U2350B-FP

U2350B-FP PWM Speed Control for Permanent Excited DC Motors Description The monolithic integrated bipolar circuit U2350B is a MOSFET or IGBT - control circuit which works on the principle of pulse width modulation (PWM). The overall concept enables the construction of a power controller with mains voltage compensation where intermittent operation is also possible. In addition, the circuit also enables mains-voltage compensated current control, which maintains the power supplied at a constant level after the preset threshold has been exceeded. Features D D D D D D D D Pulse width control up to 30 kHz clock frequency Mains supply compensation Current regulation Temperature monitoring with indicator Active operation indicator Blink-warn indicator Switchable to interval operation Push-pull output stage for separate supply Package: SO16 D Supply voltage monitoring D Temperature compensated supply voltage limitation Applications D Domestic equipment D Tools Block Diagram 2 LED control 1 +VS 16 GND Voltage limitation 12 Push– pull output 15 14 13 8 6 7 Oscillator 4 Temperature monitoring Output control PWM Control 10 9 5 Tristate Program logic Current limitation 11 95 10873 Figure 1. Block diagram TELEFUNKEN Semiconductors Rev. A1, 29-May-96 1 (9) U2350B-FP 2 (9) R1 VM = 230 V~ 56 k W/ 2W +VS D3 red 2 LED – logic IGBT 14 T1 3 420 mV + – 100% 4 GND 12 Multi Stop Normal Progr.– logic Comparator 2 – + R 11 6 Voltage monitoring Oscillator 1.2 V/ 1.5 V 10 S1 R9 120 k W ...