Maker : TEMIC Semiconductors
Part No. : U2010B

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Product Information

U2010B Phase Control Circuit for Current Feedback Description The U2010B is designed as a phase-control circuit in bipolar technology. It enables load-current detection and has a soft-start function as well as reference voltage output. Motor control with load-current feedback and overload protection are preferred applications. Features D Full wave current sensing D Mains supply variation compensated D Programmable load-current limitation with over- and high-load output D Internal supply voltage monitoring D Current requirement 3 mA D Temperature compensated reference voltage v D Variable soft-start D Voltage and current synchronization D Automatic retriggering switchable D Triggering pulse typical 125 mA Package: DIP16, SO16 Applications D Advanced motor control D Grinder D Drilling machine Block Diagram 96 11646 15 Limiting detector Voltage detector 14 Overload Mains voltage compensation 13 12 11 Supply voltage 10 GND High load Automatic retriggering Output Current detector 16 Pulse output 1 Load current detector 100% 70% amax A 9 Phase control unit ö = f (V4) – 1 2 + Full wave rectifier B Programmable Auto– start overload protection C Imax Voltage monitoring Level shift Soft start 4 5 Figure 1. Block diagram 6 7 Reference voltage 8 2 3 TELEFUNKEN Semiconductors Rev. A1, 28-May-96 1 (12) Mains Supply U2010B General Description 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. 2 (12) 230 V ~ R1 R2 330 k W VS 13 Overload Limiting detector High load Voltage detector Mains voltage compensation Supply voltage 10 GND 12 11 C1 22 m F Load 15 14 BYT51K R8 470 k W LED 18 k W /2 W D1 D3 * a max Automatic retriggering 100% Output TIC 226 R3 16 Voltage monitoring 1 Level shift 3 4 5 6 Load current detector 2 R6 R5 3.3 kW ^ V(R6)= 180W R4 3.3 kW Full wave rectifier Current detector 1 2 70% a max A 9 Mode Figure 2. Block diagram with external circuit * – + Phase control unit = f (V4 ) ö Programmable overload protection B Auto– start C Imax A B C S1 v $250 mV C3 10 nF R10 0.15 C4 100 kW Load current compensation Soft start 7 Reference voltage 8 96 11647 v w C5 0.1 m F mF R11 1 MW C2 4.7 m F Overload threshold P1 50 kW Set point R7 8.2 kW In the case of V6 (70% of overload threshold voltage), Pins 11 and 12 are connected internally whereby VT70, the supply current Vsat 1.2 V. When V6 flows across D3. TELEFUNKEN Semiconductors Rev. A1, 28-May-96 C7 1 mF U2010B Pin Description Isense Isense Cö Control Comp. ILoad Csoft VRef 1 2 3 4 5 6 7 8 95 11406 16 Output 15 VSync. 14 VRö 13 Overload 12 High load 11 VS 10 GND 9 Mode Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol Isense Isense Cö Control Comp. ILoad Csoft VRef Mode GND VS High load Overload VRö 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 Series resistance R1 can be calculated as follows: R 1max Vmains VSmax Itot ISmax Ix + Mains supply voltage + Maximum supply voltage + Total current consumption = I )I + Maximum current consumption of the IC + Current consumption of the Smax x +V mains 2 – V Smax whereas I tot ramp is determined by Cö and its charging current Iö. The charging current can be varied using Rö at Pin 14. The maximum phase angle, αmax, can also be adjusted by using Rö (minimum current flow angle ömin) see figure 4. 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 Cö (tp = 9 ms/nF). At the same time, a latch is set with the output pulse, as long as the automatic retriggering has not been activated, then no more pulses can be generated in that h...

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