DESCRIPTION
The integrated circuit, T2117, is designed as a zerovoltage switch in bipolar technology. It is used to control resistive loads at mains by a triac in zero-crossing mode. A ramp generator allows power control function by period group control, whereas full-wave logic guarantees that full mains cycles are used for load switching. FEATURES
D Direct supply from the mains D Current consumption ≤ 0.5 mA D Very few external components D Full-wave drive – no DC current component in the load circuit D Negative output current pulse typ. 100 mA – short-circuit protected D Simple power control D Ramp generator D Reference voltage APPLICATIONS
D Full-wave power control D Temperature regulation D Power blinking switch Block Diagram D1 220 kW (250 V~) R2 (Rsync) R1 BYT41M 18 kW/ 2W –VS 2 1 R5 12 kW max 100 kW min R6 18 kW 3 4 + + – Comparator 6 Full-wave logic Pulse amplifier R3 Ramp generator 8 Synchronization 5 7 Supply GND C1 100 mF/ 16 V TIC 236N 100 W VM = 230 V~ MT2 MT1 Load 1000 W L DataSheet4U.com C2 2.2 mF/ 10 V R4 100 kW DataShee Reference voltage 1.4 V T2117 N Figure 1.
Atmel
