0.01
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
2
3
5
7
2
3
5
7
1.0
10
100
14pin-GND voltage, V 2 - V
-V
- V
DS
ITF02518
ITF02546
F3, F4 - A.S.OIH
100
Tc=25°C,
Tj=150°C,
7
5
Single pulse
3
2
10
7
5
3
2
1.0
7
5
3
2
0.1
1.0
2
3
5
7
2
3
5
7
10
100
V
- V
DS
ITF02547
No. A0762-9/10
STK681-320
Input Pin Configurations
IN1, IN2
INH
14
12
or
13
1
1
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PS
No. A0762-10/10
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