UAA145 Datasheet | TEMIC Semiconductors

Phase Control Circuit for Industrial Applications Description The UAA145 is a bipolar integrated circuit, designed to provide phase control for industrial applications. It permits the number of ponents in thyristor drive circuits to be drastically reduced. The versatility of the device is further enhanced by the provision of a large number of pins giving access to internal circuit points. Features D Separate pulse output synchronized by mains half wave Applications D Output pulse-width is freely adjustable D Phase angle variable from >0° to <180° D High-impedance phase shift input D Less than 3° pulse symmetry between two half-cycles or phase of different integrated circuits D Industrial power control D Silicon controlled rectifier Package: DIP16 (special case) Block Diagram 9 om po ne D Output pulse blocking nt s Pulse inhibit Puls generator 11 Voltage synchronisation Gm b H 16 Channel selection Pos. / Neg. half wave 2 PHW 10 Ad ro nic C Ramp generator 7 parator S R Memory 14 NHW - V Ref 15 Supply +15 - 15 95 11298 PHW = Positive half wave NHW = Negative half wave Figure 1. Block diagram TELEFUNKEN Semiconductors Rev. A1, 29-May-96 1...