U217B Datasheet (Atmel) - Zero-Voltage Switch

U217B, Zero-Voltage Switch

The integrated circuit, U217B, 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 cycle

U217B 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 volt