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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
Applications
* Advanced Motor Control * Grinder * Drilling Machine
Phase-control IC with Current Feedback and Overload Protection U2010B
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 Voltage detector 14 Overload Mains voltage compensation High load Supply voltage 10 G N D 13 12 11
Automatic retriggering Phase control unit = f (V4) Output 1 2 +
100%
70%
A max
Current detector 16 Pulse output 1 Load current detector 2
Full wave rectifier
B Programmable Autostart overload protection C Imax
9
Voltage monitoring Level shift 3 4 5 6 Soft start 7
U2010B
Reference voltage 8
Rev. 4766B-INDCO-10/05
Figure 1-2.
2
230 V ~ R1 R2 330 k max VS 13 12 Supply voltage 10 GND 11 Overload Limiting detector High load Voltage detector Mains voltage compensation C1 22 F Load 15 14 R8 470 k LED 18 k/2 W D1 D3 Automatic retriggering 100% Output Current detector 1 2 Full wave rectifier R3 16 Voltage monitoring 1 Level shift Load current detector 180 70% A max 9
U2010B
Block Diagram with External Circuit
Mode
-
+
Phase control unit = f(V4)
Programmable overload protection
B Autostart C I max
A B C S1
U2010B
R4 3.3 k 2 3 4
Soft start 5 C5 0.1 F 0.15 F 6 7
Reference voltage 8
R6 R5 3.3 k C3 10 nF
^ V (R6) = 250 mV
R11 1 M
C2 4.7 F Overload threshold C4 R14 P1 R10 50 k 100 k Load current compensation Set point C7 1 F R7
4766B-INDCO-10/05
U2010B
2. Pin Configuration
Figure 2-1. Pinning DIP16/SO16
ISENSE 1 ISENSE 2 C 3 16 OUTPUT 15 VSYNC 14 13 12 11 10 9 VR
CONTROL 4
U2010B
COMP ILOAD CSOFT VREF 5 6 7 8
OVERLOAD HIGH LOAD VS GND
MODE
Table 2-1.
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Pin Description
Symbol ISENSE ISENSE C CONTROL COMP ILOAD CSOFT VREF MODE GND VS HIGH LOAD OVERLOAD VR VSYNC OUTPUT Function Load current sensing Load current sensing Ramp voltage Control input Compensation output Load current limitation Soft start Reference voltage Mode selection Ground Supply voltage High load indication Overload indication Ramp current adjust Voltage synchronization Trigger output
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4766B-INDCO-10/05
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 x I tot
where: Vmains VSmax Itot ISmax Ix = Mains supply voltage = Maximum supply voltage = Total current consumption = ISmax + Ix = Maximum current consumption of the IC = Current consumption of the external components
3.2
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 C and its charging current I. The charging current can be varied using R at pin 14. The maximum phase angle, max, can also be adjusted by using R (minimum current flow angle min), 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 C (tp = 9 s/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, max, i.e., the current flow angle is minimum. The minimum phase angle, min, is set with V4 -1 V.
4
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4766B-INDCO-10/05
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 2x C6V2 10 U2010B
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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4766B-INDCO-10/05
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 , 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
Mode Selection a)
max (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 max. 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, max, by connecting a further resistance between pins 13 and 14. 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. 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 k) without the soft-start capacitor discharging at pin 7. With this mode of operation, direct load-current control (Imax) is possible.
b)
c)
6
U2010B
4766B-INDCO-10/05
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 Sink current t 10 s Synchronous currents t 10 s Phase Control Control voltage Input current Charging current Soft Start Input voltage Pulse Output Input voltage Reference Voltage Source Output current t 10 s Load-current Sensing Input currents Input voltages Overload output High-load output t 10 s Storage temperature range Junction temperature range Ambient temperature range 1, 2 5, 6 13 12 12 Ii - Vi IL IL IL Tstg Tj Tamb 1 0 - V8 1 30 100 -40 to +125 125 -10 to +100 mA V mA mA mA C C C 8 8 I0 I0 10 30 mA mA 16 +VI -VI 2 V11 V V 7, 8 -VI 0 - V8 V 4, 8 4 14 -VI II -Ijmax 0 - V8 500 0.5 V A mA Pin 11 11 15 15 Symbol -IS -is IsyncV isyncV Value 30 100 5 5 Unit mA mA mA mA
5. Thermal Resistance
Parameters Junction ambient DIP16 SO16 on p.c. SO16 on ceramic Symbol RthJA RthJA RthJA Value 120 180 100 Unit K/W K/W K/W
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4766B-INDCO-10/05
6. Electrical Characteristics
Parameters Supply Supply-voltage limitation Current requirement Reference Voltage Source Reference voltage Temperature coefficient Voltage Monitoring Turn-on threshold Phase Control Synchronization Input current Voltage limitation Input current Charging current Start voltage Temperature coefficient of start voltage Final voltage R - reference voltage Temperature coefficient Pulse output current I = 10 A I = 10 A I = 1 A V16 = -1.2 V, Figure 7-2 on page 10 VS = Vlimit C3 = 3.3 nF, see Figure 7-3 on page 10 I15 150 A 16 7 -I0 -I0 +I0 4 15 15/5 (1 and 2 open) Gi I0 14 17 20 2 A +I0 5 15 0.5 0.2 2 10 25 15 40 A A mA mA V7 = V8 V7-10 = -1V Voltage sync. IL = 2 mA Current synchronization 16 14 3 3 3 11, 14 14 16 15 IsyncV VsyncV IsyncI -I -Vmax TCR -Vmin VR TCVR TCVR I0 tp 100 0.96 0.15 8.0 3 1 1.85 1.95 -0.003 (V8 200 mV) 1.02 0.03 0.06 125 150 1.10 V %/K %/K mA 8.5 2 9.0 30 100 2.05 mA V A A V %/K IL = 10 A IL = 2.5 mA IS = 2.5 mA IS = 10 A 11 -VSon 11.3 12.3 V -IS = 3.5 mA -IS = 30 mA -VS = 13.0 V 1, 2, 8 and 15 open 8 -VRef -VRef TCVRef TCVRef 8.6 8.4 8.9 8.8 -0.004 +0.006 9.2 9.1 V V %/K %/K Test Conditions Pin 11 -VS -VS -IS 14.5 14.6 16.5 16.8 3.6 V V mA Symbol Min. Typ. Max. Unit
Reference Ramp, see Figure 7-1 on page 10
Output pulse width Automatic Retriggering Repetition rate Threshold voltage
16
30
s
tpp VI
3 20
5
7.5 60
tp mV
Soft Start, see Figure 7-4 and Figure 7-5 on page 11 Starting current Final current Discharge current Output current Mains Voltage Compensation, see Figure 7-6 on page 11 Transfer gain Output offset current I15/I5 V(R6) = V15 = V5 = 0
8
U2010B
4766B-INDCO-10/05
U2010B
6. Electrical Characteristics (Continued)
Parameters Transfer gain Output offset currents Reference voltage Shunt voltage amplitude Load-current Limitation High load switching Threshold VT70 Figure 7-9 on page 12 Threshold VT100 Figure 7-10 on page 13 Figure 7-11 on page 13 Threshold VT25 Figure 7-8 on page 12 Enquiry mode Switching mode 9 9 open V9 = 0 (amax) V9 = V8 (Imax) 11, 12 Vsat Vlim 13 11, 12, 13 13 13 13 13 Ilkg Vsat I13 Ilkg R0 V13-8 2 4 100 0.5 7.0 0.75 7.4 1.0 7.8 0.5 0.1 1 4 8 V V A V mA A k mV V6-8 VT70 V6-8 VT70 V6-8 VT25, V13 = (V11+1)V V6-8 VT100, I13 = 10 A V9 = V8, see Figure 7-10 on page 13 V6 VT100 Open collector, V6 VT100 V6-8 VT100, I13 = 10 A -V9 -I9 I9 3.8 5 5 4.3 10 10 4.7 20 20 V A A I1, I2 = 100 A See Figure 1-2 on page 2 6, 7, 8 VT70 VT100 VT25 Ii R0 2 4 4 4.35 4.7 V Test Conditions I5/150 mV, I6/150 mV 5, 6 , 7, 8 1, 2 Pin Symbol GI -I0 -VRef V(R6) Min. 0.28 0 300 Typ. 0.32 3 Max. 0.37 6 400 250 Unit A/mV A mV mV Load-current Detection, R1 = R2 = 3 k, V15 = 0, V5 = V6 = V8, see Figure 7-7 on page 12
Overload switching
5.8
6.2
6.6
V
Restart switching Input current Output impedance Input voltage - auto-start Input current
1.25
1.55
1.85 1 8
V A k
Programming Input, see Figure 1-2 on page 2
High Load Output, VT70, see Figure 7-9 on page 12, I12 = -3mA Saturation voltages
Overload Output, VT100, V9 = Open or V9 = V10, see Figure 7-10 on page 13 Leakage current Saturation voltages Output current, maximum load Leakage current Output impedance Saturation voltage
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4766B-INDCO-10/05
7. Diagrams
Figure 7-1. Ramp Control
250
Phase Angle ()
200
33 nF
10 nF
6.8 nF
4.7 nF
3.3 nF
2.2 nF
150
100 C/t = 1.5 nF 50
0 0 200 400 600 800 1000
R (R8) (k)
Figure 7-2.
Pulse Output
120 100 80
IGT (mA)
VGT = -1.2 V
60 40 20 0 0 200 400 600 800 1000 RGT ()
Figure 7-3.
Output Pulse Width
400 tp/ C = 9 s/nF 300
tp = (s)
200
100
0 0 10 C = (nF) 20 30
10
U2010B
4766B-INDCO-10/05
U2010B
Figure 7-4. Soft-start Charge Current
50 VS = 13 V V6 = V8 40
I7 (A)
30 Reference Point Pin 8 20
10
0 0 2.5 5.0 V7 (V) 7.5 10
Figure 7-5.
Soft-start Characteristic
12 Reference Point Pin 8 10 8
V7 (V)
1 F
2.2 F
4.7 F
6 4 2 0 0 2 4
C = 10 F VS = -13 V V6 = V8
6 t (s)
8
1 0
Figure 7-6.
Mains Voltage Compensation
0
40
I5 (A)
80
120
160 Pins 1 and 2 open VS = -13 V -2 -1 0 I15 (mA) Reference Point Pin 10 1 2
200
11
4766B-INDCO-10/05
Figure 7-7.
Load-current Detection
200 V6 = VRef = V8 VS = -13 V V15 = V10 = 0 V Reference Point Pin 8
160
I5 (A)
120
80
40
0 -400 -200 0 200 400 V(R6)(mV)
Figure 7-8.
Restart Switching Auto Start Mode
20 VS = -13 V 16
-V13-10 (V)
Pin 9 open Reference Points: V13 = pin 10, V 6 = pin 8
12
8
4 VT25 0 0 2 4 V6-8 (V) 6 VT100 8 1 0
Figure 7-9.
High Load Switching (70%)
10 I12 = -3 mA 8
V11-12 (V)
6
4 Reference point, pin 8 2 VT170 0 0 1 2 3 V6 (V) 4 5 6 7
12
U2010B
4766B-INDCO-10/05
U2010B
Figure 7-10. Overload Switching
12 10 8 6 4 2 VT100 0 0 2 4 t (s) 6 8 1 0 VS = -13 V V9 = V8
-V13-10(V)
Reference Points: V13 = pin 10, V6 = pin 8
Figure 7-11. Load Limitation
20 VS = -13 V V9 = V10 16 V13-10 (V) Reference Points: V13 = pin 10, V6 = pin 8
12
8
4 VT100 0 0 2 4 6 V6-8 (V) 8 1 0
Figure 7-12. Power Dissipation of R1
10
8
PV (W)
6
4
2
0 0 10 20 R1 (k) 30 40 50
13
4766B-INDCO-10/05
Figure 7-13. Power Dissipation of R1 According to Current Consumption
10
8 VM = 230 V ~
PV (W)
6
4
2
0 0 3 6 IS (mA) 9 12 15
Figure 7-14. Maximum Resistance of R1
100
80
R1max (k)
60 VM = 230 V ~ 40
20
0 0 2 4 IS (mA) 6 8 10
14
U2010B
4766B-INDCO-10/05
230 V ~ 18 k/2 W R1 470 k C1 22 F VS 13 12 10 GND 11 Overload Limiting detector High load Voltage detector Mains voltage compensation Supply voltage 1 M R9 15 14 max max R2 330 k Load R8 LED
D1
D3
4766B-INDCO-10/05
Figure 7-15. Application Circuit
L
Automatic retriggering 100% 70% Output
A max 9 S1 C I max R 12 220 k
Current detector 1 2 Full wave rectifier
Phase control unit + = f(V4)
Programmable overload protection
B Autostart
A B C
R3 16 180
Voltage monitoring 1 Level shift
U2010B
R4 3.3 k 2 3 4 5 Load current detector
Soft start 6 7
Reference voltage 8
T1
D2 C5 0.1 F 0.15 F C4 C2 R 11 1 M Overload threshold R 14 R 10 100 k R7 8.2 k 4.7 F 1N4148
R6 C3 10 nF 3.3 k
^ V (R6) = 250 mV R5
C7 1 F P1 50 k Set point Load current compensation R 13 100 k
C6 1 F
N
U2010B
15
8. Ordering Information
Extended Type Number U2010B-xY U2010B-xFPY U2010B-xFPG3Y Package DIP16 SO16 SO16 Remarks Tube, Pb-free Tube, Pb-free Taped and reeled, Pb-free
9. Package Information
Package DIP16
Dimensions in mm
20.0 max 7.82 7.42
4.8 max 6.4 max 0.5 min 3.3 1.64 1.44 Alternative 16 0.58 0.48 17.78 9 0.39 max 9.75 8.15
2.54
technical drawings according to DIN specifications
1
8
16
U2010B
4766B-INDCO-10/05
U2010B
Package SO16
Dimensions in mm
10.0 9.85 5.2 4.8 3.7
1.4 0.4 1.27 8.89 16 9 0.25 0.10 0.2 3.8 6.15 5.85
technical drawings according to DIN specifications
1
8
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. 4766B-INDCO-08/05 History * Put datasheet in a new template * First page: Pb-free logo added * Page 16: Ordering Information changed
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4766B-INDCO-10/05

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