ATMEL U2010B_10

Features
•
•
•
•
•
•
•
•
•
•
Full-wave Current Sensing
Mains Supply Variation Compensated
Programmable Load-current Limitation with Over- and High-load Output
Variable Soft Start
Voltage and Current Synchronization
Automatic Retriggering Switchable
Triggering Pulse Typically 125 mA
Internal Supply-voltage Monitoring
Current Requirement ≤ 3 mA
Temperature-compensated Reference Voltage
Phase-control
IC with Current
Feedback and
Overload
Protection
Applications
• Advanced Motor Control
• Grinder
• Drilling Machine
1. Description
The U2010B is designed as a phase-control circuit in bipolar technology for motor
control applications with load-current feedback and overload protection. It enables
load-current detection and has a soft-start function as well as reference voltage
output.
Figure 1-1.
Block Diagram
15
Limiting
detector
14
Overload
13
12
Mains voltage
compensation
Voltage
detector
Current
detector
11
100%
Output
Phase
control unit
ϕ = f(V4)
-
1
Supply
voltage
High load
Automatic
retriggering
2
70%
Programmable
overload
protection
+
Full wave
rectifier
16
Voltage
monitoring
1
U2010B
Load
current
detector
2
Level
shift
3
Soft
start
4
5
6
7
10
GND
A
αmax
B
Autostart
9
C
Imax
U2010B
Reference
voltage
8
4766C–INDCO–04/10
Figure 1-2.
Block Diagram with External Circuit
230V ~
18 kΩ/2W
D1
D3
LED
R1
αmax
R2
330 kΩ
R8
470 kΩ
VS
Load
15
Limiting
detector
14
Voltage
detector
Overload
13
12
22 µF +
Mains voltage
compensation
Current
detector
R3
100%
Output
-
1
+
2
Full wave
rectifier
16
1
Load
current
detector
2
Level
shift
3
Soft
start
4
5
6
V(R6) = ± 250 mV
3.3 kΩ
GND
Mode
A
αmax
B
Autostart
C
A
9
B
C
S1
7
U2010B
Reference
voltage
8
+ C2
0.1 µF
C5
R5
10
Imax
Voltage
monitoring
3.3 kΩ
R6
70%
Programmable
overload
protection
180Ω
R4
Supply
voltage
High load
Automatic
retriggering
Phase
control unit
ϕ = f(V4)
C1
11
C3
C4
10 nF
0.15 µF
R11
1 MΩ
4.7 µF
Overload
threshold
R14
R10
P1
50 kΩ
Set point
C7
+ 1 µF
100 kΩ
Load current
compensation
2
R7
U2010B
4766C–INDCO–04/10
U2010B
2. Pin Configuration
Figure 2-1.
Pinning DIP16/SO16
ISENSE
1
16 OUTPUT
ISENSE
2
15 VSYNC
Cϕ
3
14 VRϕ
CONTROL
4
13 OVERLOAD
U2010B
Table 2-1.
COMP
5
12 HIGH LOAD
ILOAD
6
11 VS
CSOFT
7
10 GND
VREF
8
9
MODE
Pin Description
Pin
Symbol
Function
1
ISENSE
Load current sensing
2
ISENSE
Load current sensing
3
Cϕ
Ramp voltage
4
CONTROL
Control input
5
COMP
Compensation output
6
ILOAD
Load current limitation
7
CSOFT
Soft start
8
VREF
Reference voltage
9
MODE
Mode selection
10
GND
11
VS
12
HIGH LOAD
High load indication
13
OVERLOAD
Overload indication
14
VRϕ
Ramp current adjust
15
VSYNC
16
OUTPUT
Ground
Supply voltage
Voltage synchronization
Trigger output
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4766C–INDCO–04/10
3. General Description
3.1
Mains Supply
The U2010B contains voltage limiting and can be connected with the mains supply via D1 and
R1. Supply voltage – between pin 10 and pin 11 – is smoothed by C1.
In the case of V6 ≤ 70% of the overload threshold voltage, pins 11 and 12 are connected internally whereby Vsat ≤ 1.2 V. When ⏐ V6⏐ ≥ ⏐ VT70⏐ , the supply current flows across D3.
The series resistance R1 can be calculated as follows:
V mains – V Smax
R 1max = -------------------------------------2 × I tot
where:
3.2
Vmains
= Mains supply voltage
VSmax
= Maximum supply voltage
Itot
= Total current consumption = ISmax + Ix
ISmax
= Maximum current consumption of the IC
Ix
= Current consumption of the external components
Voltage Monitoring
When the voltage is built up, uncontrolled output pulses are avoided by internal voltage monitoring. Apart from that, all latches in the circuit (phase control, load limit regulation) are reset and
the soft-start capacitor is short-circuited. This guarantees a specified start-up behavior each time
the supply voltage is switched on or after short interruptions of the mains supply. Soft start is initiated after the supply voltage has been built up. This behavior guarantees a gentle start-up for
the motor and automatically ensures the optimum run-up time.
3.3
Phase Control
The function of the phase control is mainly identical to the well-known IC U211B. The phase
angle of the trigger pulse is derived by comparing the ramp voltage V3, which is mains-synchronized by the voltage detector, with the set value on the control input, pin 4. The slope of the
ramp is determined by Cϕ and its charging current Iϕ. The charging current can be varied using
Rϕ at pin 14. The maximum phase angle, αmax, can also be adjusted by using Rϕ (minimum current flow angle ϕmin), see Figure 7-1 on page 10.
When the potential on pin 3 reaches the set point level of pin 4, a trigger pulse width, tp, is determined from the value of Cϕ (tp = 9 µs/nF). At the same time, a latch is set with the output pulse
as long as the automatic retriggering has not been activated. When this happens, no more
pulses can be generated in that half cycle. The control input at pin 4 (with respect to pin 10) has
an active range from V8 to -1 V. When V4 = V8, then the phase angle is at its maximum, αmax, i.e.,
the current flow angle is minimum. The minimum phase angle, αmin, is set with V4 ≥ -1 V.
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U2010B
4766C–INDCO–04/10
U2010B
3.4
Automatic Retriggering
The current-detector circuit monitors the state of the triac after triggering by measuring the voltage drop at the triac gate. A current flow through the triac is recognized when the voltage drop
exceeds a threshold level of typically 40 mV.
If the triac is quenched within the relevant half-wave after triggering (for example owing to low
load currents before or after the zero crossing of the current wave, or for commutator motors,
owing to brush lifters), the automatic retriggering circuit ensures immediate retriggering, if necessary with a high repetition rate, tpp/tp, until the triac remains reliably triggered.
3.5
Current Synchronization
Current synchronization fulfils two functions:
– Monitoring the current flow after triggering.
In case the triac extinguishes again or does not switch on, automatic triggering is
activated until the triggering is successful.
– Avoiding triggering due to an inductive load.
In the case of inductive load operation, the current synchronization ensures that in
the new half wave, no pulse will be enabled as long as there is a current available
from the previous half wave, which flows from the opposite polarity to the actual
supply voltage.
The current synchronization as described above is a special feature of the U2010B. The device
evaluates the voltage at the pulse output between gate and reference electrode of the triac. As a
result, no separate current synchronization input with specified series resistance is necessary.
3.6
Voltage Synchronization with Mains Voltage Compensation
The voltage detector synchronizes the reference ramp with the mains supply voltage. At the
same time, the mains-dependent input current at pin 15 is shaped and rectified internally. This
current activates the automatic retriggering and at the same time is available at pin 5. By suitable dimensioning, it is possible to obtain the specified compensation effect. Automatic
retriggering and mains voltage compensation are not activated until ⏐ V15 - 10⏐ increases to 8 V.
The resistance Rsync. defines the width of the zero voltage cross over pulse, synchronization current, and hence the mains supply voltage compensation current.
Figure 3-1.
Suppression of Mains Voltage Compensation and Automatic Retrigger
Mains
R2
15
U2010B
2x
C6V2
10
If the mains voltage compensation and the automatic retriggering are not required, both functions can be suppressed by limiting ⏐ V15 - 10⏐ ≤ 7 V, see Figure 3-1.
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4766C–INDCO–04/10
3.7
Load-current Compensation
The circuit continuously measures the load current as a voltage drop at resistance R6. The evaluation and use of both half waves results in a quick reaction to load-current change. Due to the
voltage at resistance R6, there is a difference between both input currents at pins 1 and 2. This
difference controls the internal current source, whose positive current values are available at
pins 5 and 6. The output current generated at pin 5 contains the difference from the load-current
detection and from the mains voltage compensation, see Figure 1-2 on page 2.
The efficient impedance of the set-point network generates a voltage at pin 4. A current, flowing
out of pin 5 through R 10, modulates this voltage. An increase of mains voltage causes the
increase of control angle α, an increase of load current results in a decrease in the control angle.
This avoids a decrease in revolution by increasing the load as well as an increase of revolution
by the increment of the mains supply voltage.
3.8
Load-current Limitation
The total output load current is available at pin 6. It results in a voltage drop across R11. When
the potential of the load current reaches about 70% of the threshold value (VT70), i.e., about 4.35
V at pin 6, it switches the high-load comparator and opens the switch between pins 11 and 12.
By using an LED between these pins (11 and 12), a high-load indication can be realized.
If the potential at pin 6 increases to about 6.2 V (= VT100), it switches the overload comparator.
The result is programmable at pin 9 (operation mode).
3.8.1
6
Mode Selection
a)
αmax (V9 = 0)
In this mode of operation, pin 13 switches to -VS (pin 11) and pin 6 to GND
(pin 10) after V6 has reached the threshold VT100. A soft-start capacitor is then
shorted and the control angle is switched to αmax. This position is maintained
until the supply voltage is switched off. The motor can be started again with the
soft-start function when the power is switched on again. As the overload condition
switches pin 13 to pin 11, it is possible to use a smaller control angle, αmax, by
connecting a further resistance between pins 13 and 14.
b)
Auto start (pin 9 – open), see Figure 7-8 on page 12
The circuit behaves as described above, with the exception that pin 6 is not
connected to GND. If the value of V6 decreases to 25% of the threshold
value (VT25), the circuit becomes active again with soft start.
c)
Imax (V9 = V8), see Figure 7-10 on page 13
When V6 has reached the maximum overload threshold value (i.e., V6 = VT100),
pin 13 is switched to pin 8 (VRef) through the resistance R (= 2 kΩ) without the
soft-start capacitor discharging at pin 7. With this mode of operation, direct
load-current control (Imax) is possible.
U2010B
4766C–INDCO–04/10
U2010B
4. Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Reference point pin 10, unless otherwise specified.
Parameters
Pin
Symbol
Value
Unit
11
-IS
30
mA
11
-is
100
mA
15
±IsyncV
5
mA
15
±isyncV
5
mA
4, 8
-VI
0 - V8
V
Input current
4
±II
500
µA
Charging current
14
-Ij†max
0.5
mA
7, 8
-VI
0 - V8
V
16
+VI
-VI
2
V11
V
V
8
I0
10
mA
8
I0
30
mA
Input currents
1, 2
±Ii
1
mA
Input voltages
5, 6
- Vi
0 - V8
V
Overload output
13
IL
1
mA
High-load output
t ≤10 µs
12
IL
30
mA
12
IL
100
mA
Tstg
-40 to +125
°C
Sink current
t ≤10 µs
Synchronous currents
t ≤10 µs
Phase Control
Control voltage
Soft Start
Input voltage
Pulse Output
Input voltage
Reference Voltage Source
Output current
t ≤10 µs
Load-current Sensing
Storage temperature range
Junction temperature range
Tj
125
°C
Ambient temperature range
Tamb
-10 to +100
°C
Symbol
Value
Unit
RthJA
RthJA
RthJA
120
180
100
K/W
K/W
K/W
5. Thermal Resistance
Parameters
Junction ambient
DIP16
SO16 on p.c.
SO16 on ceramic
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4766C–INDCO–04/10
6. Electrical Characteristics
Parameters
Test Conditions
Supply
Pin
Symbol
Min.
-VS
-VS
14.5
14.6
Typ.
Max.
Unit
16.5
16.8
V
V
3.6
mA
9.2
9.1
V
V
11
Supply-voltage limitation
-IS = 3.5 mA
-IS = 30 mA
Current requirement
-VS = 13.0 V
Reference Voltage Source
1, 2, 8 and
15 open
-IS
8
Reference voltage
IL = 10 µA
IL = 2.5 mA
-VRef
-VRef
Temperature coefficient
IS = 2.5 mA
IS = 10 µA
TCVRef
TCVRef
-0.004
+0.006
-VSon
11.3
12.3
V
2
mA
8.5
9.0
V
30
µA
100
µA
2.05
V
Voltage Monitoring
8.6
8.4
8.9
8.8
%/K
%/K
11
Turn-on threshold
Phase Control Synchronization
15
Input current
Voltage sync.
±IsyncV
0.15
Voltage limitation
±IL = 2 mA
±VsyncV
8.0
Input current
Current synchronization
16
±IsyncI
3
14
-Iϕ
1
1.85
Reference Ramp, see Figure 7-1 on page 10
Charging current
Start voltage
3
-Vmax
Temperature coefficient of start
voltage
3
TCR
3
-Vmin
Rϕ - reference voltage
Final voltage
Iϕ = 10 µA
11, 14
VRϕ
Temperature coefficient
Iϕ = 10 µA
Iϕ = 1 µA
14
TCVRϕ
TCVRϕ
Pulse output current
V16 = -1.2 V,
Figure 7-2 on page 10
16
I0
Output pulse width
VS = Vlimit
C3 = 3.3 nF, see Figure 7-3 on
page 10
16
tp
1.95
-0.003
%/K
(V8 ± 200 mV)
0.96
1.02
1.10
0.03
0.06
100
125
V
%/K
%/K
150
30
mA
µs
Automatic Retriggering
Repetition rate
I15 ≥ 150 µA
Threshold voltage
16
Soft Start, see Figure 7-4 and Figure 7-5 on page 11
7
tpp
3
±VI
20
5
7.5
tp
60
mV
Starting current
V7 = V8
-I0
5
10
15
µA
Final current
V7-10 = -1V
-I0
15
25
40
µA
+I0
0.5
+I0
0.2
Gi
14
Discharge current
Output current
4
Mains Voltage Compensation, see Figure 7-6 on page 11
Transfer gain
I15/I5
Output offset current
V(R6) = V15 = V5 = 0
8
mA
2
mA
15
15/5
(1 and 2
open)
±I0
17
20
2
µA
U2010B
4766C–INDCO–04/10
U2010B
6. Electrical Characteristics (Continued)
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
GI
0.28
0.32
0.37
µA/mV
5, 6 , 7, 8
-I0
0
3
6
µA
1, 2
-VRef
300
400
mV
250
mV
Load-current Detection, R1 = R2 = 3 kΩ, V15 = 0, V5 = V6 = V8, see Figure 7-7 on page 12
Transfer gain
I5/150 mV, I6/150 mV
Output offset currents
Reference voltage
I1, I2 = 100 µA
Shunt voltage amplitude
See Figure 1-2 on page 2
Load-current Limitation
±V(R6)
6, 7, 8
High load switching
Threshold VT70
Figure 7-9 on page 12
VT70
4
4.35
4.7
V
Overload switching
Threshold VT100
Figure 7-10 on page 13
Figure 7-11 on page 13
VT100
5.8
6.2
6.6
V
Restart switching
Threshold VT25
Figure 7-8 on page 12
VT25
1.25
1.55
1.85
V
1
µA
R0
2
4
8
kΩ
-V9
3.8
4.3
4.7
V
-I9
I9
5
5
10
10
20
20
µA
µA
Vsat
Vlim
0.5
7.0
0.75
7.4
1.0
7.8
V
V
Input current
Enquiry mode
Output impedance
Switching mode
Programming Input, see Figure 1-2 on page 2
Input voltage - auto-start
Input current
9
9 open
V9 = 0 (amax)
V9 = V8 (Imax)
High Load Output, VT70, see Figure 7-9 on page 12, I12 = -3mA
Saturation voltages
Ii
11, 12
V6-8 ≤VT70
V6-8 ≥ VT70
Overload Output, VT100, V9 = Open or V9 = V10, see Figure 7-10 on page 13
Leakage current
V6-8 ≤VT25, V13 = (V11+1)V
Saturation voltages
V6-8 ≥ VT100, I13 = 10 µA
Output current, maximum load
13
Ilkg
0.5
µA
11, 12, 13
Vsat
0.1
V
V9 = V8,
see Figure 7-10 on page 13
13
I13
1
mA
Leakage current
V6 ≤VT100
13
Ilkg
4
µA
Output impedance
Open collector, V6 ≥ VT100
13
R0
8
kΩ
Saturation voltage
V6-8 ≥ VT100, I13 = 10 µA
13
V13-8
2
4
100
mV
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4766C–INDCO–04/10
7. Diagrams
Figure 7-1.
Ramp Control
Phase Angle α (°)
250
200
33 nF 10 nF
6.8 nF 4.7 nF
3.3 nF
2.2 nF
150
100
Cϕt = 1.5 nF
50
0
0
200
400
600
800
1000
Rϕ (R8) (kΩ)
Figure 7-2.
Pulse Output
120
VGT = -1.2V
100
IGT (mA)
80
60
40
20
0
0
200
400
600
800
1000
RGT (Ω)
Figure 7-3.
Output Pulse Width
400
Δtp/ΔCϕ = 9 µs/nF
tp (µs)
300
200
100
0
0
10
20
30
Cϕ = (nF)
10
U2010B
4766C–INDCO–04/10
U2010B
Figure 7-4.
Soft-start Charge Current
50
VS = 13V
V6 = V8
I7 (µA)
40
30
Reference Point Pin 8
20
10
0
0
2.5
5.0
7.5
10
V7 (V)
Figure 7-5.
Soft-start Characteristic
12
Reference Point Pin 8
1 µF
10
I7 (V)
8
2.2 µF
4.7 µF
6
Cϕ = 10 µF
VS = -13V
4
V6 = V8
2
0
0
2
4
6
8
10
t (s)
Figure 7-6.
Mains Voltage Compensation
0
I5 (µA)
40
80
120
160
Pins 1 and 2 open
VS = -13V
200
-2
-1
Reference Point
Pin 10
0
1
2
I15 (mA)
11
4766C–INDCO–04/10
Figure 7-7.
Load-current Detection
200
160
I5 (µA)
Reference Point
Pin 8
V6 = VRef = V8
VS = -13V
V15 = V10 = 0V
120
80
40
0
-400
-200
0
200
400
V(R6) (mV)
Figure 7-8.
Restart Switching Auto Start Mode
20
VS = -13V
Pin 9 open
16
-V13-10 (V)
Reference Points: V13 = pin 10, V6 = pin 8
12
8
4
VT25
VT25
0
0
2
4
6
8
10
V6-8 (V)
Figure 7-9.
High Load Switching (70%)
10
I12 = 3 mA
V11-12 (V)
8
6
4
Reference Point Pin 8
2
VT170
0
0
1
2
3
4
5
6
7
V6 (V)
12
U2010B
4766C–INDCO–04/10
U2010B
Figure 7-10. Overload Switching
12
VS = -13V
V9 = V8
10
Reference Points:
V13 = pin 10, V6 = pin 8
-V13-10 (V)
8
6
4
2
VT100
0
0
2
4
6
8
10
t (s)
Figure 7-11. Load Limitation
20
VS = -13V
V9 = V10
16
V13-10 (V)
Reference Points: V13 = pin 10, V6 = pin 8
12
8
4
VT100
0
0
2
4
6
8
10
40
50
V6-8 (V)
Figure 7-12. Power Dissipation of R1
10
Pv (W)
8
6
4
2
0
0
10
20
30
R1 (kΩ)
13
4766C–INDCO–04/10
Figure 7-13. Power Dissipation of R1 According to Current Consumption
10
8
Pv (mA)
VM = 230V ~
6
4
2
0
0
3
6
9
12
15
IS (mA)
Figure 7-14. Maximum Resistance of R1
100
R1max (kΩ)
80
60
VM = 230V ~
40
20
0
0
10
20
30
40
50
IS (mA)
14
U2010B
4766C–INDCO–04/10
U2010B
Figure 7-15. Application Circuit
230V ~
18 kΩ/2W
D1
R1
L
R8
470 kΩ
LED
αmax
22 µF +
R9
VS
Load
15
Limiting
detector
14
Overload
13
12
Mains voltage
compensation
Voltage
detector
Current
detector
R3
100%
Output
-
1
+
2
70%
Full wave
rectifier
16
1
Load
current
detector
2
Level
shift
3
Soft
start
4
10
GND
A
αmax
B
Autostart
A
9
B
S1
C
C
Imax
R12
220 kΩ
Voltage
monitoring
3.3 kΩ
R6
Supply
voltage
Programmable
overload
protection
180Ω
R4
11
High load
Automatic
retriggering
Phase
control unit
ϕ = f(V4)
C1
αmax
1 MΩ
R2
330 kΩ
D3
5
6
7
U2010B
Reference
voltage
8
T1
D2
V(R6) = ± 250 mV
+ C2
0.1 µF
C5
R5
3.3 kΩ
C3
C4
10 nF
0.15 µF
R11
1 MΩ
R14
R10
N
Load current
compensation 100 kΩ
1N4148
4.7 µF
Overload
threshold
P1
R7
8.2 kΩ
50 kΩ
Set point
C7
C6
+ 1 µF
1 µF +
R13
100 kΩ
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4766C–INDCO–04/10
8. Ordering Information
Extended Type Number
Package
U2010B-xY
Remarks
DIP16
Tube, Pb-free
U2010B-xFPY
SO16
Tube, Pb-free
U2010B-xFPG3Y
SO16
Taped and reeled, Pb-free
9. Package Information
Package DIP16
Dimensions in mm
7.82
7.42
20.0 max
4.8 max
6.4 max
0.5 min 3.3
1.64
1.44
0.58
0.48
2.54
0.39 max
9.75
8.15
17.78
Alternative
16
9
technical drawings
according to DIN
specifications
1
16
8
U2010B
4766C–INDCO–04/10
U2010B
Package: SO 16
Dimensions in mm
5±0.2
9.9±0.1
0.1+0.15
1.4
0.2
3.7±0.1
0.4
1.27
3.8±0.1
6±0.2
8.89
16
9
technical drawings
according to DIN
specifications
1
8
Drawing-No.: 6.541-5031.02-4
Issue: 1; 15.08.06
Pin 1 identity
10. Revision History
Please note that the following page numbers referred to in this section refer to the specific revision
mentioned, not to this document.
Revision No.
History
4766C-INDCO-04/10
• Put datasheet in the newest temlate
• Pb-free logo on page 1 deleted
• Figure 2-1 “Pinning DIP16/SO16” on page 3 changed
4766B-INDCO-08/05
• Put datasheet in the newest template
• Pb-free logo on page 1 added
• Section 8 “Ordering Information” on page 16 changed
17
4766C–INDCO–04/10
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