Drive circuit for switch in switched mode power supply has first component group supplied with operating voltage via first input terminal and second component group supplied via supply connection

摘要

The circuit has a first input terminal for feeding a control signal (S2), a supply connection for applying a supply voltage (Vcc), an output terminal for providing a drive signal (S3) and at least two groups (22,30) of circuit components, each with at least two circuit components, whereby the components are coupled together and produce the drive signal from the control signal. The first group is supplied via the first input terminal (K1) and the second via the supply connection (K2) .