U2010B-MFP

U2010B-MFP ATMEL | Alldatasheet

Document overview

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Technical content

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 /g163 3 mA  Temperature-compensated Reference Voltage

Applications

 Advanced Motor Control  Grinder  Drilling Machine

Description

The U2010B is designed as a phase-control ci rcuit 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. Block Diagram

2 U2010B

Figure 2. Block Diagram with External Circuit D1 and R1. Supply voltage – between pin 10 and pin 11 – is smoothed by C 1.

15 Phase

230 V ~

3 LED V

Figure 3. Pinning DIP16/SO16

1 ISENSE Load current sensing

2 ISENSE Load current sensing

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 Ground

11 VS Supply voltage

12 HIGH LOAD High load indication

13 OVERLOAD Overload indication

14 VR /g106 Ramp current adjust

15 VSYNC Voltage synchronization

16 OUTPUT Trigger output

4 U2010B

4766A–INDCO–01/04 The series resistance R1 can be calculated as follows: where: 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 opti- mum run-up time. 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 V 3, 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 /g106 and its charging current I /g106. The charging current can be varied using R/g106 at pin 14. The maximum phase angle, /g97max, can also be adjusted by using R/g106 (minimum current flow angle /g106min), see Figure 5 on page 10. When the potential on pin 3 reaches the set point level of pin 4, a trigger pulse width, t p, is determined from the value of C /g106 (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 V 8 to -1 V. When V 4 = V8, then the phase angle is at its maximum, /g97max, i.e., the current flow angle is minimum. The mini- mum phase angle, /g97min, is set with V4 /g179 -1 V. 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 commu- tator motors, owing to brush lifters), the automatic retriggering circuit ensures immediate retriggering, if necessary with a high repetition rate, t pp/tp, until the triac remains reliably triggered. R1max Vmains VSmax–

– Monitoring the current flow after triggering. triggering is activated until the triggering is successful. – Avoiding triggering due to an inductive load. polarity to the actual supply voltage. Figure 4. Suppression of Mains Voltage Compensation and Retrigger Automatic functions can be suppressed by limiting /g189V15 - 10/g189 /g163 7 V, see Figure 4. The circuit continuously measures the load cu rrent as a voltage drop at resistance R 6. pensation, see Figure 2 on page 2.

6 U2010B

4766A–INDCO–01/04 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 /g97, 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. Load-current Limitation The total output load current is available at pin 6. It results in a voltage drop across R 11. When the potential of the load current reaches about 70% of the threshold value (V T70), 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 (= V T100), it switches the overload com- parator. The result is programmable at pin 9 (operation mode). Mode Selection a) /g97max (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 /g97max. 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, /g97max, by connecting a further resistance between pins 13 and 14. b) Auto start (pin 9 – open), see Figure 12 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 (V T25), the circuit becomes active again with soft start. c) I max (V9 = V8), see Figure 14 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/g87) without the soft-start capacitor discharging at pin 7. With this mode of operation, direct load-current control (I max) is possible.

4766A–INDCO–01/04 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 Sink current t /g163 10 µs 11 -I S 30 mA 11 -i s 100 mA Synchronous currents t /g163 10 µs 15 ±I syncV 5m A 15 ±i syncV 5m A Phase Control Control voltage 4, 8 -V I 0 - V8 V Input current 4 ±I I 500 µA Charging current 14 -I j†max 0.5 mA Soft Start Input voltage 7, 8 -V I 0 - V8 V Pulse Output Input voltage 16 +VI -VI V11 V V Reference Voltage Source Output current t /g163 10 µs 8I 0 10 mA 8I 0 30 mA Load-current Sensing Input currents 1, 2 ±I i 1m A Input voltages 5, 6 - Vi 0 - V8 V Overload output 13 I L 1m A High-load output t /g163 10 µs

12 I L 30 mA

12 I L 100 mA

Storage temperature range T stg -40 to +125 °C Junction temperature range T j 125 °C Ambient temperature range T amb -10 to +100 °C Thermal Resistance Parameters Symbol Value Unit Junction ambient DIP16 SO16 on p.c. SO16 on ceramic RthJA RthJA RthJA 120 180 100 K/W K/W K/W

8 U2010B

4766A–INDCO–01/04

Electrical Characteristics

Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Supply 11 Supply-voltage limitation -IS = 3.5 mA -IS = 30 mA -VS -VS 14.5 14.6 16.5 16.8 V V Current requirement -V S = 13.0 V 1, 2, 8 and 15 open -IS 3.6 mA Reference Voltage Source 8 Reference voltage IL = 10 µA IL = 2.5 mA -VRef -VRef 8.6 8.4 8.9 8.8 9.2 9.1 V V Temperature coefficient IS = 2.5 mA IS = 10 µA TCVRef TCVRef -0.004 +0.006 %/K %/K Voltage Monitoring 11 Turn-on threshold -V Son 11.3 12.3 V Phase Control Synchronization 15 Input current Voltage sync. ±I syncV 0.15 2 mA Voltage limitation ±I L = 2 mA ±V syncV 8.0 8.5 9.0 V Input current Current synchronization 16 ±I syncI 33 0 µ A Reference Ramp, see Figure 5 on page 10 Charging current 14 -I /g106 1 100 µA Start voltage 3 -V max 1.85 1.95 2.05 V Temperature coefficient of start voltage 3T C R -0.003 %/K Final voltage 3 -V min (V8 ± 200 mV) R/g106 - reference voltage I /g106 = 10 µA 11, 14 V R/g106 0.96 1.02 1.10 V Temperature coefficient I/g106 = 10 µA I/g106 = 1 µA 14 TCVR/g106 TCVR/g106 0.03 0.06 %/K %/K Pulse output current V16 = -1.2 V, Figure 6 on page 10 16 I 0 100 125 150 mA Output pulse width VS = Vlimit C3 = 3.3 nF , see Figure 7 on page 11 16 t p 30 µs Automatic Retriggering Repetition rate I 15 /g179 150 µA t pp 35 7 . 5 t p Threshold voltage 16 ±V I 20 60 mV Soft Start, see Figure 8 on page 11 and Figure 9 on page 11 7 Starting current V 7 = V8 -I0 51 0 1 5 µ A Final current V 7-10 = -1V -I 0 15 25 40 µA Discharge current +I 0 0.5 mA Output current 4 +I 0 0.2 2 mA Mains Voltage Comensation see Figure 10 on page 12 15 Transfer gain I 15/I5 (1 and 2 open) Gi 14 17 20 Output offset current V (R6) = V15 = V5 = 0 ±I 0 2µ A

10 U2010B

Figure 5. Ramp Control Figure 6. Pulse Output

12 U2010B

Figure 10. Mains Voltage Compensation Figure 11. Load-current Detection Figure 12. Restart Switching Auto Start Mode

14 U2010B

Figure 16. Power Dissipation of R1 Figure 17. Power Dissipation of R1 According to Current Consumption Figure 18. Maximum Resistance of R1

Figure 19. Application Circuit

16 U2010B

4766A–INDCO–01/04

Package Information

Ordering Information

Extended Type Number Package Remarks U2010B-x DIP16 Tube U2010B-xFP SO16 Tube U2010B-xFPG3 SO16 Taped and reeled Dimensions in mm 0.5 min 1.64 1.44 technical drawings according to DIN specifications 20.0 max 4.8 max 3.3 7.82 7.42 6.4 max 0.39 max 9.75 8.150.58 0.48 2.54 17.78Alternative 16 9

4766A–INDCO–01/04 technical drawings according to DIN specifications Dimensions in mm 10.0 9.85 8.89 0.4 1.27 1.4 0.25 0.10 5.2 4.8 3.7 3.8 6.15 5.85 0.2 16 9

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