STK681-332-E [ONSEMI]
电机驱动器,直流,正向/反向,带电刷;型号: | STK681-332-E |
厂家: | ONSEMI |
描述: | 电机驱动器,直流,正向/反向,带电刷 局域网 电动机控制 电机 驱动 驱动器 |
文件: | 总14页 (文件大小:158K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Ordering number : ENA1591C
STK681-332-E
Thick-Film Hybrid IC
http://onsemi.com
Forward/Reverse Motor Driver
Overview
The STK681-332-E 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.
12A peak startup output current and 12A peak brake output current.
On-chip output short-circuit detection function.
Connecting an external current detection resistor allows overcurrent detection and peak current control in the PWM
operation mode.
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 = 25C
Parameter
Maximum supply voltage 1
Maximum supply voltage 2
Input voltage
Symbol
max
Conditions
Ratings
unit
V
V
V
V
I
V
=0V
DD
52
CC
max
No signal
-0.3 to +6.0
-0.3 to +6.0
8.5
V
DD
max
Logic input pins
V
IN
Output current1
1 max
2 max
B max
V
V
V
=5.0V, DC current
A
O
DD
DD
DD
Output current2
I
I
=5.0V, Pulse current: 5ms
=5.0V, square wave current, operating time 15ms
12
A
O
O
Brake current
12
A
(single pulse, low side brake)
No heat sink
Allowable power dissipation
Operating substrate temperature
Junction temperature
PdPK max
Tc
2.8
-20 to +105
150
W
C
C
C
Metal surface temperature of the package
Tj max
Tstg
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.
ORDERING INFORMATION
See detailed ordering and shipping information on page 14 of this data sheet.
Semiconductor Components Industries, LLC, 2013
June, 2013
61913HK 013-13-0024/70611HKPC/22311HKIM/N1809HKIM No. A1591-1/14
STK681-332-E
Allowable Operating Ranges at Ta = 25C
Parameter
Operating supply voltage 1
Operating supply voltage 2
Operating supply voltage 2
Input voltage
Symbol
1
Conditions
With signals applied (Tc=105C)
With signals applied (Tc=90C)
With signals applied
Ratings
unit
V
V
V
V
V
I
10 to 38
10 to 42
5±5%
CC
2
V
CC
DD
V
0 to V
DD
V
IN
1
Output current 1
V
V
V
=5.0V, DC current, Tc=80C
6.1
5
A
O
DD
DD
DD
Output current 2
I
I
2
=5.0V, DC current, Tc=105C
A
O
Brake current
B
=5.0V, square wave current, operating time 2ms,
O
12
A
Low side brake, Tc=105C
Refer to the graph for each conduction-period tolerance range for the output current and brake current.
Electrical Characteristics at Tc = 25C, V
= 24V, V = 5.0V
DD
CC
Parameter
Symbol
Conditions
min
typ
max
unit
mA
V
V
supply current
I
Forward or reverse operation
6
9
DD
CCO
FET diode forward voltage
Output saturation voltage 1
Output saturation voltage 2
Output leak current
Vdf
If=1A (R =23)
0.75
65
1.4
100
85
L
Vsat1
Vsat2
R =23, F1, F2
mV
mV
A
V
L
R =23, F3, F4
50
L
I
F1, F2, F3, and F4 OFF operation
IN1, IN2, ENABLE pins
50
OL
Input high voltage
V
2.5
IH
Input low voltage
V
IN1, IN2, ENABLE pins
0.8
75
10
V
IL
High-level input current
Low-Level Input current
Overcurrent detection voltage
Internal PWM frequency
Overheat detection temperature
I
I
H
IN1, IN2, ENABLE pins, V =5V
IH
50
A
A
V
IL
IL
L
IN1, IN2, ENABLE pins, V =GND
IL
VOC
fc
Between pins Vref1 and S.P
0.48
46
32
62
kHz
C
TSD
Design guarantee
144
Note: A fixed-voltage power supply must be used.
No. A1591-2/14
STK681-332-E
Package Dimensions
unit:mm (typ)
24.2
(18.4)
4.5
(R1.47)
1
19
0.4
1.0
0.5
2.0
18 1.0=18.0
4.0
4.45
Derating Curve of Motor Current, I vs. STK681-332-E Operating Board Temperature, Tc
O,
I
- Tc
O
9
8
7
6
5
4
3
2
DC
PWM(V =24V)
CC
PWM(V =33V)
CC
PWM(V =42V)
CC
1
0
0
10
20
30
40
50
60
70
80
90 100 110
Operating Substrate Temperature, Tc - C
ITF02711
(The maximum PWM frequency is 50kHz.)
The PWM frequencies in the above graph indicate the ENABLE signal.
The same PWM I derating curves as those shown above will be obtained when the internal PWM frequency of the
O
STK681-332-E is used.
Increasing the V
graph.
supply voltage narrows the I derating curve range, so I should be set in reference to the above
O O
CC
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.
The Tc temperature should be checked in the center of the metal surface of the product package.
No. A1591-3/14
STK681-332-E
STK681-332-E Allowable Brake Current Range (Low side: F3, F4=ON)
I B - t
O
13
12
11
10
9
Tc=25C
8
70C
80C
90C
7
6
5
105C
2
3
5
7
2
3
5
7
2
3
5 7
1000
1.0
10
100
Conduction Time, t - ms
ITF02712
STK681-332-E Allowable Brake Current Range (High side: F1, F2=ON)
I
- t
O
13
12
11
10
9
Tc=25C
8
90C
80C
7
70C
6
5
105C
3
2
3
5
7
2
3
5
7
2
5 7
1000
1.0
10
100
Conduction Time, t - ms
ITF02713
The output current specifications are the same as the high side brake current specifications.
No. A1591-4/14
STK681-332-E
Internal Block Diagram
OUT1
10
V
OUT2
Unassigned pins
CC
8
4
6
5
11
7
12
9
F1
F3
F2
F4
IN2
17
IN1
16
ENABLE
18
GND
1
2
3
V
(5V)
DD
Output short-circuit
detection
15
Overheat
Detection
FAULT
13
Latch
Overcurrent
Detection
Vref
19
PWM
(46kHz typ)
Constant-
Setting voltage
(0.48V typ)
current control
S.GND
14
No. A1591-5/14
STK681-332-E
Sample Application Circuit
STK681-332-E
9
7
V
=24V
CC
FAULT
13
V
(5V)
15
16
DD
10
8
IN1
IN2
OUT1
OUT2
17
18
CCW
N.C
N.C
12
ENABLE
Motor
(DC or PWM)
11
6
CW
R1
N.C
5
4
Vref
19
14
C1
R2
C3
47F to /50V
3
2
1
C2
10F/50V
GND
0.1F
Rs
S.GND
Motor Drive Conditions (H: High-level input; L: Low-Level Input)
IN1
IN2
ENABLE
Remarks
Stop
Turns the power supply OFF.
H
L
L
L
L
ENABLE must be set Low when V
or falling.
is rising
DD
L
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.
H
L
L
H
H
H
GND side MOSFET ON
L
L
L or H
H
V
side MOSFET ON
H
H
CC
* Output control is enabled by applying an external PWM signal to the ENABLE pin.
The product can run at a minimum external PWM pulse width of 1s. In the case when the high pulse width is less
than 16s, however, the IC may fail to detect a short-circuit condition when an output short-circuit occurs.
If V
is turned off in the condition with the ENABLE pin set to high during motor rotation or PWM operation, the
DD
FAULT signal is output when V is falling, indicating error condition. For this reason, ENABLE must be set to low
DD
when V
is rising or falling.
DD
When both IN1 and IN2 are set low, the MOSFET on the V
side is driven. To minimize the loss when stopped, set
CC
IN1 = IN2 = High and ENABLE = Low to turn off the gate signal to the V
side MOSFETs.
CC
Setting the current limit using the Vref pin
Output current peak (Iop) = (Vref 4.9) Rs
“4.9” in the above formula indicates the portion of the Vref voltage that is divided using the circuit inside the control
IC.
Vref = (R2 (R1+R2)) V
DD
Rs is the external current detection resistance value of the HIC, and Vref ≤ 2.0V must be satisfied so that overcurrent
detection is not triggered.
No. A1591-6/14
STK681-332-E
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) Chopping operations based on F3 and F4 are used for current control. The timing given below is used for OUT1 or
OUT2 voltage output and for F3 or F4 drain current.
(3) Do not connect the N.C pins (5, 11, 12 pin) shown in the internal block diagram or sample application circuit to a
circuit pattern on the PCB.
OUT1 or OUT2
Output voltage
V
+Vdf
CC
GND
I
peak (current setting value)
O
F3 or F4
Drain current
0A
22s
I
peak (current setting value)
O
Motor current
0A
(4) Sample Timing Diagram
IN1
IN2
ENABLE
Forward
rotation
Forward
rotation
Reverse
rotation
Stop
Stop
Brake
Brake
Stop
(5) If the current detection resistor, Rs, connected to pin1, pin2, and pin3 is short-circuited, the overcurrent detection
circuit does not operate. If the output pin is short-circuited directly to V or connected directly to GND, an output
CC
short-circuit condition is detected and the output is latched in the off state. To restart the operation, turn on V
again.
DD
(6) 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.
No. A1591-7/14
STK681-332-E
I/O Functions of Each Pin
Pin Name
Pin No.
Function
IN1
16
Input pin for turning F2 and F4 ON and OFF
At low level F2: ON and F4: OFF; at high level, F2: OFF and F4: ON
Input pin for turning F1 and F3 ON and OFF
IN2
17
18
13
At low level F1: ON and F3: OFF; at high level, F1: OFF and F3: ON
Pin for turning F3 and F4 ON; At high level F31 and F42: ON
ENABLE
FAULT
ENABLE must be set Low when V is rising and falling.
DD
ENABLE must be set High to drive the motor.
Monitor pin used when either of the output short-circuit detector, overcurrent detector, or overheat detector is
activated. When the detector is activated, this pin is set low and all of F1, F2, F3 and F4 in the final stage are
latched off.
OUT1
OUT2
8, 10
4, 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.
This pin limits the peak current when motor startup.
The current setting voltage, Vref, is set to the value of 4.9 times the voltage drop of the external current
detection resistor.
Vref
19
The internal overcurrent detection level is 0.48V, so setting Vref < 2.0V is recommended.
Power system ground
GND
1, 2, 3
14
Control system ground
S.GND
Motor system supply voltage
Control system supply voltage.
V
7, 9
15
CC
V
DD
No. A1591-8/14
STK681-332-E
Technical Information
1.Configuration of each pins <Configuration of the IN1, IN2, and ENABLE input pins>
Input pins: 16, 17, 18 pin
5V
10k
100k
V
SS
The input pins of this driver all use Schmitt input. Typical specifications at Tc=25C are given below. Hysteresis
voltage is 0.3V (V a-V a).
IH IL
When rising
1.8V typ
When falling
1.5V typ
Input voltage
V
a
IH
V a
IL
Input voltage specifications are as follows.
V
V
=2.5V min
IH
=0.8V max
IL
<Configuration of the FAULT input pin>
Output pin
5V
Pin 16
V
SS
<Configuration of the Vref input pin>
To 1, 2, 3 pins
V
DD
Vref/4.9
To MOSFET
gate
Pin 19
PWM control
Amplifier
V
SS
No. A1591-9/14
STK681-332-E
[Reduced voltage detection]
(1) V
DD
The internal control IC of the driver has a function that detects reduced voltage when V
is supplied. This reduced
DD
voltage threshold level is set to 4V (typ.), and the MOSFET gate voltage specification is 5V ±5%. So, a current flow
through the output when V is rising results in the power stress to the MOSFET due to insufficient gate voltage.
DD
To prevent this power stress, set ENABLE = Low when V
supply voltage range of the MOSFET.
< 4.75V, which is outside the normal operating
DD
4Vtyp
3.8Vtyp
Control IC power (V ) rising edge
DD
Control IC power on reset
ENABLE signal input
V
, ENABLE Signals Input Timing
DD
(2) V
CC
The internal control IC of the driver has a function that detects reduced voltage when V
is supplied, to prevent
CC
insufficient internal P-channel MOSFET gate voltage. The reduced voltage detection level is set to V
= 8.8V
CC
(typ.).
8.8V
V
CC
MOSFET
off
MOSFET
off
No. A1591-10/14
STK681-332-E
2. Output short-circuit detection, Overcurrent Detection and Overheat Detection
Each detection function operates using a latch system and turns output off. To restore output operation, turn the V
power supply off and then on again to apply a power-on reset.
DD
[Output Short-circuit Detection, Overcurrent Detection]
When the output pin is simply connected to the circuit GND or V , or when the output load is short-circuited, the
CC
output short circuit detector must be activated and turn the output off.
Constant current PWM control can be performed by connecting a current detection resistor to pins 1, 2 and 3, and
setting the Vref pin voltage to less than 2.0V. In addition, when this current detection resistor voltage exceeds 0.48V
(typ.), the overcurrent detector is activated and shuts the output off.
[Overheat Detection]
Rather than directly detecting the temperature of the semiconductor device, overheat detection detects the temperature
of the aluminum substrate (144C typ).
Within the allowed operating range of I 1 (6.1A) recommended in the specifications, if a heat sink attached for the
O
purpose of reducing the operating substrate temperature, Tc, comes loose, the semiconductor can operate without
breaking.
However, we cannot guarantee operations without breaking in the case of operation other than those recommended,
such as operations at a current exceeding I H max (6.1A) that occurs before overcurrent detection is activated.
O
3. Mitigated Curve of Package Power Loss, PdPK, vs. Ambient Temperature, Ta
Package power loss, PdPK, refers to the average internal power loss, PdAV, allowable without a heat sink.
The figure below represents the allowable power loss, PdPK, vs. fluctuations in the ambient temperature, Ta.
Power loss of up to 2.8W is allowable at Ta=25C, and of up to 1.5W at Ta=60C.
Allowable power dissipation, PdPK (no heat sink) - Ambient temperature, Ta
PdPK - Ta
3.0
2.5
2.0
1.0
1.5
0.5
0
0
20
40
60
80
100
120
Ambient temperature, Ta - C
ITF02714
No. A1591-11/14
STK681-332-E
4. Data
Vsat1, Vsat2 - I
O
1600
1400
1200
1000
800
V
=5.0V
DD
Tc=25C
600
400
200
0
0
1
2
3
4
5
6
7
8
9
10 11 12
Output current, I - A(DC)
O
ITF02715
Vdf - I
O
1.1
1.0
0.9
0.8
0.7
Tc=25C
0.6
0.5
0
1
2
3
4
5
6
7
8
9
10 11 12
Output current, I - A(DC)
O
ITF02716
No. A1591-12/14
STK681-332-E
5. Other Notes on Use
In addition to the “Notes” indicated in the Sample Application Circuit, care should also be given to the following
contents during use.
(1) Allowable operating range
Operation of this product assumes use within the allowable operating range. If a supply voltage or an input voltage
outside the allowable operating range is applied, an overvoltage may damage the internal control IC or the MOSFET.
If a voltage application mode that exceeds the allowable operating range is anticipated, connect a fuse or take other
measures to cut off power supply to the product.
(2) Input pins
If the input pins are connected directly to the PC board connectors, electrostatic discharge or other overvoltage
outside the specified range may be applied from the connectors and may damage the product. Current generated by
this overvoltage can be suppressed to effectively prevent damage by inserting 100 to 1k resistors in lines
connected to the input pins.
Take measures such as inserting resistors in lines connected to the input pins
(3) Power connectors
If the motor power supply V
when the product is operated, such as for test purposes, an overcurrent flows through the V
CC
C1, to the parasitic diode between the V
pin block of the internal control IC.
is applied by mistake without connecting the GND part of the power connector
decoupling capacitor,
of the internal control IC and GND, and may damage the power supply
CC
DD
Always connect the GND pin before supplying V
.
CC
7
8
10
9
4
6
5V
Reg.
15
V
DD
Logic level Control Block
F2
F1
F3
IN1
IN2
V
CC
ENABLE
24V
C1
Reg.
F4
FAULT
Vref
1
2
3
V
SS
S.GND
14
Open
Over-current path
(4) Input Signal Lines
1) Do not use an IC socket to mount the driver, and instead solder the driver directly to the PC board to minimize
fluctuations in the GND potential due to the influence of the resistance component and inductance component of
the GND pattern wiring.
2) To reduce noise due to electromagnetic induction to small signal lines, do not design small signal lines (sensor
signals, 5V or 3.3V power supply signal lines) that run parallel near the motor output lines OUT1 and OUT2.
3) Pins 5, 11 and 12 of this product are N.C pins. Do not connect any wiring to these pins.
No. A1591-13/14
STK681-332-E
(5) When mounting multiple drivers on a single PC board
When mounting multiple drivers on a single PC board, the GND design should mount a V
decoupling capacitor,
CC
C1, for each driver to stabilize the GND potential of the other drivers. The key wiring points are as follows.
24V
5V
15 7 9
16
15 7 9
16
15 7 9
16
Motor
3
Motor
1
Motor
2
Input
Signals
Input
Signals
Input
Signals
17
17
17
IC1
IC3
IC2
18
C1 for IC3
C1 for IC2
18
18
C1 for IC1
1
2
3
1
2
3
1
2
3
19
14
19 14
19
14
GND
GND
Short
Thick and short
Thick
ORDERING INFORMATION
Device
Package
Shipping (Qty / Packing)
20 / Fan-Fold
SIP-19
(Pb-Free)
STK681-332-E
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number
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warranty, representation or guarantee regarding the suitabilityof its products for any particular purpose, nor does SCILLC assume any liability arising out of the
application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental
damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical
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PS No. A1591-14/14
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